1
|
Wiseman A, Alhamad T, Alloway RR, Concepcion BP, Cooper M, Formica R, Klein CL, Kumar V, Leca N, Shihab F, Taber DJ, Mulnick S, Bushnell DM, Hadi M, Bunnapradist S. Use of LCP-Tacrolimus (LCPT) in Kidney Transplantation: A Delphi Consensus Survey of Expert Clinicians. Ann Transplant 2024; 29:e943498. [PMID: 38526543 PMCID: PMC10944009 DOI: 10.12659/aot.943498] [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] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/06/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND LCPT (Envarsus XR®) is a common once-daily, extended-release oral tacrolimus formulation used in kidney transplantation. However, there are minimal evidence-based recommendations regarding optimal dosing and treatment in the de novo and conversion settings. MATERIAL AND METHODS Using Delphi methodology, 12 kidney transplantation experts with LCPT experience reviewed available data to determine potential consensus topics. Key statements regarding LCPT use were generated and disseminated to the panel in an online Delphi survey. Statements were either accepted, revised, or rejected based on the level of consensus, perceived strength of evidence, and alignment with clinical practice. Consensus was defined a priori as ≥75% agreement. RESULTS Twenty-three statements were generated: 14 focused on de novo LCPT use and 9 on general administration or LCPT conversion use. After 2 rounds, consensus was achieved for 11/14 of the former and 7/9 of the latter statements. In a de novo setting, LCPT was recognized as a first-line option based on its safety and efficacy compared to immediate-release tacrolimus. In particular, African Americans and rapid metabolizer populations were identified as preferred for first-line LCPT therapy. In a conversion setting, full consensus was achieved for converting to LCPT to address neurological adverse effects related to immediate-release tacrolimus and for the time required (approximately 7 days) for steady-state LCPT trough levels to be reached. CONCLUSIONS When randomized clinical trials do not replicate current utilization patterns, the Delphi process can successfully generate consensus statements by expert clinicians to inform clinical decision-making for the use of LCPT in kidney transplant recipients.
Collapse
Affiliation(s)
- Alexander Wiseman
- AdventHealth Transplant Institute, Porter Adventist Hospital, Denver, CO, USA
| | - Tarek Alhamad
- Division of Nephrology, Washington University School of Medicine in St. Louis, Saint Louis, MO, USA
| | - Rita R. Alloway
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | | | - Matthew Cooper
- Transplant Center – Center for Advanced Care – Froedtert Hospital, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Richard Formica
- Yale New Haven Transplantation Center, Yale University School of Medicine, New Haven, CT, USA
| | - Christina L. Klein
- Department of Transplant Nephrology, Piedmont Transplant Institute, Atlanta, GA, USA
| | - Vineeta Kumar
- Renal Transplant Program, University of Alabama at Birmingham Hospital, Birmingham, AL, USA
| | - Nicolae Leca
- Kidney Care and Transplantation Services, University of Washington, Seattle, WA, USA
| | - Fuad Shihab
- Kidney and Liver Clinic, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - David J. Taber
- Transplant Immunobiology Laboratory, Medical University of South Carolina, Charleston, SC, USA
| | - Sarah Mulnick
- Patient-Centered Research, Evidera, Bethesda, MD, USA
| | | | - Monica Hadi
- Patient-Centered Research, Evidera, London, United Kingdom
| | - Suphamai Bunnapradist
- Division of Nephrology and Department of Medicine, David Geffen School of Medicine, Los Angeles, CA, USA
| |
Collapse
|
2
|
Lichvar AB, Chandran MM, Cohen EA, Crowther BR, Doligalski CT, Condon Martinez AJ, Potter LMM, Taber DJ, Alloway RR. The expanded role of the transplant pharmacist: A 10-year follow-up. Am J Transplant 2023; 23:1375-1387. [PMID: 37146942 DOI: 10.1016/j.ajt.2023.04.032] [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] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/02/2023] [Accepted: 04/30/2023] [Indexed: 05/07/2023]
Abstract
The role of the transplant pharmacist is recognized by transplant programs, governmental groups, and professional organizations as an essential part of the transplant multidisciplinary team. This role has evolved drastically over the last decade with the advent of major advances in the science of transplantation and the growth of the field, which necessitate expanded pharmacy services to meet the needs of patients. Data now exist within all realms of the phases of care for a transplant recipient regarding the utility and benefit of a solid organ transplant (SOT) pharmacist. Furthermore, governing bodies now have the opportunity to use Board Certification in Solid Organ Transplant Pharmacotherapy as a mechanism to identify and recognize specialty knowledge and expertise within the field of SOT pharmacotherapy. The purpose of this paper is to provide an overarching review of the current and future state of SOT pharmacy while also identifying major changes to the profession, forthcoming challenges, and expected areas of growth.
