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Jayaram L, King PT, Hunt J, Lim M, Park C, Hu E, Dousha L, Ha P, Bartlett JB, Southcott AM, Muruganandan S, Vogrin S, Rees MA, Dean OM, Wong CA. Evaluation of high dose N- Acetylcysteine on airway inflammation and quality of life outcomes in adults with bronchiectasis: A randomised placebo-controlled pilot study. Pulm Pharmacol Ther 2024; 84:102283. [PMID: 38141851 DOI: 10.1016/j.pupt.2023.102283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 11/09/2023] [Accepted: 12/11/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND High dose N acetylcysteine (NAC), a mucolytic, anti-inflammatory and antioxidant agent has been shown to significantly reduce exacerbations, and improve quality of life in placebo controlled, double blind randomised (RCT) studies in patients with COPD, and in an open, randomised study in bronchiectasis. In this pilot, randomised, double-blind, placebo-controlled study, we wished to investigate the feasibility of a larger clinical trial, and the anti-inflammatory and clinical benefits of high dose NAC in bronchiectasis. AIMS Primary outcome: to assess the efficacy of NAC 2400 mg/day at 6 weeks on sputum neutrophil elastase (NE), a surrogate marker for exacerbations. Secondary aims included assessing the efficacy of NAC on sputum MUC5B, IL-8, lung function, quality of life, and adverse effects. METHODS Participants were randomised to receive 2400 mg or placebo for 6 weeks. They underwent 3 visits: at baseline, week 3 and week 6 where clinical and sputum measurements were assessed. RESULTS The study was stopped early due to the COVID pandemic. In total 24/30 patients were recruited, of which 17 completed all aspects of the study. Given this, a per protocol analysis was undertaken: NAC (n = 9) vs placebo (n = 8): mean age 72 vs 62 years; male gender: 44% vs 50%; baseline median FEV11.56 L (mean 71.5 % predicted) vs 2.29L (mean 82.2% predicted). At 6 weeks, sputum NE fell by 47% in the NAC group relative to placebo (mean fold difference (95%CI: 0.53 (0.12,2.42); MUC5B increased by 48% with NAC compared with placebo. Lung function, FVC improved significantly with NAC compared with placebo at 6 weeks (mean fold difference (95%CI): 1.10 (1.00, 1.20), p = 0.045. Bronchiectasis Quality of life measures within the respiratory and social functioning domains demonstrated clinically meaningful improvements, with social functioning reaching statistical significance. Adverse effects were similar in both groups. CONCLUSION High dose NAC exhibits anti-inflammatory benefits, and improvements in aspects of quality of life and lung function measures. It is safe and well tolerated. Further larger placebo controlled RCT's are now warranted examining its role in reducing exacerbations.
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Affiliation(s)
- L Jayaram
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia; University of Melbourne, Parkville, VIC, 3010, Australia.
| | - P T King
- Monash Medical Centre, Clayton Road, Clayton, VIC, 3068, Australia; Monash University, Wellington Road, Clayton, VIC, 3068, Australia
| | - J Hunt
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia
| | - M Lim
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia
| | - C Park
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia
| | - E Hu
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia
| | - L Dousha
- Monash Medical Centre, Clayton Road, Clayton, VIC, 3068, Australia; Monash University, Wellington Road, Clayton, VIC, 3068, Australia
| | - P Ha
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia
| | - J B Bartlett
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia; University of Melbourne, Parkville, VIC, 3010, Australia
| | - A M Southcott
- Western Health, Gordon Street, Footscray, VIC, 3011, Australia; University of Melbourne, Parkville, VIC, 3010, Australia
| | - S Muruganandan
- University of Melbourne, Parkville, VIC, 3010, Australia; Northern Health, Epping, VIC, 3076 Australia
| | - S Vogrin
- University of Melbourne, Parkville, VIC, 3010, Australia
| | - M A Rees
- University of Melbourne, Parkville, VIC, 3010, Australia; Royal Melbourne Hospital, Gratten St, VIC, 3050, Australia
| | - O M Dean
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, 3220 Australia; Florey Institute for Neuroscience and Mental Health and the Department of Psychiatry, The University of Melbourne, VIC , 3010, Australia
| | - C A Wong
- Middlemore Hospital, Te Whatu Ora, Otahuhu, Auckland, 1025, New Zealand; University of Auckland, Park Road, Auckland, 1010, New Zealand
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Sheth RT, Ibrahim DY, Gohara AF, Ekwenna O, Rees MA, Malhotra D, Gunning WT. Concomitant Polyoma BK Virus and West Nile Virus in Renal Allografts. Pathogens 2023; 12:1456. [PMID: 38133339 PMCID: PMC10748228 DOI: 10.3390/pathogens12121456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Surveillance of the renal allograft recipient is essential when monitoring renal function to detect the early onset of rejection and alter therapeutic treatments to treat acute rejection or other causes and improve long-term graft function. If renal function begins to deteriorate, a renal biopsy is often indicated to assess the Banff grade of potential rejection or other causes, especially in the setting of polyoma BK viral load elevation. Although BK infection in the allograft is asymptomatic, reactivation of the virus is known to be associated with the acceleration of pathologic change and a poor outcome in the allograft. BK reactivation in a transplant kidney is not uncommon, and determining inflammation related to the virus versus acute rejection is paramount for appropriate immunosuppressive therapy management. We identified a concomitant polyoma BK virus and West Nile Virus (WNV) infection in two renal transplant patients which, to our knowledge, has not previously been reported. However, other concomitant infections have been reported in renal allografts including BK virus and cytomegalovirus (CMV), CMV and hepatitis C (HCV), and HCV and human immunodeficiency virus (HIV). As WNV has become endemic in many regions of the United States, and since the transmission of the virus via transplanted organs is associated with significant morbidity and mortality, it may be prudent to consider serologic screening for WNV in living donors prior to organ procurement. Regardless, the observation we made and report here should underscore the potential for concomitant viral infections that may be masked when a renal allograft has a significant inflammatory response to BK virus.
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Affiliation(s)
- Riddhish T. Sheth
- Department of Pathology, University of Toledo, Toledo, OH 43614, USA; (R.T.S.); (D.Y.I.); (A.F.G.)
| | - Dalia Y. Ibrahim
- Department of Pathology, University of Toledo, Toledo, OH 43614, USA; (R.T.S.); (D.Y.I.); (A.F.G.)
| | - Amira F. Gohara
- Department of Pathology, University of Toledo, Toledo, OH 43614, USA; (R.T.S.); (D.Y.I.); (A.F.G.)
| | - Obi Ekwenna
- Department of Urology, University of Toledo, Toledo, OH 43614, USA; (O.E.); (M.A.R.)
| | - Michael A. Rees
- Department of Urology, University of Toledo, Toledo, OH 43614, USA; (O.E.); (M.A.R.)
| | - Deepak Malhotra
- Department of Medicine, University of Toledo, Toledo, OH 43614, USA;
| | - William T. Gunning
- Department of Pathology, University of Toledo, Toledo, OH 43614, USA; (R.T.S.); (D.Y.I.); (A.F.G.)
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Long JJ, Motter JD, Jackson KR, Chen J, Orandi BJ, Montgomery RA, Stegall MD, Jordan SC, Benedetti E, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Verbesey JE, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Wellen JR, Bozorgzadeh A, Gaber AO, Heher EC, Weng FL, Djamali A, Helderman JH, Concepcion BP, Brayman KL, Oberholzer J, Kozlowski T, Covarrubias K, Massie AB, McAdams-DeMarco MA, Segev DL, Garonzik-Wang JM. Characterizing the risk of human leukocyte antigen-incompatible living donor kidney transplantation in older recipients. Am J Transplant 2023; 23:1980-1989. [PMID: 37748554 PMCID: PMC10767749 DOI: 10.1016/j.ajt.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/26/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
Older compatible living donor kidney transplant (CLDKT) recipients have higher mortality and death-censored graft failure (DCGF) compared to younger recipients. These risks may be amplified in older incompatible living donor kidney transplant (ILDKT) recipients who undergo desensitization and intense immunosuppression. In a 25-center cohort of ILDKT recipients transplanted between September 24, 1997, and December 15, 2016, we compared mortality, DCGF, delayed graft function (DGF), acute rejection (AR), and length of stay (LOS) between 234 older (age ≥60 years) and 1172 younger (age 18-59 years) recipients. To investigate whether the impact of age was different for ILDKT recipients compared to 17 542 CLDKT recipients, we used an interaction term to determine whether the relationship between posttransplant outcomes and transplant type (ILDKT vs CLDKT) was modified by age. Overall, older recipients had higher mortality (hazard ratio: 1.632.072.65, P < .001), lower DCGF (hazard ratio: 0.360.530.77, P = .001), and AR (odds ratio: 0.390.540.74, P < .001), and similar DGF (odds ratio: 0.461.032.33, P = .9) and LOS (incidence rate ratio: 0.880.981.10, P = 0.8) compared to younger recipients. The impact of age on mortality (interaction P = .052), DCGF (interaction P = .7), AR interaction P = .2), DGF (interaction P = .9), and LOS (interaction P = .5) were similar in ILDKT and CLDKT recipients. Age alone should not preclude eligibility for ILDKT.
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Affiliation(s)
- Jane J Long
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Jennifer D Motter
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Kyle R Jackson
- Department of Surgery, Emory University, Atlanta, Georgia, USA
| | - Jennifer Chen
- Department of Surgery, Baylor College of Medicine, Houston, Texas, USA
| | - Babak J Orandi
- Department of Surgery, University of Alabama, Birmingham, Alabama, USA
| | - Robert A Montgomery
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Mark D Stegall
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Stanley C Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, California, USA
| | - Enrico Benedetti
- Department of Surgery, University of Illinois-Chicago, Chicago, Illinois, USA
| | - Ty B Dunn
- Department of Surgery, University of Pennsylvania, Philadelphia, Philadelphia, USA
| | - Lloyd E Ratner
- Department of Surgery, Columbia University Medical Center, New York, New York, USA
| | - Sandip Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, New York, USA
| | - Ronald P Pelletier
- Department of Surgery, Robert Wood Johnson University Hospital, New Brunswick, New Jersey, USA
| | - John P Roberts
- Department of Surgery, University of California-San Francisco, San Francisco, California, USA
| | - Marc L Melcher
- Department of Surgery, Stanford University, Palo Alto, California, USA
| | - Pooja Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, Philadelphia, USA
| | - Debra L Sudan
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Marc P Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jose M El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, Oklahoma, USA
| | - Ron Shapiro
- Recanati/Miller Transplantation Institute, Mount Sinai Hospital, New York, New York, USA
| | - Matthew Cooper
- Medstar Georgetown Transplant Institute, Washington, District of Columbia, USA
| | - Jennifer E Verbesey
- Medstar Georgetown Transplant Institute, Washington, District of Columbia, USA
| | - George S Lipkowitz
- Department of Surgery, Baystate Medical Center Springfield, Massachusetts, Massachusetts, USA
| | - Michael A Rees
- Department of Urology, University of Toledo Medical Center, Toledo, Ohio, USA
| | - Christopher L Marsh
- Department of Surgery, Scripps Clinic and Green Hospital, La Jolla, California, USA
| | | | - David A Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Jason R Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Adel Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, Massachusetts, USA
| | - A Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, Texas, USA
| | - Eliot C Heher
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Francis L Weng
- Renal and Pancreas Transplant Division, Cooperman Barnabas Medical Center, Livingston, New Jersey, USA
| | - Arjang Djamali
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - J Harold Helderman
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Beatrice P Concepcion
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kenneth L Brayman
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Jose Oberholzer
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Tomasz Kozlowski
- Department of Surgery, University of Florida, Gainesville, Florida, USA
| | - Karina Covarrubias
- Department of Surgery, University of California San Diego, San Diego, California, USA
| | - Allan B Massie
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA
| | - Mara A McAdams-DeMarco
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA
| | - Dorry L Segev
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA; Scientific Registry of Transplant Recipients, Minneapolis, Minnesota, USA
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Marino IR, Roth AE, Rees MA. Living Kidney Donor Transplantation and Global Kidney Exchange. EXP CLIN TRANSPLANT 2022; 20:5-9. [DOI: 10.6002/ect.donorsymp.2022.l12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Roth AE, Marino IR, Krawiec KD, Rees MA. Criminal, Legal, and Ethical Kidney Donation and Transplantation: A Conceptual Framework to Enable Innovation. Transpl Int 2022; 35:10551. [PMID: 35874307 PMCID: PMC9306490 DOI: 10.3389/ti.2022.10551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/23/2022] [Indexed: 11/14/2022]
Affiliation(s)
- Alvin E. Roth
- Department of Economics, Stanford University, Stanford, CA, United States
| | - Ignazio R. Marino
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, United States
| | | | - Michael A. Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH, United States
- Alliance for Paired Kidney Donation, Toledo, OH, United States
- *Correspondence: Michael A. Rees,
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Wang W, Leichtman AB, Rees MA, Song PXK, Ashby VB, Shearon T, Kalbfleisch JD. Kidney Paired Donation Chains Initiated by Deceased Donors. Kidney Int Rep 2022; 7:1278-1288. [PMID: 35685310 PMCID: PMC9171627 DOI: 10.1016/j.ekir.2022.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/01/2022] [Accepted: 03/21/2022] [Indexed: 11/08/2022] Open
Abstract
Introduction Rather than generating 1 transplant by directly donating to a candidate on the waitlist, deceased donors (DDs) could achieve additional transplants by donating to a candidate in a kidney paired donation (KPD) pool, thereby, initiating a chain that ends with a living donor (LD) donating to a candidate on the waitlist. We model outcomes arising from various strategies that allow DDs to initiate KPD chains. Methods We base simulations on actual 2016 to 2017 US DD and waitlist data and use simulated KPD pools to model DD-initiated KPD chains. We also consider methods to assess and overcome the primary criticism of this approach, namely the potential to disadvantage blood type O-waitlisted candidates. Results Compared with shorter DD-initiated KPD chains, longer chains increase the number of KPD transplants by up to 5% and reduce the number of DDs allocated to the KPD pool by 25%. These strategies increase the overall number of blood type O transplants and make LDs available to candidates on the waitlist. Restricting allocation of blood type O DDs to require ending KPD chains with LD blood type O donations to the waitlist markedly reduces the number of KPD transplants achieved. Conclusion Allocating fewer than 3% of DD to initiate KPD chains could increase the number of kidney transplants by up to 290 annually. Such use of DDs allows additional transplantation of highly sensitized and blood type O KPD candidates. Collectively, patients of each blood type, including blood type O, would benefit from the proposed strategies.