Collapse
Affiliation(s)
- Alicia Beth Lichvar
- Center for Transplantation, University of California San Diego Health, La Jolla, California, USA.
| | | | - Elizabeth A Cohen
- Department of Transplantation, Yale New Haven Hospital, New Haven, Connecticut, USA
| | - Barrett R Crowther
- Department of Pharmacy, University of Colorado Health, Aurora, Colorado, USA
| | | | | | - Lisa M M Potter
- Department of Pharmacy, University of Chicago Medicine, Chicago, Illinois, USA
| | - David J Taber
- Division of Transplantation, Department of Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| |
Collapse
|
3
|
Shi T, Burg AR, Caldwell JT, Roskin KM, Castro-Rojas CM, Chukwuma PC, Gray GI, Foote SG, Alonso JA, Cuda CM, Allman DA, Rush JS, Regnier CH, Wieczorek G, Alloway RR, Shields AR, Baker BM, Woodle ES, Hildeman DA. Single cell transcriptomic analysis of renal allograft rejection reveals insights into intragraft TCR clonality. J Clin Invest 2023:170191. [PMID: 37227784 DOI: 10.1172/jci170191] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Bulk analysis of renal allograft biopsies (rBx) identified RNA transcripts associated with acute cellular rejection (ACR); however, these lacked cellular context critical to mechanistic understanding of how rejection occurs despite immunosuppression (IS). We performed combined single cell RNA transcriptomic and TCRα/β sequencing on rBx from patients with ACR under differing IS: tacrolimus, iscalimab, and belatacept. We found distinct CD8+ T cell phenotypes (e.g., effector, memory, exhausted) depending upon IS type, particularly within clonally expanded cells (CD8EXP). Gene expression of CD8EXP identified therapeutic targets that were influenced by IS type. TCR analysis revealed a highly restricted number of CD8EXP, independent of HLA mismatch or IS type. Subcloning of TCRα/β cDNAs from CD8EXP into Jurkat76 cells (TCR-/-) conferred alloreactivity by mixed lymphocyte reaction. Analysis of sequential rBx samples revealed persistence of CD8EXP that decreased, but were not eliminated, after successful anti-rejection therapy. In contrast, CD8EXP were maintained in treatment-refractory rejection. Finally, most rBx-derived CD8EXP were also observed in matching urine samples, providing precedent for using urine-derived CD8EXP as a surrogate for those found in the rejecting allograft. Overall, our data define the clonal CD8+ T cell response to ACR, paving the next steps to improve detection, assessment, and treatment of rejection.
Collapse
Affiliation(s)
- Tiffany Shi
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - Ashley R Burg
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - J Timothy Caldwell
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - Krishna M Roskin
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - Cyd M Castro-Rojas
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - P Chukwunalu Chukwuma
- Department of Chemistry and Biochemistry and the Harper Cancer Research Ins, University of Notre Dame, South Bend, United States of America
| | - George I Gray
- Department of Chemistry and Biochemistry and the Harper Cancer Research Ins, University of Notre Dame, South Bend, United States of America
| | - Sara G Foote
- Department of Chemistry and Biochemistry and the Harper Cancer Research Ins, University of Notre Dame, South Bend, United States of America
| | - Jesus A Alonso
- Department of Chemistry and Biochemistry and the Harper Cancer Research Ins, University of Notre Dame, South Bend, United States of America
| | - Carla M Cuda
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - David A Allman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, United States of America
| | - James S Rush
- Immunology Disease Area, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Catherine H Regnier
- Immunology Disease Area, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Grazyna Wieczorek
- Immunology Disease Area, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Rita R Alloway
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, United States of America
| | - Adele R Shields
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, United States of America
| | - Brian M Baker
- Department of Chemistry and Biochemistry and the Harper Cancer Research Ins, University of Notre Dame, South Bend, United States of America
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, United States of America
| | - David A Hildeman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| |
Collapse
|
4
|
Kim MH, Sise ME, Xu M, Goldberg DS, Fontana RJ, Kort JJ, Alloway RR, Durand CM, Brown RS, Levitsky J, Gustafson JL, Reese PP, Chung RT. Early initiation of glecaprevir/pibrentasvir after transplantation of HCV-viremic kidneys into HCV-negative recipients is associated with normalization in the altered inflammatory milieu. Clin Transplant 2023; 37:e14926. [PMID: 36752566 PMCID: PMC10951469 DOI: 10.1111/ctr.14926] [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: 12/19/2022] [Revised: 01/04/2023] [Accepted: 01/26/2023] [Indexed: 02/09/2023]
Abstract
Our previous Multicenter Trial to Transplant HCV-infected Kidneys (MYTHIC) observed that 100% of hepatitis C virus (HCV)-uninfected patients who received a kidney from an HCV-infected deceased donor were cured of HCV with an 8-week regimen of glecaprevir and pibrentasvir (G/P) initiated 2-5 days after transplantation. Following acute and chronic infection with HCV, immune system perturbations have been reported to persist even after viral clearance. The aim of this study was to determine whether HCV viremic kidney recipients in the MYTHIC study experience sustained changes in the soluble inflammatory milieu associated with HCV infection. Among nine patients with HCV viremia at day 3 post-kidney transplant (post-KT D3), IP-10, IL-10, MIP-1β, and IL-8 were significantly elevated from baseline. However, over the subsequent visits, there was a rapid, dramatic reduction back to baseline levels. Among seven patients who were not HCV viremic at post-KT D3, the cytokine levels did not significantly change. HCV-uninfected patients who received a kidney from an HCV-viremic deceased donor and were treated with early G/P experienced only transient alterations in the soluble inflammatory milieu. These data provide reassuring evidence that there appear to be no persistent cytokine disturbances with transient HCV viremia accompanying HCV donor positive/recipient negative kidney transplant.