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Roth AE, Marino IR, Ekwenna O, Dunn TB, Paloyo SR, Tan M, Correa-Rotter R, Kuhr CS, Marsh CL, Ortiz J, Testa G, Sindhwani P, Segev DL, Rogers J, Punch JD, Forbes RC, Zimmerman MA, Ellis MJ, Rege A, Basagoitia L, Krawiec KD, Rees MA. Global kidney exchange should expand wisely. Transpl Int 2021; 33:985-988. [PMID: 32430941 DOI: 10.1111/tri.13656] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 05/13/2020] [Indexed: 12/17/2022]
Affiliation(s)
| | | | | | - Ty B Dunn
- University of Pennsylvania, Philadelphia, PA, USA
| | - Siegfredo R Paloyo
- Philippine General Hospital, University of the Philippines, Manila, Philippines.,St. Luke's Medical Center, Manila, Philippines
| | | | - Ricardo Correa-Rotter
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | | | | | | | | | | | - Jeffrey Rogers
- Wake Forest Baptist Medical Center, Winston-Salem, NC, USA
| | | | | | | | | | - Aparna Rege
- Duke University Medical Center, Durham, NC, USA
| | - Laura Basagoitia
- General Regional Hospital No 1, Dr. Carlos Macgregor Sánchez Navarro, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Michael A Rees
- University of Toledo, Toledo, OH, USA.,Alliance for Paired Kidney Donation, Perrysburg, OH, USA
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Motter JD, Jackson KR, Long JJ, Waldram MM, Orandi BJ, Montgomery RA, Stegall MD, Jordan SC, Benedetti E, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Verbesey JE, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Wellen JR, Bozorgzadeh A, Gaber AO, Heher EC, Weng FL, Djamali A, Helderman JH, Concepcion BP, Brayman KL, Oberholzer J, Kozlowski T, Covarrubias K, Massie AB, Segev DL, Garonzik-Wang JM. Delayed graft function and acute rejection following HLA-incompatible living donor kidney transplantation. Am J Transplant 2021; 21:1612-1621. [PMID: 33370502 PMCID: PMC8016719 DOI: 10.1111/ajt.16471] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 11/17/2020] [Accepted: 12/08/2020] [Indexed: 02/05/2023]
Abstract
Incompatible living donor kidney transplant recipients (ILDKTr) have pre-existing donor-specific antibody (DSA) that, despite desensitization, may persist or reappear with resulting consequences, including delayed graft function (DGF) and acute rejection (AR). To quantify the risk of DGF and AR in ILDKT and downstream effects, we compared 1406 ILDKTr to 17 542 compatible LDKT recipients (CLDKTr) using a 25-center cohort with novel SRTR linkage. We characterized DSA strength as positive Luminex, negative flow crossmatch (PLNF); positive flow, negative cytotoxic crossmatch (PFNC); or positive cytotoxic crossmatch (PCC). DGF occurred in 3.1% of CLDKT, 3.5% of PLNF, 5.7% of PFNC, and 7.6% of PCC recipients, which translated to higher DGF for PCC recipients (aOR = 1.03 1.682.72 ). However, the impact of DGF on mortality and DCGF risk was no higher for ILDKT than CLDKT (p interaction > .1). AR developed in 8.4% of CLDKT, 18.2% of PLNF, 21.3% of PFNC, and 21.7% of PCC recipients, which translated to higher AR (aOR PLNF = 1.45 2.093.02 ; PFNC = 1.67 2.403.46 ; PCC = 1.48 2.243.37 ). Although the impact of AR on mortality was no higher for ILDKT than CLDKT (p interaction = .1), its impact on DCGF risk was less consequential for ILDKT (aHR = 1.34 1.621.95 ) than CLDKT (aHR = 1.96 2.292.67 ) (p interaction = .004). Providers should consider these risks during preoperative counseling, and strategies to mitigate them should be considered.
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Affiliation(s)
- Jennifer D. Motter
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Kyle R. Jackson
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jane J. Long
- Department of Surgery, Mayo Clinic, Rochester, MN
| | - Madeleine M. Waldram
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Babak J. Orandi
- Department of Surgery, University of Alabama, Birmingham, AL
| | - Robert A. Montgomery
- The NYU Transplant Institute, New York University Langone Medical Center, New York, NY
| | | | - Stanley C. Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, CA
| | - Enrico Benedetti
- Department of Surgery, University of Illinois-Chicago, Chicago, IL
| | - Ty B. Dunn
- Department of Surgery, University of Pennsylvania, Philadelphia, PA
| | - Lloyd E. Ratner
- Department of Surgery, Columbia University Medical Center, New York, NY
| | - Sandip Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, NY
| | - Ronald P. Pelletier
- Department of Surgery, Robert Wood Johnson University Hospital, New Brunswick, NJ
| | - John P. Roberts
- Department of Surgery, University of California-San Francisco, San Francisco, CA
| | | | - Pooja Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia. PA
| | - Debra L. Sudan
- Department of Surgery, Duke University Medical Center, Durham, NC
| | - Marc P. Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, VA
| | - Jose M. El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, OK
| | - Ron Shapiro
- Recanti Miller Transplantation Institute, Mount Sinai Hospital, New York, NY
| | | | | | | | - Michael A. Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH
| | | | | | - David A. Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Jason R. Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, MO
| | - Adel Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, MA
| | - A. Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Eliot C. Heher
- Department of Medicine, Massachusetts General Hospital, Boston, MA
| | - Francis L. Weng
- Renal and Pancreas Transplant Division, Saint Barnabas Medical Center, Livingston, NJ
| | - Arjang Djamali
- Department of Medicine, University of Wisconsin, Madison, WI
| | | | | | | | - Jose Oberholzer
- Department of Surgery, University of Virginia, Charlottesville, VA
| | | | - Karina Covarrubias
- Department of Surgery, University of California San Diego, San Diego, CA
| | - Allan B. Massie
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Dorry L. Segev
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD
- Scientific Registry of Transplant Recipients, Minneapolis, MN
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9
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Kute VB, Patel HV, Modi PR, Rizvi SJ, Shah PR, Engineer DP, Banerjee S, Meshram HS, Butala BP, Modi MP, Gandhi S, Patel AH, Mishra VV, Roth AE, Kopke JE, Rees MA. Non-simultaneous kidney exchange cycles in resource-restricted countries without non-directed donation - a prospective single-center cohort study. Transpl Int 2021; 34:669-680. [PMID: 33527555 DOI: 10.1111/tri.13833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/31/2020] [Accepted: 01/25/2021] [Indexed: 12/20/2022]
Abstract
Recent reports suggest that bridge-donor reneging is rare (1.5%) in non-simultaneous kidney exchange chains. However, in developing countries, the non-directed donors who would be needed to initiate chains are unavailable, and furthermore, limited surgical space and resources restrain the feasibility of simultaneous kidney exchange cycles. Therefore, the aim of this study was to evaluate the bridge-donor reneging rate during non-simultaneous kidney exchange cycles (NSKEC) in a prospective single-center cohort study (n = 67). We describe the protocol used to prepare co-registered donor-recipient pairs for non-simultaneous surgeries, in an effort to minimize the reneging rate. In addition, in order to protect any recipients who might be left vulnerable by this arrangement, we proposed the use of standard criteria deceased-donor kidneys to rectify the injustice in the event of any bridge-donor reneging. We report 17 successful NSKEC resulting in 67 living-donor kidney transplants (LDKT) using 23 bridge-donors without donor renege and no intervening pairs became unavailable. We propose that NSKEC could increase LDKT, especially for difficult-to-match sensitized pairs (25 of our 67 pairs) in countries with limited transplantation resources. Our study confirms that NSKEC can be safely performed with careful patient-donor selection and non-anonymous kidney exchanges.
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Affiliation(s)
- Vivek B Kute
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Himanshu V Patel
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Pranjal R Modi
- Department of Urology and Transplantation, IKDRC-ITS, Ahmedabad, India
| | - Syed J Rizvi
- Department of Urology and Transplantation, IKDRC-ITS, Ahmedabad, India
| | - Pankaj R Shah
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Divyesh P Engineer
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Subho Banerjee
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Hari Shankar Meshram
- Department of Nephrology and Clinical Transplantation, Institute of Kidney Diseases and Research Center, Dr HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS), Ahmedabad, India
| | - Bina P Butala
- Department of Anesthesia, IKDRC-ITS, Ahmedabad, India
| | | | - Shruti Gandhi
- Department of Radiology, IKDRC-ITS, Ahmedabad, India
| | | | | | | | | | - Michael A Rees
- Alliance for Paired Kidney Donation, Perrysburg, OH, USA.,University of Toledo Medical Center, Toledo, OH, USA
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10
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Jackson KR, Long J, Motter J, Bowring MG, Chen J, Waldram MM, Orandi BJ, Montgomery RA, Stegall MD, Jordan SC, Benedetti E, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Verbesey JE, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Wellen J, Bozorgzadeh A, Gaber AO, Heher E, Weng FL, Djamali A, Helderman JH, Concepcion BP, Brayman KL, Oberholzer J, Kozlowski T, Covarrubias K, Desai N, Massie AB, Segev DL, Garonzik-Wang J. Center-level Variation in HLA-incompatible Living Donor Kidney Transplantation Outcomes. Transplantation 2021; 105:436-442. [PMID: 32235255 PMCID: PMC8080262 DOI: 10.1097/tp.0000000000003254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Desensitization protocols for HLA-incompatible living donor kidney transplantation (ILDKT) vary across centers. The impact of these, as well as other practice variations, on ILDKT outcomes remains unknown. METHODS We sought to quantify center-level variation in mortality and graft loss following ILDKT using a 25-center cohort of 1358 ILDKT recipients with linkage to Scientific Registry of Transplant Recipients for accurate outcome ascertainment. We used multilevel Cox regression with shared frailty to determine the variation in post-ILDKT outcomes attributable to between-center differences and to identify any center-level characteristics associated with improved post-ILDKT outcomes. RESULTS After adjusting for patient-level characteristics, only 6 centers (24%) had lower mortality and 1 (4%) had higher mortality than average. Similarly, only 5 centers (20%) had higher graft loss and 2 had lower graft loss than average. Only 4.7% of the differences in mortality (P < 0.01) and 4.4% of the differences in graft loss (P < 0.01) were attributable to between-center variation. These translated to a median hazard ratio of 1.36 for mortality and 1.34 of graft loss for similar candidates at different centers. Post-ILDKT outcomes were not associated with the following center-level characteristics: ILDKT volume and transplanting a higher proportion of highly sensitized, prior transplant, preemptive, or minority candidates. CONCLUSIONS Unlike most aspects of transplantation in which center-level variation and volume impact outcomes, we did not find substantial evidence for this in ILDKT. Our findings support the continued practice of ILDKT across these diverse centers.