Collapse
Affiliation(s)
- Myung-Ho Kim
- Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Meghan E. Sise
- Nephrology Division, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Min Xu
- Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - David S. Goldberg
- Division of Digestive Health & Liver Diseases, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Robert J. Fontana
- Division of Gastroenterology & Hepatology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jens J. Kort
- Global Medical Affairs Research & Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Rita R. Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Christine M. Durand
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Robert S. Brown
- Division of Gastroenterology & Hepatology, Weill Cornell Medicine, New York, New York, USA
| | - Josh Levitsky
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Jenna L. Gustafson
- Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Peter P. Reese
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Renal-Electrolyte and Hypertension Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Raymond T. Chung
- Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
5
|
Rossi AP, Tremblay S, Castro-Rojas CM, Burg AA, Roskin KM, Gehman JM, Rike-Shields A, Alloway RR, Brailey P, Allman D, Hildeman DA, Woodle ES. Effects of invivo CXCR4 Blockade and Proteasome Inhibition on Bone Marrow Plasma Cells in HLA-Sensitized Kidney Transplant Candidates. Am J Transplant 2023:S1600-6135(23)00307-6. [PMID: 36871629 DOI: 10.1016/j.ajt.2023.02.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 01/10/2023] [Revised: 02/14/2023] [Accepted: 02/24/2023] [Indexed: 03/07/2023]
Abstract
To date, plasma cell (PC)-targeted therapies have been limited by suboptimal PC depletion and antibody rebound. We hypothesized this is partly because of PC residence in protective bone marrow (BM) microenvironments. The purpose of this proof-of-concept study was to examine the effects of the CXCR4 antagonist, plerixafor, on PC BM residence; its safety profile (alone and in combination with a proteasome inhibitor, bortezomib); and the transcriptional effect on BMPCs in HLA-sensitized kidney transplant candidates. Participants were enrolled into 3 groups: group A (n = 4), plerixafor monotherapy; and groups B (n = 4) and C (n = 4), plerixafor and bortezomib combinations. CD34+ stem cell and PC levels increased in the blood after plerixafor treatment. PC recovery from BM aspirates varied depending on the dose of plerixafor and bortezomib. Single-cell RNA sequencing on BMPCs from 3 group C participants pretreatment and posttreatment revealed multiple populations of PCs, with a posttreatment enrichment of oxidative phosphorylation, proteasome assembly, cytoplasmic translation, and autophagy-related genes. Murine studies demonstrated dually inhibiting the proteasome and autophagy resulted in greater BMPC death than did monotherapies. In conclusion, this pilot study revealed anticipated effects of combined plerixafor and bortezomib on BMPCs, an acceptable safety profile, and suggests the potential for autophagy inhibitors in desensitization regimens.
Collapse
Affiliation(s)
- Amy P Rossi
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Simon Tremblay
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Cyd M Castro-Rojas
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ashley A Burg
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Krishna M Roskin
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Jenna M Gehman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Adele Rike-Shields
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; The Christ Hospital, Cincinnati, Ohio, USA
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Paul Brailey
- Transplant Immunology Division, Hoxworth Blood Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - David Allman
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David A Hildeman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
| |
Collapse
|
6
|
Shi T, Burg AR, Caldwell JT, Roskin K, Castro-Rojas CM, Chukwuma PC, Gray GI, Foote SG, Alonso J, Cuda CM, Allman DA, Rush JS, Regnier CH, Wieczorek G, Alloway RR, Shields AR, Baker BM, Woodle ES, Hildeman DA. Single cell transcriptomic analysis of renal allograft rejection reveals novel insights into intragraft TCR clonality. bioRxiv 2023:2023.02.08.524808. [PMID: 36798151 PMCID: PMC9934650 DOI: 10.1101/2023.02.08.524808] [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] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Bulk analysis of renal allograft biopsies (rBx) identified RNA transcripts associated with acute cellular rejection (ACR); however, these lacked cellular context critical to mechanistic understanding. We performed combined single cell RNA transcriptomic and TCRα/β sequencing on rBx from patients with ACR under differing immunosuppression (IS): tacrolimus, iscalimab, and belatacept. TCR analysis revealed a highly restricted CD8 + T cell clonal expansion (CD8 EXP ), independent of HLA mismatch or IS type. Subcloning of TCRα/β cDNAs from CD8 EXP into Jurkat76 cells (TCR -/- ) conferred alloreactivity by mixed lymphocyte reaction. scRNAseq analysis of CD8 EXP revealed effector, memory, and exhausted phenotypes that were influenced by IS type. Successful anti-rejection treatment decreased, but did not eliminate, CD8 EXP , while CD8 EXP were maintained during treatment-refractory rejection. Finally, most rBx-derived CD8 EXP were also observed in matching urine samples. Overall, our data define the clonal CD8 + T cell response to ACR, providing novel insights to improve detection, assessment, and treatment of rejection.