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Affiliation(s)
- Kyle R. Jackson
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jane Long
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jennifer Motter
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Mary G Bowring
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jennifer Chen
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Madeleine M. Waldram
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Babak J Orandi
- Department of Surgery, University of Alabama, Birmingham, AL
| | - Robert A. Montgomery
- The NYU Transplant Institute, New York University Langone Medical Center, New York, NY
| | | | - Stanley C. Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, CA
| | - Enrico Benedetti
- Department of Surgery, University of Illinois-Chicago, Chicago, IL
| | - Ty B. Dunn
- Department of Surgery, University of Pennsylvania, Philadelphia, PA
| | - Lloyd E. Ratner
- Department of Surgery, Columbia University Medical Center, New York, NY
| | - Sandip Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, NY
| | - Ronald P. Pelletier
- Department of Surgery, Robert Wood Johnson University Hospital, New Brunswick, NJ
| | - John P. Roberts
- Department of Surgery, University of California-San Francisco, San Francisco, CA
| | | | - Pooja Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia. PA
| | - Debra L. Sudan
- Department of Surgery, Duke University Medical Center, Durham, NC
| | - Marc P. Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, VA
| | - Jose M. El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, OK
| | - Ron Shapiro
- Recanti Miller Transplantation Institute, Mount Sinai Hospital, New York, NY
| | | | | | | | - Michael A. Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH
| | | | | | - David A. Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Jason Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, MO
| | - Adel Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, MA
| | - A. Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Eliot Heher
- Department of Medicine, Massachusetts General Hospital, Boston, MA
| | - Francis L. Weng
- Renal and Pancreas Transplant Division, Saint Barnabas Medical Center, Livingston, NJ
| | - Arjang Djamali
- Department of Medicine, University of Wisconsin, Madison, WI
| | | | | | | | - Jose Oberholzer
- Department of Surgery, University of Virginia, Charlottesville, VA
| | | | - Karina Covarrubias
- Department of Surgery, University of California San Diego, San Diego, CA
| | - Niraj Desai
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Allan B. Massie
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Dorry L. Segev
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD
- Scientific Registry of Transplant Recipients, Minneapolis, MN
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11
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Cronin KM, Rees MA, Tay EL, Hoy RF, Denholm JT. TB in stonemasons in Australia. Int J Tuberc Lung Dis 2020; 24:966-968. [PMID: 33156766 DOI: 10.5588/ijtld.20.0202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- K M Cronin
- Health Protection Branch, Department of Health and Human Services, Melbourne, VIC, Department of Infectious Diseases, Austin Health, Melbourne, VIC
| | - M A Rees
- Department of Respiratory Medicine and Sleep Disorders, Royal Melbourne Hospital, Melbourne, VIC
| | - E L Tay
- Health Protection Branch, Department of Health and Human Services, Melbourne, VIC
| | - R F Hoy
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC
| | - J T Denholm
- The Victorian Tuberculosis Program, Melbourne Health at The Doherty Institute for infection and Immunity, Melbourne, VIC, Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC, Australia ,
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12
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Bray M, Wang W, Rees MA, Song PXK, Leichtman AB, Ashby VB, Kalbfleisch JD. KPDGUI: An interactive application for optimization and management of a virtual kidney paired donation program. Comput Biol Med 2019; 108:345-353. [PMID: 31054501 DOI: 10.1016/j.compbiomed.2019.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND OBJECTIVES The aim in kidney paired donation (KPD) is typically to maximize the number of transplants achieved through the exchange of donors in a pool comprising incompatible donor-candidate pairs and non-directed (or altruistic) donors. With many possible options in a KPD pool at any given time, the most appropriate set of exchanges cannot be determined by simple inspection. In practice, computer algorithms are used to determine the optimal set of exchanges to pursue. Here, we present our software application, KPDGUI (Kidney Paired Donation Graphical User Interface), for management and optimization of KPD programs. METHODS While proprietary software platforms for managing KPD programs exist to provide solutions to the standard KPD problem, our application implements newly investigated optimization criteria that account for uncertainty regarding the viability of selected transplants and arrange for fallback options in cases where potential exchanges cannot proceed, with intuitive resources for visualizing alternative optimization solutions. RESULTS We illustrate the advantage of accounting for uncertainty and arranging for fallback options in KPD using our application through a case study involving real data from a paired donation program, comparing solutions produced under different optimization criteria and algorithmic priorities. CONCLUSIONS KPDGUI is a flexible and powerful tool for offering decision support to clinicians and researchers on possible KPD transplant options to pursue under different user-specified optimization schemes.
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Affiliation(s)
- Mathieu Bray
- University of Michigan, Department of Biostatistics, Ann Arbor, MI, USA; University of Michigan, Kidney Epidemiology and Cost Center, Ann Arbor, MI, USA.
| | - Wen Wang
- University of Michigan, Department of Biostatistics, Ann Arbor, MI, USA; University of Michigan, Kidney Epidemiology and Cost Center, Ann Arbor, MI, USA
| | - Michael A Rees
- University of Toledo Medical Center, Department of Urology, Toledo, OH, USA; Alliance for Paired Donation, Inc., Maumee, OH, USA
| | - Peter X-K Song
- University of Michigan, Department of Biostatistics, Ann Arbor, MI, USA; University of Michigan, Kidney Epidemiology and Cost Center, Ann Arbor, MI, USA
| | | | - Valarie B Ashby
- University of Michigan, Kidney Epidemiology and Cost Center, Ann Arbor, MI, USA
| | - John D Kalbfleisch
- University of Michigan, Department of Biostatistics, Ann Arbor, MI, USA; University of Michigan, Kidney Epidemiology and Cost Center, Ann Arbor, MI, USA
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13
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Stepkowski SM, Mierzejewska B, Fumo D, Bekbolsynov D, Khuder S, Baum CE, Brunner RJ, Kopke JE, Rees SE, Smith C, Ashlagi I, Roth AE, Rees MA. The 6-year clinical outcomes for patients registered in a multiregional United States Kidney Paired Donation program - a retrospective study. Transpl Int 2019; 32:839-853. [PMID: 30848501 DOI: 10.1111/tri.13423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/11/2018] [Accepted: 03/04/2019] [Indexed: 01/10/2023]
Abstract
We examined what happened during a 6-year period to 1121 end-stage renal disease patients who registered with their willing/incompatible living donors for kidney exchanges with the Alliance for Paired Donation (APD). Of all patients, 65% were transplanted: 37% in kidney paired donation (APD-KPD, APD-other-KPD); 10% with compatible live donors (APD-LD); and 18% with deceased donors (APD-DD). The remaining patients were withdrawn (sick/died/others; 15%), or were still waiting (20%). For those patients with a cPRA 0-94%, 72% received a transplant. In contrast, only 49% of very highly sensitized (VHS; cPRA 95-100%) were transplanted. Of the VHS patients, 50% were transplanted by KPD/APD-LD while 50% benefited through prioritization of deceased donors in the modified kidney allocation system (KAS introduced in 2014). All APD transplanted groups had similar death-censored 4-year graft survivals as their relevant Organ Procurement and Transplantation Network (OPTN) groups. It is noteworthy that VHS graft and patient survival results were comparable to less sensitized and nonsensitized patients. All patients should be encouraged to search for compatible donors through different options. Expanding the donor pool through KPD and the new KAS of the OPTN increases the likelihood of transplantation for VHS patients.
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Affiliation(s)
- Stanislaw M Stepkowski
- Department of Medical Microbiology and Immunology, University of Toledo Medical Center, Toledo, OH, USA.,The Alliance for Paired Donation, Maumee, OH, USA
| | - Beata Mierzejewska
- The Alliance for Paired Donation, Maumee, OH, USA.,Department of Urology, University of Toledo Medical Center, Toledo, OH, USA
| | - David Fumo
- Department of Urology, University of Toledo Medical Center, Toledo, OH, USA
| | - Dulat Bekbolsynov
- Department of Medical Microbiology and Immunology, University of Toledo Medical Center, Toledo, OH, USA
| | - Sadik Khuder
- Department of Medical Microbiology and Immunology, University of Toledo Medical Center, Toledo, OH, USA
| | - Caitlin E Baum
- Department of Medical Microbiology and Immunology, University of Toledo Medical Center, Toledo, OH, USA
| | - Robert J Brunner
- Department of Urology, University of Toledo Medical Center, Toledo, OH, USA
| | | | - Susan E Rees
- The Alliance for Paired Donation, Maumee, OH, USA
| | - Connie Smith
- The Alliance for Paired Donation, Maumee, OH, USA
| | - Itai Ashlagi
- Department of Management Science and Engineering, Stanford University, Stanford, CA, USA
| | - Alvin E Roth
- Department of Economics, Stanford University, Stanford, CA, USA
| | - Michael A Rees
- Department of Medical Microbiology and Immunology, University of Toledo Medical Center, Toledo, OH, USA.,The Alliance for Paired Donation, Maumee, OH, USA.,Department of Urology, University of Toledo Medical Center, Toledo, OH, USA
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14
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Raju SA, White WL, Lau MS, Mooney PD, Rees MA, Burden M, Ciacci C, Sanders DS. A comparison study between Magniview and high definition white light endoscopy in detecting villous atrophy and coeliac disease: A single centre pilot study. Dig Liver Dis 2018; 50:920-924. [PMID: 29807874 DOI: 10.1016/j.dld.2018.03.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/28/2018] [Accepted: 03/30/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Coeliac disease may be missed at gastroscopy. We aimed to assess the sensitivity of Pentax optical zoom technology endoscopes in detecting duodenal villous atrophy and the ease of image interpretation by non-coeliac specialists. METHOD All patients attending for a gastroscopy were assessed for endoscopic villous atrophy in part one and two of the duodenum with high definition white light endoscopy and magnification endoscopy. Endoscopic findings of the duodenum were compared to histology as the reference standard. A short training video of varying degrees of villous atrophy seen by magnification endoscopy was used to train individuals. They were then assessed for the ability to differentiate between normal duodenum and villous atrophy. RESULTS Two hundred and fifty patients were prospectively recruited (145 females, 58%; age range 16-84, median age 50.5). Ninety-six patients had villous atrophy on histology (38.4%) 154 were controls. Magnification endoscopy had a higher sensitivity in detecting villous atrophy compared to high definition white light endoscopy (86.4% versus 78.4%, p = .0005). 9/10 individuals undertaking magnification endoscopy training correctly identified all cases of villous atrophy. CONCLUSION Magnification endoscopy has superior diagnostic sensitivity in detecting villous atrophy compared to high definition white light endoscopy and the potential to be easily adopted by all endoscopists.
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Affiliation(s)
- Suneil A Raju
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom.
| | - William L White
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Michelle S Lau
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Peter D Mooney
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Michael A Rees
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Mitchell Burden
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Carolina Ciacci
- Unit of Gastronterology, AOU San Giovannidi Dio e Ruggi D'Aragona, Department of Medicine and Surgery, Scuola Medica Salernitana, University of Salerno, Italy
| | - David S Sanders
- Academic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, United Kingdom
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15
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Ashlagi I, Bingaman A, Burq M, Manshadi V, Gamarnik D, Murphey C, Roth AE, Melcher ML, Rees MA. Effect of match-run frequencies on the number of transplants and waiting times in kidney exchange. Am J Transplant 2018; 18:1177-1186. [PMID: 29087017 DOI: 10.1111/ajt.14566] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/24/2017] [Accepted: 10/16/2017] [Indexed: 01/25/2023]
Abstract
Numerous kidney exchange (kidney paired donation [KPD]) registries in the United States have gradually shifted to high-frequency match-runs, raising the question of whether this harms the number of transplants. We conducted simulations using clinical data from 2 KPD registries-the Alliance for Paired Donation, which runs multihospital exchanges, and Methodist San Antonio, which runs single-center exchanges-to study how the frequency of match-runs impacts the number of transplants and the average waiting times. We simulate the options facing each of the 2 registries by repeated resampling from their historical pools of patient-donor pairs and nondirected donors, with arrival and departure rates corresponding to the historical data. We find that longer intervals between match-runs do not increase the total number of transplants, and that prioritizing highly sensitized patients is more effective than waiting longer between match-runs for transplanting highly sensitized patients. While we do not find that frequent match-runs result in fewer transplanted pairs, we do find that increasing arrival rates of new pairs improves both the fraction of transplanted pairs and waiting times.