Collapse
|
7
|
Sise ME, Goldberg DS, Schaubel DE, Fontana RJ, Kort JJ, Alloway RR, Durand CM, Blumberg EA, Woodle ES, Sherman KE, Brown RS, Friedewald JJ, Desai NM, Sultan ST, Levitsky J, Lee MD, Strohbehn IA, Landis JR, Fernando M, Gustafson JL, Chung RT, Reese PP. One-Year Outcomes of the Multi-Center StudY to Transplant Hepatitis C-InfeCted kidneys (MYTHIC) Trial. Kidney Int Rep 2022; 7:241-250. [PMID: 35155863 PMCID: PMC8820987 DOI: 10.1016/j.ekir.2021.11.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 12/29/2022] Open
Abstract
Introduction Transplanting kidneys from hepatitis C virus (HCV) viremic donors into HCV-negative patients (HCV D-RNA-positive/R-negative) has evolved from experimental to “standard-of-care” at many centers. Nevertheless, most data derive from single centers and provide only short-term follow-up. Methods The Multicenter Study to Transplant Hepatitis C-Infected Kidneys (MYTHIC) study was a multicenter (7 sites) trial of HCV D-RNA-positive/R-negative kidney transplantation (KT) followed by 8 weeks of glecaprevir/pibrentasvir (G/P) initiated 2 to 5 days post-KT. Prespecified outcomes included probability of KT (vs. matched waitlist comparators) and 1-year safety outcomes, allograft function, and survival. Results Among 63 enrolled patients, 1-year cumulative incidence of KT was approximately 3.5-fold greater for the MYTHIC cohort versus 2055 matched United Network for Organ Sharing (UNOS) comparators who did not opt-in to receive a kidney from an HCV-viremic donor (68% vs. 19%, P < 0.0001). Of 30 HCV D-RNA-positive/R-negative KT recipients, all achieved HCV cure. None developed clinically significant liver disease or HCV-related kidney injury. Furthermore, 1-year survival was 93% and 1-year graft function was excellent (median creatinine 1.17; interquartile range [IQR]: 1.02–1.38 mg/dl). There were 4 cases of cytomegalovirus (CMV) disease among 10 CMV-negative patients transplanted with a kidney from an HCV-viremic/CMV-positive donor. Conclusion The 1-year findings from this multicenter trial suggest that opting-in for HCV-viremic KT offers can increase probability of KT with excellent 1-year outcomes. Trial Registration: NCT03781726
Collapse
|
8
|
Rossi AP, Alloway RR, Hildeman D, Woodle ES. Plasma cell biology: Foundations for targeted therapeutic development in transplantation. Immunol Rev 2021; 303:168-186. [PMID: 34254320 DOI: 10.1111/imr.13011] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/22/2021] [Indexed: 12/20/2022]
Abstract
Solid organ transplantation is a life-saving procedure for patients with end-stage organ disease. Over the past 70 years, tremendous progress has been made in solid organ transplantation, particularly in T-cell-targeted immunosuppression and organ allocation systems. However, humoral alloimmune responses remain a major challenge to progress. Patients with preexisting antibodies to human leukocyte antigen (HLA) are at significant disadvantages in regard to receiving a well-matched organ, moreover, those who develop anti-HLA antibodies after transplantation face a significant foreshortening of renal allograft survival. Historical therapies to desensitize patients prior to transplantation or to treat posttransplant AMR have had limited effectiveness, likely because they do not significantly reduce antibody levels, as plasma cells, the source of antibody production, remain largely unaffected. Herein, we will discuss the significance of plasma cells in transplantation, aspects of their biology as potential therapeutic targets, clinical challenges in developing strategies to target plasma cells in transplantation, and lastly, novel approaches that have potential to advance the field.
Collapse
Affiliation(s)
- Amy P Rossi
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - David Hildeman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| |
Collapse
|
9
|
Eckman MH, Adejare AA, Duncan H, Woodle ES, Thakar CV, Alloway RR, Sherman KE. Incorporating Patients' Values and Preferences Into Decision Making About Transplantation of HCV-Naïve Recipients With Kidneys From HCV-Viremic Donors: A Feasibility Study. MDM Policy Pract 2021; 6:23814683211056537. [PMID: 34734119 PMCID: PMC8558609 DOI: 10.1177/23814683211056537] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/05/2021] [Indexed: 11/16/2022] Open
Abstract
Introduction. While use of (hepatitis C virus) HCV-viremic kidneys may result in net benefit for the average end-stage kidney disease (ESKD) patient awaiting transplantation, patients may have different values for ESKD-related health states. Thus, the best decision for any individual may be different depending on the balance of these factors. Our objective was to explore the feasibility of sampling health utilities from hemodialysis patients in order to perform patient-specific decision analyses considering various transplantation strategies. Study Design. We assessed utilities on a convenience sample of hemodialysis patients for health states including hemodialysis, and transplantation with either an HCV-uninfected kidney or an HCV-viremic kidney. We performed patient-specific decision analyses using each patient's age, race, gender, dialysis vintage, and utilities. We used a Markov state transition model considering strategies of continuing hemodialysis, transplantation with an HCV-unexposed kidney, and transplantation with an HCV-viremic kidney and HCV treatment. We interviewed 63 ESKD patients from four dialysis centers (Dialysis Clinic Inc., DCI) in the Cincinnati metropolitan area. Results. Utilities for ESKD-related health states varied widely from patient to patient. Mean values were highest for -transplantation with an HCV-uninfected kidney (0.89, SD: 0.18), and were 0.825 (SD: 0.231) and 0.755 (SD: 0.282), respectively, for hemodialysis and transplantation with an HCV-viremic kidney. Patient-specific decision analyses indicated 37 (59%) of the 63 ESKD patients in the cohort would have a net gain in quality-adjusted life years from transplantation of an HCV-viremic kidney, while 26 would have a net loss. Conclusions. It is feasible to gather dialysis patients' health state utilities and perform personalized decision analyses. This approach could be used in the future to guide shared decision-making discussions about transplantation strategies for ESKD patients.
Collapse
Affiliation(s)
- Mark H. Eckman
- Division of General Internal Medicine and the Center for Clinical Effectiveness, University of Cincinnati, Cincinnati, Ohio
| | - Adeboye A. Adejare
- Department of Biomedical Informatics, University of Cincinnati, Cincinnati, Ohio
| | - Heather Duncan
- Division of Nephrology, University of Cincinnati, Cincinnati, Ohio
| | - E. Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| | | | - Rita R. Alloway
- Division of Nephrology, University of Cincinnati, Cincinnati, Ohio
| | - Kenneth E. Sherman
- Division of Digestive Diseases, University of Cincinnati, Cincinnati, Ohio
| |
Collapse
|
10
|
Jorgenson MR, Descourouez JL, Brady BL, Chandran MM, Do V, Kim M, Laub MR, Lichvar A, Park JM, Szczepanik A, Alloway RR. A call for transplant stewardship: The need for expanded evidence-based evaluation of induction and biologic-based cost-saving strategies in kidney transplantation and beyond. Clin Transplant 2021; 35:e14372. [PMID: 34033140 DOI: 10.1111/ctr.14372] [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: 03/17/2021] [Revised: 05/15/2021] [Accepted: 05/19/2021] [Indexed: 12/14/2022]
Abstract
Rising expenditures threaten healthcare sustainability. While transplant programs are typically considered profitable, transplant medications are expensive and frequently targeted for cost savings. This review aims to summarize available literature supporting cost-containment strategies used in solid organ transplant. Despite widespread use of these tactics, we found the available evidence to be fairly low quality. Strategies mainly focus on induction, particularly rabbit antithymocyte globulin (rATG), given its significant cost and the lack of consensus surrounding dosing. While there is higher-quality evidence for high single-dose rATG, and dose-rounding protocols to reduce waste are likely low risk, more aggressive strategies, such as dosing rATG by CD3+ target-attainment or on ideal-body-weight, have less robust support and did not always attain similar efficacy outcomes. Extrapolation of induction dosing strategies to rejection treatment is not supported by any currently available literature. Cost-saving strategies for supportive therapies, such as IVIG and rituximab also have minimal literature support. Deferral of high-cost agents to the outpatient arena is associated with minimal risk and increases reimbursement, although may increase complexity and cost-burden for patients and infusion centers. The available evidence highlights the need for evaluation of unique patient-specific clinical scenarios and optimization of therapies, rather than simple blanket application of cost-saving initiatives in the transplant population.
Collapse
Affiliation(s)
- Margaret R Jorgenson
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, WI, USA
| | - Jillian L Descourouez
- Department of Pharmacy, University of Wisconsin Hospital and Clinics, Madison, WI, USA
| | - Bethany L Brady
- Department of Pharmacy, Indiana University Health University Hospital, Indianapolis, IN, USA
| | - Mary M Chandran
- Department of Pharmacy, Children's Hospital of Colorado, Aurora, CO, USA
| | - Vincent Do
- Department of Pharmacy, Yale New Haven Hospital, New Haven, CT, USA
| | - Miae Kim
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Melissa R Laub
- Department of Pharmacy, Augusta University Medical Center, Augusta, GA, USA
| | - Alicia Lichvar
- Department of Pharmacy Practice and Surgery, University of Illinois at Chicago, Chicago, IL, USA
| | - Jeong M Park
- Department of Clinical Pharmacy, University of Michigan College of Pharmacy, Ann Arbor, MI, USA
| | - Amanda Szczepanik
- Department of Pharmacy, University of Maryland Medical Center, Baltimore, MD, USA
| | - Rita R Alloway
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| |
Collapse
|
11
|
Karpen SR, Klein A, Alloway RR, Albrecht R, Belen O, Campbell M, Kluetz P, Minasian LM, Mitchell SA, O'Doherty I, Papadopoulos E, Sapir-Pichhadze R, Spear N, van Gelder T, Velidedeoglu E, Page CA, Everly MJ. The Role of Patient-reported Outcomes and Medication Adherence Assessment in Patient-focused Drug Development for Solid Organ Transplantation. Transplantation 2021; 105:941-944. [PMID: 33901129 DOI: 10.1097/tp.0000000000003556] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | | | - Rita R Alloway
- Division of Nephrology, University of Cincinnati College of Medicine, Cincinnati, OH
| | | | - Ozlem Belen
- U.S. Food and Drug Administration, Silver Spring, MD
| | | | - Paul Kluetz
- U.S. Food and Drug Administration, Silver Spring, MD
| | - Lori M Minasian
- National Institutes of Health, National Cancer Institute, Bethesda, MD
| | - Sandra A Mitchell
- National Institutes of Health, National Cancer Institute, Bethesda, MD
| | | | | | | | | | - Teun van Gelder
- Departments of Hospital Pharmacy and Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - C Alex Page
- University of Arizona College of Pharmacy, Tucson, AZ
| | | |
Collapse
|
12
|
Sise ME, Goldberg DS, Kort JJ, Schaubel DE, Alloway RR, Durand CM, Fontana RJ, Brown RS, Friedewald JJ, Prenner S, Landis JR, Fernando M, Phillips CC, Woodle ES, Rike-Shields A, Sherman KE, Elias N, Williams WW, Gustafson JL, Desai NM, Barnaba B, Norman SP, Doshi M, Sultan ST, Aull MJ, Levitsky J, Belshe DS, Chung RT, Reese PP. Multicenter Study to Transplant Hepatitis C-Infected Kidneys (MYTHIC): An Open-Label Study of Combined Glecaprevir and Pibrentasvir to Treat Recipients of Transplanted Kidneys from Deceased Donors with Hepatitis C Virus Infection. J Am Soc Nephrol 2020; 31:2678-2687. [PMID: 32843477 DOI: 10.1681/asn.2020050686] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [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: 05/19/2020] [Accepted: 07/06/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Single-center trials and retrospective case series have reported promising outcomes using kidneys from donors with hepatitis C virus (HCV) infection. However, multicenter trials are needed to determine if those findings are generalizable. METHODS We conducted a prospective trial at seven centers to transplant 30 kidneys from deceased donors with HCV viremia into HCV-uninfected recipients, followed by 8 weeks of once-daily coformulated glecaprevir and pibrentasvir, targeted