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Affiliation(s)
- Itai Ashlagi
- Department of Management Science and Engineering, Stanford University, Stanford, CA, USA
| | - Adam Bingaman
- Texas Transplant Institute, Methodist Specialty and Transplant Hospital, San Antonio, TX, USA
| | | | | | | | - Cathi Murphey
- Southwest Immunodiagnostics Laboratory, San Antonio, TX, USA
| | - Alvin E Roth
- Department of Economics, Stanford University, Stanford, CA, USA
| | - Marc L Melcher
- Department of Surgery, Stanford University, Stanford, CA, USA
| | - Michael A Rees
- University of Toledo, Toledo, OH, USA.,Alliance for Paired Donation, Perrysburg, OH, USA
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16
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Orandi BJ, Luo X, King EA, Garonzik-Wang JM, Bae S, Montgomery RA, Stegall MD, Jordan SC, Oberholzer J, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Nelson PW, Wellen J, Bozorgzadeh A, Gaber AO, Segev DL. Hospital readmissions following HLA-incompatible live donor kidney transplantation: A multi-center study. Am J Transplant 2018; 18:650-658. [PMID: 28834181 PMCID: PMC5820188 DOI: 10.1111/ajt.14472] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 08/06/2017] [Accepted: 08/11/2017] [Indexed: 01/25/2023]
Abstract
Thirty percent of kidney transplant recipients are readmitted in the first month posttransplantation. Those with donor-specific antibody requiring desensitization and incompatible live donor kidney transplantation (ILDKT) constitute a unique subpopulation that might be at higher readmission risk. Drawing on a 22-center cohort, 379 ILDKTs with Medicare primary insurance were matched to compatible transplant-matched controls and to waitlist-only matched controls on panel reactive antibody, age, blood group, renal replacement time, prior kidney transplantation, race, gender, diabetes, and transplant date/waitlisting date. Readmission risk was determined using multilevel, mixed-effects Poisson regression. In the first month, ILDKTs had a 1.28-fold higher readmission risk than compatible controls (95% confidence interval [CI] 1.13-1.46; P < .001). Risk peaked at 6-12 months (relative risk [RR] 1.67, 95% CI 1.49-1.87; P < .001), attenuating by 24-36 months (RR 1.24, 95% CI 1.10-1.40; P < .001). ILDKTs had a 5.86-fold higher readmission risk (95% CI 4.96-6.92; P < .001) in the first month compared to waitlist-only controls. At 12-24 (RR 0.85, 95% CI 0.77-0.95; P = .002) and 24-36 months (RR 0.74, 95% CI 0.66-0.84; P < .001), ILDKTs had a lower risk than waitlist-only controls. These findings of ILDKTs having a higher readmission risk than compatible controls, but a lower readmission risk after the first year than waitlist-only controls should be considered in regulatory/payment schemas and planning clinical care.
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Affiliation(s)
- Babak J. Orandi
- Department of Surgery, University of California-San Francisco, San Francisco, CA
| | - Xun Luo
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Elizabeth A. King
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | | | - Sunjae Bae
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Robert A. Montgomery
- The NYU Transplant Institute, New York University Langone Medical Center, NY, NY
| | | | - Stanley C. Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, CA
| | - Jose Oberholzer
- Department of Surgery, University of Illinois-Chicago, Chicago IL
| | - Ty B. Dunn
- Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Lloyd E. Ratner
- Department of Surgery, Columbia University Medical Center, New York, NY
| | - Sandip Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, NY
| | | | - John P. Roberts
- Department of Surgery, University of California-San Francisco, San Francisco, CA
| | | | - Pooja Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, PA
| | - Debra L. Sudan
- Department of Surgery, Duke University Medical Center, Durham, NC
| | - Marc P. Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, VA
| | - Jose M. El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, OK
| | - Ron Shapiro
- Recanati Miller Transplantation Institute, Mount Sinai Hospital, New York, NY
| | | | | | - Michael A. Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH
| | | | | | - David A. Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Paul W. Nelson
- Department of Surgery, University of Nevada, Las Vegas, NV
| | - Jason Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, MO
| | - Adel Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, MA
| | - A. Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Dorry L. Segev
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
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17
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Bozek DN, Dunn TB, Kuhr CS, Marsh CL, Rogers J, Rees SE, Basagoitia L, Brunner RJ, Roth AE, Ekwenna O, Fumo DE, Krawiec KD, Kopke JE, Sindhwani P, Ortiz J, Tan M, Paloyo SR, Punch JD, Rees MA. Complete Chain of the First Global Kidney Exchange Transplant and 3-yr Follow-up. Eur Urol Focus 2018; 4:190-197. [DOI: 10.1016/j.euf.2018.07.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 07/13/2018] [Indexed: 11/15/2022]
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18
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Kute VB, Agarwal SK, Sahay M, Kumar A, Rathi M, Prasad N, Sharma RK, Gupta KL, Shroff S, Saxena SK, Shah PR, Modi PR, Billa V, Tripathi LK, Raju S, Bhadauria DS, Jeloka TK, Agarwal D, Krishna A, Perumalla R, Jain M, Guleria S, Rees MA. Kidney-Paired Donation to Increase Living Donor Kidney Transplantation in India: Guidelines of Indian Society of Organ Transplantation - 2017. Indian J Nephrol 2018. [PMID: 29515294 PMCID: PMC5830802 DOI: 10.4103/ijn.ijn_365_17] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Vivek B Kute
- Department of Nephrology, Dr. H L Trivedi Institute of Transplantation Sciences, Ahmedabad, Gujarat, India
| | - Sanjay K Agarwal
- Department of Nephrology, All India Institute of Medical Sciences, Artemis Hospital, New Delhi, India
| | - Manisha Sahay
- Department of Nephrology, Osmania General Hospital, Hyderabad, Telangana, India
| | - Anant Kumar
- Department of Transplantation Surgery, Max Group of Hospital, New Delhi, India
| | - Manish Rathi
- Department of Nephrology, The Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Narayan Prasad
- Department of Nephrology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Rajkumar K Sharma
- Department of Nephrology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Krishan L Gupta
- Department of Nephrology, The Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil Shroff
- Department of Transplantation Surgery, Madras Medical Mission Hospital, Chennai, Tamil Nadu, India
| | - Sandip K Saxena
- Department of Nephrology, Apollo Hospital, Indore, Madhya Pradesh, India
| | - Pankaj R Shah
- Department of Nephrology, Dr. H L Trivedi Institute of Transplantation Sciences, Ahmedabad, Gujarat, India
| | - Pranjal R Modi
- Department of Transplantation Surgery Institute of Kidney Diseases and Research Center and Dr. H L Trivedi Institute of Transplantation Sciences, Ahmedabad, Gujarat, India
| | - Vishwanath Billa
- Department of Nephrology, Bombay Hospital and Medical Research Centre, Mumbai, India
| | | | - Sreebhushan Raju
- Department of Nephrology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Dhamedndra S Bhadauria
- Department of Nephrology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Tarun K Jeloka
- Department of Nephrology, Aditya Birla Memorial Hospital, Pune, Maharashtra, India
| | | | - Amresh Krishna
- Department of Nephrology, Indira Gandhi Institute of Medical Science, Patna, Bihar, India
| | - Rajshekhar Perumalla
- Department of Transplantation Surgery, Kauvery Hospital, Chennai, Tamil Nadu, India
| | - Manoj Jain
- Department of Renal Pathology Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sandeep Guleria
- Department of Transplantation Surgery, Indraprastha Apollo Hospital, New Delhi, India
| | - Michael A Rees
- Department of Transplantation Surgery, University of Toledo Medical Center, Toledo, Ohio.,CEO, Alliance for Paired Donation, USA
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Axelrod D, Lentine KL, Schnitzler MA, Luo X, Xiao H, Orandi BJ, Massie A, Garonzik-Wang J, Stegall MD, Jordan SC, Oberholzer J, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Nelson PW, Wellen J, Bozorgzadeh A, Osama Gaber A, Montgomery RA, Segev DL. The Incremental Cost of Incompatible Living Donor Kidney Transplantation: A National Cohort Analysis. Am J Transplant 2017; 17:3123-3130. [PMID: 28613436 DOI: 10.1111/ajt.14392] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 05/04/2017] [Accepted: 05/22/2017] [Indexed: 01/25/2023]
Abstract
Incompatible living donor kidney transplantation (ILDKT) has been established as an effective option for end-stage renal disease patients with willing but HLA-incompatible living donors, reducing mortality and improving quality of life. Depending on antibody titer, ILDKT can require highly resource-intensive procedures, including intravenous immunoglobulin, plasma exchange, and/or cell-depleting antibody treatment, as well as protocol biopsies and donor-specific antibody testing. This study sought to compare the cost and Medicare reimbursement, exclusive of organ acquisition payment, for ILDKT (n = 926) with varying antibody titers to matched compatible transplants (n = 2762) performed between 2002 and 2011. Data were assembled from a national cohort study of ILDKT and a unique data set linking hospital cost accounting data and Medicare claims. ILDKT was more expensive than matched compatible transplantation, ranging from 20% higher adjusted costs for positive on Luminex assay but negative flow cytometric crossmatch, 26% higher for positive flow cytometric crossmatch but negative cytotoxic crossmatch, and 39% higher for positive cytotoxic crossmatch (p < 0.0001 for all). ILDKT was associated with longer median length of stay (12.9 vs. 7.8 days), higher Medicare payments ($91 330 vs. $63 782 p < 0.0001), and greater outlier payments. In conclusion, ILDKT increases the cost of and payments for kidney transplantation.
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Affiliation(s)
- D Axelrod
- Department of Transplantation, Lahey Hospital and Health System, Burlington, MA
| | - K L Lentine
- Center for Abdominal Transplantation, Saint Louis University School of Medicine, St. Louis, MO
| | - M A Schnitzler
- Center for Abdominal Transplantation, Saint Louis University School of Medicine, St. Louis, MO
| | - X Luo
- Division of Abdominal Transplantation, Department of Surgery, Johns Hopkins University, Baltimore, MD
| | - H Xiao
- Center for Abdominal Transplantation, Saint Louis University School of Medicine, St. Louis, MO
| | - B J Orandi
- Division of Transplant Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA
| | - A Massie
- Division of Abdominal Transplantation, Department of Surgery, Johns Hopkins University, Baltimore, MD
| | - J Garonzik-Wang
- Division of Abdominal Transplantation, Department of Surgery, Johns Hopkins University, Baltimore, MD
| | - M D Stegall
- Department of Surgery, Mayo Clinic, Rochester, MN
| | - S C Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, CA
| | - J Oberholzer
- Department of Surgery, University of Illinois-Chicago, Chicago, IL
| | - T B Dunn
- Department of Surgery, University of Minnesota, Minneapolis, MN
| | - L E Ratner
- Department of Surgery, Columbia University Medical Center, New York, NY
| | - S Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, NY
| | - R P Pelletier
- Department of Surgery, The Ohio State University, Columbus, OH
| | - J P Roberts
- Division of Transplant Surgery, Department of Surgery, University of California San Francisco, San Francisco, CA
| | - M L Melcher
- Department of Surgery, Stanford University, Palo Alto, CA
| | - P Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, PA
| | - D L Sudan
- Department of Surgery, Duke University Medical Center, Durham, NC
| | - M P Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, VA
| | - J M El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, OK
| | - R Shapiro
- Department of Surgery, Mt. Sinai Medical Center, New York, NY
| | - M Cooper
- Medstar Georgetown Transplant Institute, Washington, DC
| | - G S Lipkowitz
- Department of Surgery, Baystate Medical Center, Springfield, MA
| | - M A Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH
| | - C L Marsh
- Division of Organ Transplantation, Scripps Center for Organ Transplantation, Department of Surgery, Scripps Clinic and Green Hospital, La Jolla, CA
| | - B R Sankari
- Department of Urology, Cleveland Clinic, Cleveland, OH
| | - D A Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, NC
| | - P W Nelson
- Department of Surgery, University of Nevada, Las Vegas, NV
| | - J Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, MO
| | - A Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, MA
| | - A Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - R A Montgomery
- Department of Surgery, New York University Langone Medical Center, New York, NY
| | - D L Segev
- Division of Abdominal Transplantation, Department of Surgery, Johns Hopkins University, Baltimore, MD
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20
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Rees MA, Paloyo SR, Roth AE, Krawiec KD, Ekwenna O, Marsh CL, Wenig AJ, Dunn TB. Global kidney exchange: Financially incompatible pairs are not transplantable compatible pairs. Am J Transplant 2017; 17:2743-2744. [PMID: 28758331 DOI: 10.1111/ajt.14451] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- M A Rees
- Department of Urology, University of Toledo, Toledo, OH, USA
| | - S R Paloyo
- Department of Surgery, Philippine General Hospital, University of the Philippines, Manila, Philippines
| | - A E Roth
- Department of Economics, Stanford University, Stanford, CA, USA
| | - K D Krawiec
- School of Law, Duke University, Durham, NC, USA
| | - O Ekwenna
- Department of Urology, University of Toledo, Toledo, OH, USA
| | - C L Marsh
- Scripps Clinic, Scripps Center for Organ and Cell Transplant, La Jolla, CA, USA
| | - A J Wenig
- Department of Urology, University of Toledo, Toledo, OH, USA
| | - T B Dunn
- Department of Surgery, University of Minnesota, Minneapolis, MN, USA
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21
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22
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Roth AE, Krawiec KD, Paloyo S, Ekwenna O, Marsh CL, Wenig AJ, Dunn TB, Rees MA. People should not be banned from transplantation only because of their country of origin. Am J Transplant 2017; 17:2747-2748. [PMID: 28862804 DOI: 10.1111/ajt.14485] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Alvin E Roth
- Department of Economics, Stanford University, Stanford, CA, USA
| | | | - Siegfredo Paloyo
- Department of Surgery, Philippine General Hospital, University of the Philippines, Manila, Philippines
| | - Obi Ekwenna
- Department of Urology, University of Toledo, Toledo, OH, USA
| | - Christopher L Marsh
- Scripps Clinic, Scripps Center for Organ and Cell Transplant, La Jolla, CA, USA
| | | | - Ty B Dunn
- Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Michael A Rees
- Department of Urology, University of Toledo, Toledo, OH, USA.,Alliance for Paired Donation, Perrysburg, OH, USA
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23
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Ashby VB, Leichtman AB, Rees MA, Song PXK, Bray M, Wang W, Kalbfleisch JD. A Kidney Graft Survival Calculator that Accounts for Mismatches in Age, Sex, HLA, and Body Size. Clin J Am Soc Nephrol 2017; 12:1148-1160. [PMID: 28596416 PMCID: PMC5498352 DOI: 10.2215/cjn.09330916] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 03/27/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND OBJECTIVES Outcomes for transplants from living unrelated donors are of particular interest in kidney paired donation (KPD) programs where exchanges can be arranged between incompatible donor-recipient pairs or chains created from nondirected/altruistic donors. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Using Scientific Registry of Transplant Recipients data, we analyzed 232,705 recipients of kidney-alone transplants from 1998 to 2012. Graft failure rates were estimated using Cox models for recipients of kidney transplants from living unrelated, living related, and deceased donors. Models were adjusted for year of transplant and donor and recipient characteristics, with particular attention to mismatches in age, sex, human leukocyte antigens (HLA), body size, and weight. RESULTS The dependence of graft failure on increasing donor age was less pronounced for living-donor than for deceased-donor transplants. Male donor-to-male recipient transplants had lower graft failure, particularly better than female to male (5%-13% lower risk). HLA mismatch was important in all donor types. Obesity of both the recipient (8%-18% higher risk) and donor (5%-11% higher risk) was associated with higher graft loss, as were donor-recipient weight ratios of <75%, compared with transplants where both parties were of similar weight (9%-12% higher risk). These models are used to create a calculator of estimated graft survival for living donors. CONCLUSIONS This calculator provides useful information to donors, candidates, and physicians of estimated outcomes and potentially in allowing candidates to choose among several living donors. It may also help inform candidates with compatible donors on the advisability of joining a KPD program.
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Affiliation(s)
- Valarie B. Ashby
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Alan B. Leichtman
- Arbor Research Collaborative for Health, Division of Nephrology, University of Michigan, Ann Arbor, Michigan; and
| | - Michael A. Rees
- Departments of Urology and Pathology, University of Toledo Medical Center, Toledo, Ohio
| | - Peter X.-K. Song
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Mathieu Bray
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Wen Wang
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
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Rees MA, Dunn TB, Kuhr CS, Marsh CL, Rogers J, Rees SE, Cicero A, Reece LJ, Roth AE, Ekwenna O, Fumo DE, Krawiec KD, Kopke JE, Jain S, Tan M, Paloyo SR. Kidney Exchange to Overcome Financial Barriers to Kidney Transplantation. Am J Transplant 2017; 17:782-790. [PMID: 27992110 DOI: 10.1111/ajt.14106] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 10/23/2016] [Accepted: 10/24/2016] [Indexed: 01/25/2023]
Abstract
Organ shortage is the major limitation to kidney transplantation in the developed world. Conversely, millions of patients in the developing world with end-stage renal disease die because they cannot afford renal replacement therapy-even when willing living kidney donors exist. This juxtaposition between countries with funds but no available kidneys and those with available kidneys but no funds prompts us to propose an exchange program using each nation's unique assets. Our proposal leverages the cost savings achieved through earlier transplantation over dialysis to fund the cost of kidney exchange between developed-world patient-donor pairs with immunological barriers and developing-world patient-donor pairs with financial barriers. By making developed-world health care available to impoverished patients in the developing world, we replace unethical transplant tourism with global kidney exchange-a modality equally benefitting rich and poor. We report the 1-year experience of an initial Filipino pair, whose recipient was transplanted in the United states with an American donor's kidney at no cost to him. The Filipino donor donated to an American in the United States through a kidney exchange chain. Follow-up care and medications in the Philippines were supported by funds from the United States. We show that the logistical obstacles in this approach, although considerable, are surmountable.
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Affiliation(s)
- M A Rees
- University of Toledo Medical Center, Toledo, OH.,Alliance for Paired Donation, Perrysburg, OH
| | - T B Dunn
- University of Minnesota, Minneapolis, MN
| | - C S Kuhr
- Virginia Mason Medical Center, Seattle, WA
| | - C L Marsh
- Scripps Green Hospital, La Jolla, CA
| | - J Rogers
- Wake Forest Baptist Medical Center, Winston-Salem, NC
| | - S E Rees
- University of Toledo Medical Center, Toledo, OH.,Alliance for Paired Donation, Perrysburg, OH
| | - A Cicero
- ABC Medical Center, Mexico City, Mexico
| | - L J Reece
- Alliance for Paired Donation, Perrysburg, OH
| | - A E Roth
- Stanford University, Stanford, CA
| | - O Ekwenna
- University of Toledo Medical Center, Toledo, OH.,Alliance for Paired Donation, Perrysburg, OH
| | - D E Fumo
- University of Toledo Medical Center, Toledo, OH.,Alliance for Paired Donation, Perrysburg, OH
| | | | - J E Kopke
- Alliance for Paired Donation, Perrysburg, OH
| | - S Jain
- University of Toledo Medical Center, Toledo, OH
| | - M Tan
- Piedmont Hospital, Atlanta, GA
| | - S R Paloyo
- University of the Philippines-Philippine General Hospital, Manila, Philippines.,St. Luke's Medical Center-Global City, Manila, Philippines
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Affiliation(s)
| | - J P Roberts
- Surgery, University of California at San Francisco, San Francisco, CA
| | - A B Leichtman
- Arbor Research Collaborative for Health, Ann Arbor, MI
| | - A E Roth
- Economics, Stanford University, Stanford, CA
| | - M A Rees
- Urology, University of Toledo Medical Center, Toledo, OH.,Alliance for Paired Donation, Maumee, OH
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26
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Melcher ML, Roberts JP, Leichtman AB, Roth AE, Rees MA. Utilization of Deceased Donor Kidneys to Initiate Living Donor Chains. Am J Transplant 2016; 16:1367-70. [PMID: 26833680 PMCID: PMC4844828 DOI: 10.1111/ajt.13740] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/20/2016] [Accepted: 01/24/2016] [Indexed: 01/25/2023]
Abstract
We propose that some deceased donor (DD) kidneys be allocated to initiate nonsimultaneous extended altruistic donor chains of living donor (LD) kidney transplants to address, in part, the huge disparity between patients on the DD kidney waitlist and available donors. The use of DD kidneys for this purpose would benefit waitlisted candidates in that most patients enrolled in kidney paired donation (KPD) systems are also waitlisted for a DD kidney transplant, and receiving a kidney through the mechanism of KPD will decrease pressure on the DD pool. In addition, a LD kidney usually provides survival potential equal or superior to that of DD kidneys. If KPD chains that are initiated by a DD can end in a donation of an LD kidney to a candidate on the DD waitlist, the quality of the kidney allocated to a waitlisted patient is likely to be improved. We hypothesize that a pilot program would show a positive impact on patients of all ethnicities and blood types.
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Affiliation(s)
| | - John P. Roberts
- Surgery, University of California at San Francisco, San Francisco, CA
| | | | | | - Michael A. Rees
- Urology, University of Toledo Medical Center, Toledo, OH,Alliance for Paired Donation, Maumee, OH
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27
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Orandi BJ, Luo X, Massie AB, Garonzik-Wang JM, Lonze BE, Ahmed R, Van Arendonk KJ, Stegall MD, Jordan SC, Oberholzer J, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Nelson PW, Wellen J, Bozorgzadeh A, Gaber AO, Montgomery RA, Segev DL. Survival Benefit with Kidney Transplants from HLA-Incompatible Live Donors. N Engl J Med 2016; 374:940-50. [PMID: 26962729 PMCID: PMC4841939 DOI: 10.1056/nejmoa1508380] [Citation(s) in RCA: 242] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND A report from a high-volume single center indicated a survival benefit of receiving a kidney transplant from an HLA-incompatible live donor as compared with remaining on the waiting list, whether or not a kidney from a deceased donor was received. The generalizability of that finding is unclear. METHODS In a 22-center study, we estimated the survival benefit for 1025 recipients of kidney transplants from HLA-incompatible live donors who were matched with controls who remained on the waiting list or received a transplant from a deceased donor (waiting-list-or-transplant control group) and controls who remained on the waiting list but did not receive a transplant (waiting-list-only control group). We analyzed the data with and without patients from the highest-volume center in the study. RESULTS Recipients of kidney transplants from incompatible live donors had a higher survival rate than either control group at 1 year (95.0%, vs. 94.0% for the waiting-list-or-transplant control group and 89.6% for the waiting-list-only control group), 3 years (91.7% vs. 83.6% and 72.7%, respectively), 5 years (86.0% vs. 74.4% and 59.2%), and 8 years (76.5% vs. 62.9% and 43.9%) (P<0.001 for all comparisons with the two control groups). The survival benefit was significant at 8 years across all levels of donor-specific antibody: 89.2% for recipients of kidney transplants from incompatible live donors who had a positive Luminex assay for anti-HLA antibody but a negative flow-cytometric cross-match versus 65.0% for the waiting-list-or-transplant control group and 47.1% for the waiting-list-only control group; 76.3% for recipients with a positive flow-cytometric cross-match but a negative cytotoxic cross-match versus 63.3% and 43.0% in the two control groups, respectively; and 71.0% for recipients with a positive cytotoxic cross-match versus 61.5% and 43.7%, respectively. The findings did not change when patients from the highest-volume center were excluded. CONCLUSIONS This multicenter study validated single-center evidence that patients who received kidney transplants from HLA-incompatible live donors had a substantial survival benefit as compared with patients who did not undergo transplantation and those who waited for transplants from deceased donors. (Funded by the National Institute of Diabetes and Digestive and Kidney Diseases.).
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Affiliation(s)
- Babak J Orandi
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Xun Luo
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Allan B Massie
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Jacqueline M Garonzik-Wang
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Bonne E Lonze
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Rizwan Ahmed
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Kyle J Van Arendonk
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Mark D Stegall
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Stanley C Jordan
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Jose Oberholzer
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Ty B Dunn
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Lloyd E Ratner
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Sandip Kapur
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Ronald P Pelletier
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - John P Roberts
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Marc L Melcher
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Pooja Singh
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Debra L Sudan
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Marc P Posner
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Jose M El-Amm
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Ron Shapiro
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Matthew Cooper
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - George S Lipkowitz
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Michael A Rees
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Christopher L Marsh
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Bashir R Sankari
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - David A Gerber
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Paul W Nelson
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Jason Wellen
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Adel Bozorgzadeh
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - A Osama Gaber
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Robert A Montgomery
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
| | - Dorry L Segev
- From the Department of Surgery, Johns Hopkins University School of Medicine, Baltimore (B.J.O., X.L., A.B.M., B.E.L., R.A., K.J.V.A., R.A.M., D.L. Segev); the Department of Surgery, Barnes-Jewish Hospital, St. Louis (J.M.G.-W., J.W.); the Department of Surgery, Mayo Clinic, Rochester (M.D.S.), and the Department of Surgery, University of Minnesota, Minneapolis (T.B.D.) - both in Minnesota; the Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles (S.C.J.), the Department of Surgery, University of California,San Francisco, San Francisco (J.P.R.), the Department of Surgery, Stanford University, Palo Alto (M.L.M.), and the Department of Surgery, Scripps Clinic and Green Hospital, La Jolla (C.L.M.) - all in California; the Department of Surgery, University of Illinois-Chicago, Chicago (J.O.); the Department of Surgery, Columbia University Medical Center (L.E.R.), and the Department of Surgery, New York Presbyterian-Weill Cornell Medical Center (S.K.) - both in New York; the Department of Surgery, Ohio State University, Columbus (R.P.P.), the Department of Urology, University of Toledo Medical Center, Toledo (M.A.R.), and the Department of Urology, Cleveland Clinic, Cleveland (B.R.S.) - all in Ohio; the Department of Medicine, Thomas Jefferson University Hospital, Philadelphia (P.S.); the Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh (R.S.); the Department of Surgery, Duke University Medical Center, Durham (D.L. Sudan), and the Department of Surgery, University of North Carolina School of Medicine, Chapel Hill (D.A.G.) - both in North Carolina; the Department of Surgery, Virginia Commonwealth University, Richmond (M.P.P.); Integris Baptist Medical Center, Transplant Division, Oklahoma City (J.M.E.-A.); Medstar Georgetown Transplant Institute, Washington, DC (M.C.); the Department of Surgery, Baystate Medical Center, Springfield (G.S.L.), and the Department of Surgery, University of Massachusetts Memorial Medical Ce
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Waterman AD, Morgievich M, Cohen DJ, Butt Z, Chakkera HA, Lindower C, Hays RE, Hiller JM, Lentine KL, Matas AJ, Poggio ED, Rees MA, Rodrigue JR, LaPointe Rudow D. Living Donor Kidney Transplantation: Improving Education Outside of Transplant Centers about Live Donor Transplantation--Recommendations from a Consensus Conference. Clin J Am Soc Nephrol 2015; 10:1659-69. [PMID: 26116651 DOI: 10.2215/cjn.00950115] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Living donor kidney transplantation (LDKT) offers better quality of life and clinical outcomes, including patient survival, compared with remaining on dialysis or receiving a deceased donor kidney transplant. Although LDKT education within transplant centers for both potential recipients and living donors is very important, outreach and education to kidney patients in settings other than transplant centers and to the general public is also critical to increase access to this highly beneficial treatment. In June 2014, the American Society of Transplantation's Live Donor Community of Practice, with the support of 10 additional sponsors, convened a consensus conference to determine best practices in LDKT, including a workgroup focused on developing a set of recommendations for optimizing outreach and LDKT education outside of transplant centers. Members of this workgroup performed a structured literature review, conducted teleconference meetings, and met in person at the 2-day conference. Their efforts resulted in consensus around the following recommendations. First, preemptive transplantation should be promoted through increased LDKT education by primary care physicians and community nephrologists. Second, dialysis providers should be trained to educate their own patients about LDKT and deceased donor kidney transplantation. Third, partnerships between community organizations, organ procurement organizations, religious organizations, and transplant centers should be fostered to support transplantation. Fourth, use of technology should be improved or expanded to better educate kidney patients and their support networks. Fifth, LDKT education and outreach should be improved for kidney patients in rural areas. Finally, a consensus-driven, evidence-based public message about LDKT should be developed. Discussion of the effect and potential for implementation around each recommendation is featured, particularly regarding reducing racial and socioeconomic disparities in access to LDKT. To accomplish these recommendations, the entire community of professionals and organizations serving kidney patients must work collaboratively toward ensuring accurate, comprehensive, and up-to-date LDKT education for all patients, thereby reducing barriers to LDKT access and increasing LDKT rates.