to start 3 days posttransplant. Key outcomes included sustained virologic response (undetectable HCV RNA 12 weeks after completing treatment with glecaprevir and pibrentasvir), adverse events, and allograft function. RESULTS We screened 76 patients and enrolled 63 patients, of whom 30 underwent kidney transplantation from an HCV-viremic deceased donor (median kidney donor profile index, 53%) in May 2019 through October 2019. The median time between consent and transplantation of a kidney from an HCV-viremic donor was 6.3 weeks. All 30 recipients achieved a sustained virologic response. One recipient died of complications of sepsis 4 months after achieving a sustained virologic response. No severe adverse events in any patient were deemed likely related to HCV infection or treatment with glecaprevir and pibrentasvir. Three recipients developed acute cellular rejection, which was borderline in one case. Three recipients developed polyomavirus (BK) viremia near or >10,000 copies/ml that resolved after reduction of immunosuppression. All recipients had good allograft function, with a median creatinine of 1.2 mg/dl and median eGFR of 57 ml/min per 1.73 m2 at 6 months. CONCLUSIONS Our multicenter trial demonstrated safety and efficacy of transplantation of 30 HCV-viremic kidneys into HCV-negative recipients, followed by early initiation of an 8-week regimen of glecaprevir and pibrentasvir.
Collapse
Affiliation(s)
- Meghan E Sise
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - David S Goldberg
- Division of Digestive Health and Liver Diseases, University of Miami Miller School of Medicine, Miami, Florida
| | - Jens J Kort
- Global Medical Affairs Research and Development, AbbVie Inc., North Chicago, Illinois
| | - Douglas E Schaubel
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Christine M Durand
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Robert J Fontana
- Division of Gastroenterology and Hepatology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Robert S Brown
- Division of Gastroenterology and Hepatology, Weill Cornell Medicine, New York, New York
| | - John J Friedewald
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Stacey Prenner
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - J Richard Landis
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Melissa Fernando
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Caitlin C Phillips
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Adele Rike-Shields
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio.,The Christ Hospital, Cincinnati, Ohio
| | - Kenneth E Sherman
- Division of Digestive Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Nahel Elias
- Transplant Center and Division of Transplant Surgery, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts
| | - Winfred W Williams
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Jenna L Gustafson
- Gastrointestinal Division, Department of Medicine, Liver Center, Massachusetts General Hospital, Boston, Massachusetts
| | - Niraj M Desai
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Brittany Barnaba
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Silas P Norman
- Division of Nephrology, Michigan Medicine, Ann Arbor, Michigan
| | - Mona Doshi
- Division of Nephrology, Michigan Medicine, Ann Arbor, Michigan
| | - Samuel T Sultan
- Division of Transplant Surgery, New York-Presbyterian/Weill Cornell Medicine, New York, New York
| | - Meredith J Aull
- Division of Transplant Surgery, New York-Presbyterian/Weill Cornell Medicine, New York, New York
| | - Josh Levitsky
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois.,Division of Gastroenterology and Hepatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Dianne S Belshe
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Raymond T Chung
- Gastrointestinal Division, Department of Medicine, Liver Center, Massachusetts General Hospital, Boston, Massachusetts
| | - Peter P Reese
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Renal-Electrolyte and Hypertension Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| |
Collapse
|
13
|
Woodle ES, Kaufman DB, Shields AR, Leone J, Matas A, Wiseman A, West-Thielke P, Sa T, King EC, Alloway RR. Belatacept-based immunosuppression with simultaneous calcineurin inhibitor avoidance and early corticosteroid withdrawal: A prospective, randomized multicenter trial. Am J Transplant 2020; 20:1039-1055. [PMID: 31680394 DOI: 10.1111/ajt.15688] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 07/12/2019] [Revised: 10/18/2019] [Accepted: 10/23/2019] [Indexed: 01/25/2023]
Abstract
Simultaneous calcineurin inhibitor avoidance (CNIA) and early corticosteroid withdrawal (ESW) have not been achieved primarily due to excessive acute rejection. This trial compared 2 belatacept-based CNIA/ESW regimens with a tacrolimus-based ESW regimen. Kidney transplant recipients were randomized to receive alemtuzumab/belatacept, rabbit anti-thymocyte globulin (rATG)/belatacept, or rATG/tacrolimus. The combinatorial primary endpoint consisted of patient death, renal allograft loss, or a Modification of Diet in Renal Disease-calculated eGFR of <45 mL/min/1.73 m2 at 12 months. Results are reported by treatment group (alemtuzumab/belatacept, rATG/belatacept, and rATG/tacrolimus). Superiority was not observed at 1 year for the primary endpoint (9/107 [8.4%], 15/104 [14.4%], and 14/105 [13.3%], respectively; P = NS) for either belatacept-based regimen. Differences were not observed for secondary endpoints (death, death-censored graft loss, or estimated glomerular filtration rates < 45 mL/min/1.73 m2 ). Differences were observed in biopsy-proved acute cellular rejection (10.3%, 18.3%, and 1.9%, respectively) (P < .001), but not in antibody-mediated rejection, mixed acute rejection, or de novo donor-specific anti-HLA antibodies. Neurologic and electrolyte abnormality adverse events were less frequent under belatacept. Belatacept-based CNIA/ESW regimens did not prove to be superior for the primary or secondary endpoints. Belatacept-treated patients demonstrated an increase in biopsy-proved acute cellular rejection and reduced neurologic and metabolic adverse events. These results demonstrate that simultaneous CNIA/ESW is feasible without excessive acute rejection.