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Affiliation(s)
- Amy D Waterman
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material.
| | - Marie Morgievich
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - David J Cohen
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Zeeshan Butt
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Harini A Chakkera
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Carrie Lindower
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Rebecca E Hays
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Janet M Hiller
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Krista L Lentine
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Arthur J Matas
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Emilio D Poggio
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Michael A Rees
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - James R Rodrigue
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
| | - Dianne LaPointe Rudow
- Due to the number of contributing authors,the affiliations are provided in the Supplemental Material
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Orandi BJ, Garonzik-Wang JM, Massie AB, Zachary AA, Montgomery JR, Van Arendonk KJ, Stegall MD, Jordan SC, Oberholzer J, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Nelson PW, Wellen J, Bozorgzadeh A, Gaber AO, Montgomery RA, Segev DL. Quantifying the risk of incompatible kidney transplantation: a multicenter study. Am J Transplant 2014; 14:1573-80. [PMID: 24913913 DOI: 10.1111/ajt.12786] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/17/2014] [Accepted: 03/17/2014] [Indexed: 01/25/2023]
Abstract
Incompatible live donor kidney transplantation (ILDKT) offers a survival advantage over dialysis to patients with anti-HLA donor-specific antibody (DSA). Program-specific reports (PSRs) fail to account for ILDKT, placing this practice at regulatory risk. We collected DSA data, categorized as positive Luminex, negative flow crossmatch (PLNF) (n = 185), positive flow, negative cytotoxic crossmatch (PFNC) (n = 536) or positive cytotoxic crossmatch (PCC) (n = 304), from 22 centers. We tested associations between DSA, graft loss and mortality after adjusting for PSR model factors, using 9669 compatible patients as a comparison. PLNF patients had similar graft loss; however, PFNC (adjusted hazard ratio [aHR] = 1.64, 95% confidence interval [CI]: 1.15-2.23, p = 0.007) and PCC (aHR = 5.01, 95% CI: 3.71-6.77, p < 0.001) were associated with increased graft loss in the first year. PLNF patients had similar mortality; however, PFNC (aHR = 2.04; 95% CI: 1.28-3.26; p = 0.003) and PCC (aHR = 4.59; 95% CI: 2.98-7.07; p < 0.001) were associated with increased mortality. We simulated Centers for Medicare & Medicaid Services flagging to examine ILDKT's effect on the risk of being flagged. Compared to equal-quality centers performing no ILDKT, centers performing 5%, 10% or 20% PFNC had a 1.19-, 1.33- and 1.73-fold higher odds of being flagged. Centers performing 5%, 10% or 20% PCC had a 2.22-, 4.09- and 10.72-fold higher odds. Failure to account for ILDKT's increased risk places centers providing this life-saving treatment in jeopardy of regulatory intervention.
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Affiliation(s)
- B J Orandi
- Departments of Surgery and Medicine, Johns Hopkins Hospital, Baltimore, MD
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Mierzejewska B, Schroder PM, Baum CE, Blair A, Smith C, Duquesnoy RJ, Marrari M, Gohara A, Malhotra D, Kaw D, Liwski R, Rees MA, Stepkowski S. Early acute antibody-mediated rejection of a negative flow crossmatch 3rd kidney transplant with exclusive disparity at HLA-DP. Hum Immunol 2014; 75:703-8. [PMID: 24755353 DOI: 10.1016/j.humimm.2014.04.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 02/27/2014] [Accepted: 04/05/2014] [Indexed: 02/02/2023]
Abstract
Donor-specific alloantibodies (DSA) to HLA-DP may cause antibody-mediated rejection (AMR), especially in re-transplants. We describe the immunization history of a patient who received 3 kidney transplants; the 3rd kidney was completely matched except at DPA1 and DPB1. Prior to the 3rd transplant, single antigen bead analysis (SAB) showed DSA reactivity against DPA1 shared by the 1st and 3rd donors, but B and T flow crossmatch (FXM) results were negative. Within 11 days the 3rd transplant underwent acute C4d+ AMR which coincided with the presence of complement (C1q)-binding IgG1 DSA against donor DPA1 and DPB1. Using HLAMatchmaker and SAB, we provide evidence that eplet (epitope) spreading on DPA1 and eplet sharing on differing DPB1 alleles of the 1st and 3rd transplants was associated with AMR. Since weak DSA to DPA1/DPB1 may induce acute AMR with negative FXM, donor DPA1/DPB1 high resolution typing should be considered in sensitized patients with DP-directed DSA.
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Affiliation(s)
- Beata Mierzejewska
- Department of Urology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Paul M Schroder
- Department of Microbiology and Immunology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Caitlin E Baum
- Department of Microbiology and Immunology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Annette Blair
- Department of Pathology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Connie Smith
- Department of Pathology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Rene J Duquesnoy
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Marilyn Marrari
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Amira Gohara
- Department of Pathology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Deepak Malhotra
- Department of Internal Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Dinkar Kaw
- Department of Internal Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Robert Liwski
- HLA Typing Laboratory, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michael A Rees
- Department of Urology, University of Toledo College of Medicine, Toledo, OH 43614, USA
| | - Stanislaw Stepkowski
- Department of Microbiology and Immunology, University of Toledo College of Medicine, Toledo, OH 43614, USA.
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Li Y, Song PXK, Leichtman AB, Rees MA, Kalbfleisch JD. Decision Making in Kidney Paired Donation Programs with Altruistic Donors. Sort (Barc) 2014; 38:53-72. [PMID: 25309603 PMCID: PMC4193813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In recent years, kidney paired donation (KPD) has been extended to include living non-directed or altruistic donors, in which an altruistic donor donates to the candidate of an incompatible donor-candidate pair with the understanding that the donor in that pair will further donate to the candidate of a second pair, and so on; such a process continues and thus forms an altruistic donor-initiated chain. In this paper, we propose a novel strategy to sequentially allocate the altruistic donor (or bridge donor) so as to maximize the expected utility; analogous to the way a computer plays chess, the idea is to evaluate different allocations for each altruistic donor (or bridge donor) by looking several moves ahead in a derived look-ahead search tree. Simulation studies are provided to illustrate and evaluate our proposed method.
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Waldman JP, Vogel T, Burlak C, Coussios C, Dominguez J, Friend P, Rees MA. Blocking porcine sialoadhesin improves extracorporeal porcine liver xenoperfusion with human blood. Xenotransplantation 2013; 20:239-51. [PMID: 23822217 DOI: 10.1111/xen.12043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 05/29/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND Patients in fulminant hepatic failure currently do not have a temporary means of support while awaiting liver transplantation. A potential therapeutic approach for such patients is the use of extracorporeal perfusion with porcine livers as a form of "liver dialysis". During a 72-h extracorporeal perfusion of porcine livers with human blood, porcine Kupffer cells bind to and phagocytose human red blood cells (hRBC) causing the hematocrit to decrease to 2.5% of the original value. Our laboratory has identified porcine sialoadhesin expressed on Kupffer cells as the lectin responsible for binding N-acetylneuraminic acid on the surface of the hRBC. We evaluated whether blocking porcine sialoadhesin prevents the recognition and subsequent destruction of hRBCs seen during extracorporeal porcine liver xenoperfusion. METHODS Ex vivo studies were performed using wild type pig livers perfused with isolated hRBCs for 72-h in the presence of an anti-porcine sialoadhesin antibody or isotype control. RESULTS The addition of an anti-porcine sialoadhesin antibody to an extracorporeal porcine liver xenoperfusion model reduces the loss of hRBC over a 72-h period. Sustained liver function was demonstrated throughout the perfusion. CONCLUSIONS This study illustrates the role of sialoadhesin in mediating the destruction of hRBCs in an extracorporeal porcine liver xenoperfusion model.
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Affiliation(s)
- Joshua P Waldman
- Department of Urology, University of Toledo Medical Center, Toledo, OH 43614, USA
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33
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Melcher ML, Blosser CD, Baxter-Lowe LA, Delmonico FL, Gentry SE, Leishman R, Knoll GA, Leffell MS, Leichtman AB, Mast DA, Nickerson PW, Reed EF, Rees MA, Rodrigue JR, Segev DL, Serur D, Tullius SG, Zavala EY, Feng S. Dynamic challenges inhibiting optimal adoption of kidney paired donation: findings of a consensus conference. Am J Transplant 2013; 13:851-860. [PMID: 23398969 DOI: 10.1111/ajt.12140] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 12/10/2012] [Accepted: 12/10/2012] [Indexed: 01/25/2023]
Abstract
While kidney paired donation (KPD) enables the utilization of living donor kidneys from healthy and willing donors incompatible with their intended recipients, the strategy poses complex challenges that have limited its adoption in United States and Canada. A consensus conference was convened March 29-30, 2012 to address the dynamic challenges and complexities of KPD that inhibit optimal implementation. Stakeholders considered donor evaluation and care, histocompatibility testing, allocation algorithms, financing, geographic challenges and implementation strategies with the goal to safely maximize KPD at every transplant center. Best practices, knowledge gaps and research goals were identified and summarized in this document.