Collapse
Affiliation(s)
- E Steve Woodle
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | - Adele R Shields
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | | | | | | | - Ting Sa
- Cincinnati Children's Hospital and Medical Center, Cincinnati, Ohio
| | - Eileen C King
- University of Cincinnati College of Medicine, Cincinnati, Ohio.,Cincinnati Children's Hospital and Medical Center, Cincinnati, Ohio
| | - Rita R Alloway
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | |
Collapse
|
14
|
Eckman MH, Woodle ES, Thakar CV, Alloway RR, Sherman KE. Cost-effectiveness of Using Kidneys From HCV-Viremic Donors for Transplantation Into HCV-Uninfected Recipients. Am J Kidney Dis 2020; 75:857-867. [PMID: 32081494 DOI: 10.1053/j.ajkd.2019.11.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 11/13/2019] [Indexed: 12/19/2022]
Abstract
RATIONALE & OBJECTIVE Less than 4% of patients with kidney failure receive kidney transplants. Although discard rates of hepatitis C virus (HCV)-viremic kidneys are declining, ~39% of HCV-viremic kidneys donated between 2018 and 2019 were discarded. Highly effective antiviral agents are now available to treat chronic HCV infection. Thus, our objective was to examine the cost-effectiveness of transplanting kidneys from HCV-viremic donors into HCV-uninfected recipients. STUDY DESIGN Markov state transition decision model. Data sources include Medline search results, bibliographies from relevant English language articles, Scientific Registry of Transplant Recipients, and the US Renal Data System. SETTING & POPULATION US patients receiving maintenance hemodialysis who are on kidney transplant waiting lists. INTERVENTION(S) Transplantation with an HCV-unexposed kidney versus transplantation with an HCV-viremic kidney and HCV treatment. OUTCOMES Effectiveness measured in quality-adjusted life-years and costs measured in 2018 US dollars. MODEL, PERSPECTIVE, AND TIMEFRAME We used a health care system perspective with a lifelong time horizon. RESULTS In the base-case analysis, transplantation with an HCV-viremic kidney was more effective and less costly than transplantation with an HCV-unexposed kidney because of the longer waiting times for HCV-unexposed kidneys, the substantial excess mortality risk while receiving dialysis, and the high efficacy of direct-acting antiviral agents for HCV infection. Transplantation with an HCV-viremic kidney was also preferred in sensitivity analyses of multiple model parameters. The strategy remained cost-effective unless waiting list time for an HCV-viremic kidney exceeded 3.1 years compared with the base-case value of 1.56 year. LIMITATIONS Estimates of waiting times for patients willing to accept an HCV-viremic kidney were based on data for patients who received HCV-viremic kidney transplants. CONCLUSIONS Transplanting kidneys from HCV-viremic donors into HCV-uninfected recipients increased quality-adjusted life expectancy and reduced costs compared with a strategy of transplanting kidneys from HCV-unexposed donors.
Collapse
Affiliation(s)
- Mark H Eckman
- Division of General Internal Medicine and the Center for Clinical Effectiveness, University of Cincinnati Medical Center, Cincinnati, OH.