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Affiliation(s)
- M L Melcher
- Department of Surgery, Stanford University, Stanford, CA
| | - C D Blosser
- Department of Internal Medicine, University of Iowa, Iowa City, IA
| | | | - F L Delmonico
- Department of Surgery, Massachusetts General Hospital, Boston, MA.,New England Organ Bank, Boston, MA
| | - S E Gentry
- Department of Mathematics, U.S. Naval Academy, Annapolis, MD
| | - R Leishman
- United Network of Organ Sharing, Richmond, VA
| | - G A Knoll
- Department of Medicine, Ottawa Hospital, Ottawa, ON
| | - M S Leffell
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - A B Leichtman
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - D A Mast
- Stanford Hospital and Clinics, Palo Alto, CA
| | - P W Nickerson
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB
| | - E F Reed
- Department of Pathology, University of California Los Angeles, Los Angeles, CA
| | - M A Rees
- Department of Urology & Pathology, University of Toledo Medical Center, Toledo, OH
| | - J R Rodrigue
- Transplant Institute, Beth Israel Deaconess Medical School, Boston, MA
| | - D L Segev
- Department of Surgery, Johns Hopkins University, Baltimore, MD
| | - D Serur
- Department of Surgery, Cornell University, New York, NY
| | - S G Tullius
- Department of Surgery, Brigham & Women's Hospital Harvard University, Boston, MA
| | - E Y Zavala
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - S Feng
- Department of Surgery, UCSF, San Francisco, CA
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Abstract
Extracorporeal porcine liver perfusion is being developed as a bridge to liver allotransplantation for patients with fulminant hepatic failure. This strategy is limited by porcine Kupffer cell destruction of human erythrocytes, mediated by lectin binding of a sialic acid motif in the absence of antibody and complement. Sialoadhesin, a macrophage restricted lectin that binds sialic acid, was originally described as a sheep erythrocyte binding receptor. Given similarities between sialoadhesin and the unidentified macrophage lectin in our model, we hypothesized porcine sialoadhesin contributed to recognition of human erythrocytes. Two additional types of macrophages were identified to bind human erythrocytes-spleen and alveolar. Expression of sialoadhesin was confirmed by immunofluorescence in porcine tissues and by flow cytometry on primary macrophages. A stable transgenic cell line expressing porcine sialoadhesin (pSn CHO) bound human erythrocytes, while a sialoadhesin mutant cell line did not. Porcine macrophage and pSn CHO recognition of human erythrocytes was inhibited approximately 90% by an antiporcine sialoadhesin monoclonal antibody and by human erythrocyte glycoproteins. Furthermore, this binding was substantially reduced by sialidase treatment of erythrocytes. These data support the hypothesis that porcine sialoadhesin is a xenogeneic receptor that mediates porcine macrophage binding of human erythrocytes in a sialic acid-dependent manner.
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Affiliation(s)
- Linda G. Brock
- Department of Urology, University of Toledo Health Sciences Campus, Toledo, OH USA
| | - Peter L. Delputte
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Joshua P. Waldman
- Department of Urology, University of Toledo Health Sciences Campus, Toledo, OH USA
| | - Hans J. Nauwynck
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Michael A. Rees
- Department of Urology, University of Toledo Health Sciences Campus, Toledo, OH USA
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Abstract
BACKGROUND We address accusations linking AIDS with testis transplantation performed by a French surgeon, Serge Voronoff (1866-1951), and their implications in the future of animal-to-human organ transplantation. METHODS Biographical literature on Voronoff and scientific literature on xenotransplantation and the origin of HIV were reviewed. RESULTS IN the 1920s, Serge Voronoff transplanted testes from primates into humans to revitalize them sexually and physically, making him one of the first surgeons to perform xenotransplantation-transplanting live tissues between species. In recent years, some have postulated that Voronoff's transplants may have caused or contributed to the AIDS epidemic. However, consensus among virologists holds that HIV most likely originated from a chimpanzee virus known as simian immunodeficiency viruses (SIV) which many agree was transmitted to humans during the hunting of primates in the early 1900s. As these accusations have never been addressed, evidence is reviewed which refutes the claims. HIV isolate studies are summarized, which show that SIV was most likely transferred to humans from a chimpanzee species different from those used by Voronoff. Furthermore, literature suggests that Voronoff's experiments were performed in Europe and the United States, not central Africa. CONCLUSIONS Over 100,000 people await organ transplants, making the prospect of using animal organs to meet demand increasingly favorable. The accusations against Voronoff and others have led to increased concern over cross-species disease transfer. The evidence presented refutes those claims and is used to explain the need for further research into xenotransplantation.
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Affiliation(s)
- Petar Bajic
- Department of Urology and Renal Transplantation, University of Toledo College of Medicine, Toledo, OH 43614, USA.
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Ekser B, Burlak C, Waldman JP, Lutz AJ, Paris LL, Veroux M, Robson SC, Rees MA, Ayares D, Gridelli B, Tector AJ, Cooper DKC. Immunobiology of liver xenotransplantation. Expert Rev Clin Immunol 2012; 8:621-34. [PMID: 23078060 PMCID: PMC3774271 DOI: 10.1586/eci.12.56] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Pigs are currently the preferred species for future organ xenotransplantation. With advances in the development of genetically modified pigs, clinical xenotransplantation is becoming closer to reality. In preclinical studies (pig-to-nonhuman primate), the xenotransplantation of livers from pigs transgenic for human CD55 or from α1,3-galactosyltransferase gene-knockout pigs+/- transgenic for human CD46, is associated with survival of approximately 7-9 days. Although hepatic function, including coagulation, has proved to be satisfactory, the immediate development of thrombocytopenia is very limiting for pig liver xenotransplantation even as a 'bridge' to allotransplantation. Current studies are directed to understand the immunobiology of platelet activation, aggregation and phagocytosis, in particular the interaction between platelets and liver sinusoidal endothelial cells, hepatocytes and Kupffer cells, toward identifying interventions that may enable clinical application.
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Affiliation(s)
- Burcin Ekser
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Surgery, Transplant Institute, Indiana University School of Medicine, Indiana University Health, Indianapolis, IN, USA
- Department of Surgery, Transplantation and Advanced Technologies, Vascular Surgery and Organ Transplant Unit, University Hospital of Catania, Catania, Italy
| | - Christopher Burlak
- Department of Surgery, Transplant Institute, Indiana University School of Medicine, Indiana University Health, Indianapolis, IN, USA
| | - Joshua P Waldman
- Department of Urology, University of Toledo Health Sciences Campus, Toledo, OH, USA
| | - Andrew J Lutz
- Department of Surgery, Transplant Institute, Indiana University School of Medicine, Indiana University Health, Indianapolis, IN, USA
| | - Leela L Paris
- Department of Surgery, Transplant Institute, Indiana University School of Medicine, Indiana University Health, Indianapolis, IN, USA
| | - Massimiliano Veroux
- Department of Surgery, Transplantation and Advanced Technologies, Vascular Surgery and Organ Transplant Unit, University Hospital of Catania, Catania, Italy
| | - Simon C Robson
- Liver Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Michael A Rees
- Department of Urology, University of Toledo Health Sciences Campus, Toledo, OH, USA
| | | | - Bruno Gridelli
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT), Palermo, Italy
| | - A Joseph Tector
- Department of Surgery, Transplant Institute, Indiana University School of Medicine, Indiana University Health, Indianapolis, IN, USA
| | - David KC Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Rees MA, Schnitzler MA, Zavala EY, Cutler JA, Roth AE, Irwin FD, Crawford SW, Leichtman AB. Call to develop a standard acquisition charge model for kidney paired donation. Am J Transplant 2012; 12:1392-7. [PMID: 22487555 DOI: 10.1111/j.1600-6143.2012.04034.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We propose a Medicare Demonstration Project to develop a standard acquisition charge for kidney paired donation. A new payment strategy is required because Medicare and commercial insurance companies may not directly pay living donor costs intended to lead to transplantation of a beneficiary of a different insurance provider. Until the 1970s, when organ procurement organizations were empowered to serve as financial intermediaries to pay the upfront recovery expenses for deceased donor kidneys before knowing the identity of the recipient, there existed similar limitations in the recovery and placement of deceased donor organs. Analogous to the recovery of deceased donor kidneys, kidney paired donation requires the evaluation of living donors before identifying their recipient. Tissue typing, crossmatching and transportation of living donors or their kidneys represent additional financial barriers. Finally, the administrative expenses of the organizations that identify and coordinate kidney paired donation transplantation require reimbursement akin to that necessary for organ procurement organizations. To expand access to kidney paired donation for more patients, we propose a model to reimburse paired donation expenses analogous to the proven strategy used for over 30 years to pay for deceased donor solid organ transplantation in America.
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Affiliation(s)
- M A Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH Alliance for Paired Donation, Maumee, OH, USA.
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Abstract
Since 2008, kidney exchange in America has grown in part from the incorporation of nondirected donors in transplant chains rather than simple exchanges. It is controversial whether these chains should be performed simultaneously 'domino-paired donation', (DPD) or nonsimultaneously 'nonsimultaneous extended altruistic donor, chains (NEAD). NEAD chains create 'bridge donors' whose incompatible recipients receive kidneys before the bridge donor donates, and so risk reneging by bridge donors, but offer the opportunity to create more transplants by overcoming logistical barriers inherent in simultaneous chains. Gentry et al. simulated whether DPD or NEAD chains would produce more transplants when chain segment length was limited to three transplants, and reported that DPD performed at least as well as NEAD chains. As this finding contrasts with the experience of several groups involved in kidney-paired donation, we performed simulations that allowed for longer chain segments and used actual patient data from the Alliance for Paired Donation. When chain segments of 4-6 transplants are allowed in the simulations, NEAD chains produce more transplants than DPD. Our simulations showed not only more transplants as chain length increased, but also that NEAD chains produced more transplants for highly sensitized and blood type O recipients.
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Affiliation(s)
- I Ashlagi
- Department of Operations Management, Sloan School of Management, Massachusetts Institute of Technology, Cambridge, MA, USA
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Segev DL, Veale JL, Berger JC, Hiller JM, Hanto RL, Leeser DB, Geffner SR, Shenoy S, Bry WI, Katznelson S, Melcher ML, Rees MA, Samara ENS, Israni AK, Cooper M, Montgomery RJ, Malinzak L, Whiting J, Baran D, Tchervenkov JI, Roberts JP, Rogers J, Axelrod DA, Simpkins CE, Montgomery RA. Transporting live donor kidneys for kidney paired donation: initial national results. Am J Transplant 2011; 11:356-60. [PMID: 21272238 DOI: 10.1111/j.1600-6143.2010.03386.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Optimizing the possibilities for kidney-paired donation (KPD) requires the participation of donor-recipient pairs from wide geographic regions. Initially it was envisaged that donors would travel to the recipient center; however, to minimize barriers to participation and simplify logistics, recent trends have involved transporting the kidneys rather than the donors. The goal of this study was to review outcomes of this practice. KPD programs throughout the United States were directly queried about all transplants involving live donor kidney transport. Early graft function was assessed by urine output in the first 8 h, postoperative serum creatinine trend, and incidence of delayed graft function. Between April 27, 2007 and April 29, 2010, 56 live donor kidneys were transported among 30 transplant centers. Median CIT was 7.2 h (IQR 5.5-9.7, range 2.5-14.5). Early urine output was robust (>100 cc/h) in all but four patients. Creatinine nadir was <2.0 mg/dL in all (including the four with lower urine output) but one patient, occurring at a median of 3 days (IQR 2-5, range 1-49). No patients experienced delayed graft function as defined by the need for dialysis in the first week. Current evidence suggests that live donor kidney transport is safe and feasible.
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Affiliation(s)
- D L Segev
- Department of Surgery Department of Epidemiology, Johns Hopkins University, Baltimore, MD, USA.
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Pierson RN, Dorling A, Ayares D, Rees MA, Seebach JD, Fishman JA, Hering BJ, Cooper DKC. Current status of xenotransplantation and prospects for clinical application. Xenotransplantation 2009; 16:263-80. [PMID: 19796067 PMCID: PMC2866107 DOI: 10.1111/j.1399-3089.2009.00534.x] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Xenotransplantation is one promising approach to bridge the gap between available human cells, tissues, and organs and the needs of patients with diabetes or end-stage organ failure. Based on recent progress using genetically modified source pigs, improving results with conventional and experimental immunosuppression, and expanded understanding of residual physiologic hurdles, xenotransplantation appears likely to be evaluated in clinical trials in the near future for some select applications. This review offers a comprehensive overview of known mechanisms of xenograft injury, a contemporary assessment of preclinical progress and residual barriers, and our opinions regarding where breakthroughs are likely to occur.
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Affiliation(s)
- Richard N Pierson
- Division of Cardiac Surgery, Department of Surgery, University of Maryland, Baltimore VAMC, Baltimore, MD 21201, USA.
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Rees MA, Kopke JE, Pelletier RP, Segev DL, Rutter ME, Fabrega AJ, Rogers J, Pankewycz OG, Hiller J, Roth AE, Sandholm T, Unver MU, Montgomery RA. A nonsimultaneous, extended, altruistic-donor chain. N Engl J Med 2009; 360:1096-101. [PMID: 19279341 DOI: 10.1056/nejmoa0803645] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report a chain of 10 kidney transplantations, initiated in July 2007 by a single altruistic donor (i.e., a donor without a designated recipient) and coordinated over a period of 8 months by two large paired-donation registries. These transplantations involved six transplantation centers in five states. In the case of five of the transplantations, the donors and their coregistered recipients underwent surgery simultaneously. In the other five cases, "bridge donors" continued the chain as many as 5 months after the coregistered recipients in their own pairs had received transplants. This report of a chain of paired kidney donations, in which the transplantations were not necessarily performed simultaneously, illustrates the potential of this strategy.
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Affiliation(s)
- Michael A Rees
- Department of Urology, University of Toledo Medical Center, Toledo, OH 43614, USA.
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Rees MA, Bargnesi D, Samy K, Reece L. Altruistic donation through the Alliance for Paired Donation. Clin Transpl 2009:235-246. [PMID: 20524289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Kidney paired donation is an evolving strategy for overcoming the incompatibility barrier inherent in living donor kidney transplantation. As evidence of the growing interest in this new approach, more than 800 paired donation transplants have been performed in the United States as of February 2010, greater than half of which were performed in 2008 and 2009. Recent advances in this field have incorporated non-directed or altruistic donors to initiate chains of transplants that are either performed simultaneously, or by utilizing "bridge donors" who continue a nonsimultaneous chain at a later date. In this report from the Alliance for Paired Donation, we summarize our experience with altruistic and bridge donors. The program has utilized 6 altruistic-donor initiated chains that have resulted in 22 transplants and have generated 16 bridge donors. In addition, we report our experience with website registrations and national media exposure that has resulted in over 3500 registrations on the APD website, with 37% expressing interest in altruistic donation. We discuss the financial barriers to paired donation in America, and suggest a solution similar to the CMS-approved organ procurement organization standard acquisition charges for deceased donors. Finally, we propose a new approach to integrate paired donation and deceased donors that would allow altruistic living donors to benefit patients on the waiting list without willing, but incompatible donors and simultaneously eliminate the risk of reneging in nonsimultaneous extended altruistic donor chains. We call this new approach a "reverse list exchange".
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Bruhl SR, Braida AL, Rees MA, Pandya UH. Postreperfusion syndrome during living-related donor renal transplantation: a case report. Transplant Proc 2008; 40:1754-5. [PMID: 18589187 DOI: 10.1016/j.transproceed.2008.03.130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2007] [Accepted: 03/06/2008] [Indexed: 11/15/2022]
Abstract
UNLABELLED Herein we report a case of postreperfusion syndrome (PRS) occurring during renal transplant. PRS, which is defined as a drop in mean arterial blood pressure by at least 30% for a minimum of 1 minute within 5 minutes of reperfusion and classically includes braydycardia and high pulmonary filling pressures, was first described in liver transplantation. Surprisingly, no case of PRS has been previously reported during renal transplantation. CASE REPORT A 66-year-old woman underwent a living-related renal transplant. Upon completing the vascular anastomosis, arterial and venous clamps were removed to restore kidney perfusion. Subsequently, the patient developed persistent sinus bradycardia at 30 bpm with simultaneous hypotension that lasted for approximately 2 minutes. Although saline boluses, ephedrine, atropine, and 100 microg of epinephrine were administered, the patient's hemodynamics were not restored until an additional 300 microg of epinephrine were administered. CONCLUSION This case confirms the hypothesis of previous authors who predicted that PRS likely occurs in non-liver transplantation.
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Affiliation(s)
- S R Bruhl
- Department of Cardiology, University of Toledo Medical Center, Toledo, Ohio 43614, USA.
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Tedesco-Silva H, Pescovitz MD, Cibrik D, Rees MA, Mulgaonkar S, Kahan BD, Gugliuzza KK, Rajagopalan PR, Esmeraldo RDM, Lord H, Salvadori M, Slade JM. Randomized controlled trial of FTY720 versus MMF in de novo renal transplantation. Transplantation 2007; 82:1689-97. [PMID: 17198261 DOI: 10.1097/01.tp.0000251718.95622.b3] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND Phase II trials of FTY720, a novel immunomodulator, have shown promise in preventing rejection with both standard and reduced cyclosporine exposure. This study was designed to confirm those findings. METHODS This one-year, multicenter, randomized, phase III study in 696 de novo renal transplant patients compared FTY720 5 mg plus reduced-dose cyclosporine (RDC) or FTY720 2.5 mg plus full-dose cyclosporine (FDC) with mycophenolate mofetil (MMF) plus FDC. All patients received concomitant corticosteroid therapy without antibody induction. The primary efficacy composite endpoint was the incidence of first treated biopsy-proven acute rejection (treated BPAR), graft loss, death or premature study discontinuation at month 12. RESULTS FTY720 2.5 mg plus FDC was demonstrated to be non-inferior to MMF plus FDC as the primary efficacy endpoint (30.8% and 30.6%) was comparable. The FTY720 5 mg plus RDC treatment regimen was discontinued due to an increased incidence of acute rejection episodes (primary endpoint 43.3%). FTY720 was associated with significantly lower creatinine clearance with a mean difference at 12 months between FTY720 2.5 mg plus FDC and MMF plus FDC of 8 ml/min. CONCLUSIONS While FTY720 2.5 mg plus FDC yielded similar efficacy to MMF plus FDC, the FTY720 5 mg plus RDC did not allow a 50% reduction in cyclosporine exposure. The associated lower creatinine clearance indicated that FTY720 combined with cyclosporine provided no benefit over standard care.
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Affiliation(s)
- Helio Tedesco-Silva
- Setor de Transplante Renal, Hospital do Rim Hipertensão/ UNIFESP, Rua Borges, Lagoa, 960-11o andar, Sao Paulo, SP, Brazil.
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Abstract
BACKGROUND We have previously shown that when porcine livers are perfused with human blood, porcine Kupffer cells extract up to 3 units of human erythrocytes over the course of a 72 hr perfusion. We have previously hypothesized that the recognition event responsible for this interaction involves a lectin receptor on the surface of the porcine Kupffer cell interacting with a carbohydrate epitope on the surface of the human erythrocytes. METHODS Treatments to disrupt the protein core of purified glycoproteins from the surface of human erythrocytes included: pronase, trypsin, beta-mercaptoethanol (2-ME), and heating to 90 degrees . Alternatively, we have removed the carbohydrate residues from purified human red blood cell (RBC) glycoproteins using glycosidases. Erythrocyte binding in the presence or absence of treated glycoproteins was quantified by Chromium-labeled RBC recognition by primary cultures of porcine Kupffer cells. RESULTS Human, but not porcine, erythrocytes were bound by in vitro primary cultures of porcine Kupffer cells. Binding was inhibited by preincubation of porcine Kupffer cells with purified human erythrocyte glycoproteins (hEGP) from human erythrocyte membranes. Pretreatment of human EGP with pronase, trypsin, 2-ME, or heating did not interfere with the ability of human EGP to inhibit the binding of human erythrocytes to porcine Kupffer cells. Deglycosylation of the purified hEGP completely disrupted hEGP ability to inhibit the binding of human erythrocytes to porcine Kupffer cells. CONCLUSION We conclude that porcine Kupffer cells bind xenogeneic human RBC by recognition of a carbohydrate epitope on the surface of human erythrocytes. We hypothesize that this binding is mediated by a porcine Kupffer cell lectin receptor.
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Affiliation(s)
- Christopher Burlak
- Department of Urology, Medical College of Ohio, Toledo, Ohio 43614, USA.
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Abstract
BACKGROUND We have previously shown that recognition of human erythrocytes by porcine Kupffer cells is mediated by a carbohydrate-dependent mechanism. The present study explores the possible ligands existing on human glycophorin A and tests their ability to inhibit erythrocyte rosette formation. METHODS Human erythrocytes were tested for ABO and MN specificity and used as targets in a 51Chromium quantitative erythrocyte rosette assay. Monosaccharides present on human glycophorin A, neuraminyl lactoses, bovine and porcine submaxillary mucins (BSM and PSM), and hyaluronic acid as well as proteoglycan N-linked glycosidase F(PNGaseF)- and sialidase A-treated human erythrocyte glycoproteins (hEGP) and human erythrocytes were all tested for inhibitory potential in the rosetting assay. RESULTS Porcine Kupffer-cell recognition of human erythrocytes was insensitive to differences in blood groups A, B, O, or MN. At 30 mM, the monosaccharide, N-acetylneuraminic acid, and the trisaccharide mixture, neuraminyl lactoses, disrupted human erythrocyte recognition by 25% and 30%, respectively. A dilution of BSM but not PSM inhibited the rosetting assay by 17% (.2 mg/mL), 33% (1 mg/mL), and 53% (2 mg/mL). The same dilution of hyaluronic acid had no effect on rosetting. Removal of N-linked oligosaccharides from hEGP with PNGaseF did not impair its ability to inhibit the rosetting assay. In contrast, removal of sialic acid completely abrogated its inhibitory ability. Treatment of whole human erythrocytes with sialidase A likewise prevented recognition by porcine Kupffer cells. CONCLUSIONS Terminal sialic acid on human erythrocytes is a target recognized by porcine Kupffer cells, suggesting a role for a sialic-acid receptor in innate cellular recognition of xenogeneic epitopes. Inasmuch as this work reveals a carbohydrate-recognition mechanism for cellular rejection, we shed light on a potential new boundary that will need to be overcome within xenotransplantation.
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Affiliation(s)
- Michael A Rees
- Department of Urology, Medical College of Ohio, Toledo, USA.
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Rees MA, Butler AJ, Brons IGM, Negus MC, Skepper JN, Friend PJ. Evidence of macrophage receptors capable of direct recognition of xenogeneic epitopes without opsonization. Xenotransplantation 2005; 12:13-9. [PMID: 15598269 DOI: 10.1111/j.1399-3089.2004.00195.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND We have previously demonstrated that porcine livers perfused with human blood remove most of the erythrocytes from three units of human blood over the course of a 72-h extracorporeal perfusion. Red blood cell loss did not appear to involve classical complement pathway-mediated hemolysis, but instead resulted from porcine Kupffer cell phagocytosis. METHODS We developed a method incorporating collagenase digestion and metrizamide separation to isolate and maintain porcine Kupffer cells in primary culture. An in vitro rosetting assay was used to assess the binding of human and porcine erythrocytes to porcine Kupffer cells. Immunohistochemistry was used to confirm the presence of porcine macrophages. The rosetting assay was quantified using 51Cr-labeling of erythrocytes to assay for both rosette formation and phagocytosis. RESULTS Porcine Kupffer cells were successfully isolated and maintained in primary culture. The presence of porcine macrophages was confirmed using the monoclonal antibody 74-22-15A. Human, but not porcine, erythrocytes were bound in an in vitro rosetting assay as confirmed by immunohistochemistry, electron microscopy and 51Cr-quantitation. Porcine Kupffer cells bound human erythrocytes regardless of the presence of opsonizing antibody. Approximately 70% of the isolated porcine Kupffer cells demonstrated the capacity to bind non-opsonized human erythrocytes. Phagocytosis was not observed. CONCLUSIONS Using primary porcine Kupffer cell cultures, we have demonstrated that a subpopulation of porcine macrophages has the ability to recognize specifically xenogeneic human erythrocyte epitopes without the need for prior opsonization. The possibility is discussed that lectin-mediated carbohydrate binding plays a role in the cellular and humoral recognition and rejection of xenografts.
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Affiliation(s)
- Michael A Rees
- Department of Surgery, University of Cambridge, Cambridge, UK. mrees.mco.edu
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Rees MA, Butler AJ, Negus MC, Davies HFS, Friend PJ. Classical pathway complement destruction is not responsible for the loss of human erythrocytes during porcine liver perfusion. Transplantation 2004; 77:1416-23. [PMID: 15167601 DOI: 10.1097/01.tp.0000121135.24688.a3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Porcine livers perfused with human blood destroy 85% of human erythrocytes (red blood cells [RBC]) during prolonged extracorporeal perfusion, raising the possibility of a complement-mediated graft-versus-host effect. METHODS Isolated porcine livers were perfused with fresh human blood. Plasma samples were analyzed for complement production by reverse CH50 analysis and porcine immunoglobulin class and specificity by enzyme-linked immunosorbent assay (ELISA) and flow cytometry. Anti-CD59 and anti-decay accelerating factor (DAF) monoclonal antibody were used to investigate whether human complement regulatory proteins inhibit porcine complement. RESULTS After 64 hr of perfusion of porcine livers with human blood, mean complement activity in the perfusate was 95% of the starting value and increasing, whereas perfusion in the absence of a liver showed a falling complement activity of 28.7%. ELISA demonstrated porcine immunoglobulin (Ig) G and IgM in the xenoperfused human plasma. Whereas in a previous study flow cytometry demonstrated porcine antibodies specific for antigens on human T lymphocytes, in this study, anti-human RBC antibodies were not found. Xenoperfused human plasma did not lyse fresh human RBC. Human complement was consistently more efficient at lysing porcine RBC than was porcine complement at lysing human RBC, and human plasma inhibited the ability of porcine plasma to lyse human RBC, raising the possibility of cross-species complement regulation. Complement regulatory proteins on human RBC were blocked using mouse monoclonal anti-human CD59 and DAF. Blocking CD59, but not DAF, augmented lysis of human RBC by porcine complement. CONCLUSIONS Human CD59 inhibits porcine complement. The production of porcine complement from xenoperfused porcine livers is unlikely to result in clinically significant injury mediated through the classical pathway of complement activation.
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Affiliation(s)
- Michael A Rees
- Department of Surgery, University of Cambridge, Addenbrooke's Hospital, Cambridge, Cambridgeshire, United Kingdom.
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Affiliation(s)
- Megan Sykes
- Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA.
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