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati Medical Center, Cincinnati, OH
| | - Charuhas V Thakar
- Division of Nephrology, University of Cincinnati Medical Center, Cincinnati, OH
| | - Rita R Alloway
- Division of Nephrology, University of Cincinnati Medical Center, Cincinnati, OH
| | - Kenneth E Sherman
- Division of Digestive Diseases, University of Cincinnati, Cincinnati, OH
| |
Collapse
|
15
|
Tremblay S, Driscoll JJ, Rike-Shields A, Hildeman DA, Alloway RR, Girnita AL, Brailey PA, Woodle ES. A prospective, iterative, adaptive trial of carfilzomib-based desensitization. Am J Transplant 2020; 20:411-421. [PMID: 31550069 PMCID: PMC7872208 DOI: 10.1111/ajt.15613] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [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: 05/19/2019] [Revised: 08/01/2019] [Accepted: 08/29/2019] [Indexed: 01/25/2023]
Abstract
Proteasome inhibitor-based strategies hold promise in transplant but have yielded varying results. Carfilzomib, a second-generation proteasome inhibitor, may possess advantages over bortezomib, the first-generation proteasome inhibitors. The purpose of this study was to evaluate the safety, toxicity, and preliminary efficacy of carfilzomib in highly HLA-sensitized kidney transplant candidates. Renal transplant candidates received escalating doses of carfilzomib followed by plasmapheresis (group A) or an identical regimen with additional plasmapheresis once weekly before carfilzomib dosing. Thirteen participants received carfilzomib, which was well tolerated with most adverse events classified as low grade. The safety profile was similar to bortezomib desensitization; however, neurotoxicity was not observed with carfilzomib. Toxicity resulted in permanent dose reduction in 1 participant but caused no withdrawals or deaths. HLA antibodies were substantially reduced with carfilzomib alone, and median maximal immunodominant antibody reduction was 72.8% (69.8% for group A, P = .031, 80.1% for group B, P = .938). After depletion, rebound occurred rapidly and antibody levels returned to baseline between days 81 and 141. Bone marrow studies revealed that approximately 69.2% of plasma cells were depleted after carfilzomib monotherapy. Carfilzomib monotherapy-based desensitization provides an acceptable safety and toxicity profile while leading to significant bone marrow plasma cell depletion and anti-HLA antibody reduction.
Collapse
Affiliation(s)
- Simon Tremblay
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| | - James J. Driscoll
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio,University of Cincinnati Cancer Institute, Cincinnati, Ohio
| | - Adele Rike-Shields
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio,The Christ Hospital, Cincinnati, Ohio
| | | | - Rita R. Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Alin L. Girnita
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio,Transplantation Immunology Division, Hoxworth Blood Center, Cincinnati, Ohio
| | - Paul A. Brailey
- Transplantation Immunology Division, Hoxworth Blood Center, Cincinnati, Ohio
| | - E. Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| |
Collapse
|
16
|
Leino AD, Emoto C, Fukuda T, Privitera M, Vinks AA, Alloway RR. Evidence of a clinically significant drug-drug interaction between cannabidiol and tacrolimus. Am J Transplant 2019; 19:2944-2948. [PMID: 31012522 DOI: 10.1111/ajt.15398] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [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: 02/02/2019] [Revised: 03/25/2019] [Accepted: 04/18/2019] [Indexed: 01/25/2023]
Abstract
Cannabidiol (CBD), a major purified nonpsychoactive component of cannabis with anticonvulsant properties, was approved by the U.S. Food and Drug Administration (FDA) in June 2018 as an adjuvant treatment for refractory epilepsy (Epidiolex; GW Pharmaceuticals). CBD is metabolized by cytochrome P450 (CYP)3A4 and CYP2C19 with a growing body of evidence suggesting it is also a potent inhibitor of these pathways. We report for the first time a significant drug-drug interaction between the purified CBD product and tacrolimus. A participant in a CBD clinical trial for epilepsy who was also receiving tacrolimus showed an approximately 3-fold increase in dose-normalized tacrolimus concentrations while receiving 2000-2900 mg/day of CBD. Our report delineates an important concern for the transplant community with the increasing legalization of cannabis and advent of an FDA-approved CBD product. Larger studies are needed to better understand the impact of this drug-drug interaction in solid organ transplant recipients.
Collapse
Affiliation(s)
- Abbie D Leino
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Chie Emoto
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Tsuyoshi Fukuda
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Michael Privitera
- Department of Neurology & Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Alexander A Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| |
Collapse
|
17
|
Alloway RR, Woodle ES, Abramowicz D, Segev DL, Castan R, Ilsley JN, Jeschke K, Somerville KT, Brennan DC. Rabbit anti-thymocyte globulin for the prevention of acute rejection in kidney transplantation. Am J Transplant 2019; 19:2252-2261. [PMID: 30838775 PMCID: PMC6767488 DOI: 10.1111/ajt.15342] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/01/2019] [Accepted: 02/19/2019] [Indexed: 01/25/2023]
Abstract
This report describes the results of 2 international randomized trials (total of 508 kidney transplant recipients). The primary objective was to assess the noninferiority of rabbit anti-thymocyte globulin (rATG, Thymoglobulin® ) versus interleukin-2 receptor antagonists (IL2RAs) for the quadruple endpoint (treatment failure defined as biopsy-proven acute rejection, graft loss, death, or loss to follow-up) to serve as the pivotal data for United States (US) regulatory approval of rATG. The pooled analysis provided an incidence of treatment failure of 25.1% in the rATG and 36.0% in the IL2RA treatment groups, an absolute difference of -10.9% (95% confidence interval [CI] -18.8% to -2.9%) supporting noninferiority (noninferiority margin was 10%) and superiority of rATG to IL2RA. In a meta-analysis of 7 trials comparing rATG with an IL2RA, the difference in the proportion of patients with BPAR at 12 months was -4.8% (95% CI -8.6% to -0.9%) in favor of rATG. In conclusion, a rigorous reanalysis of patient-level data from 2 prior randomized, controlled trials comparing rATG versus IL-2R monoclonal antibodies provided support for regulatory approval for rATG for induction therapy in renal transplant, making it the first T cell-depleting therapy approved for the prophylaxis of acute rejection in patients receiving a kidney transplant in the United States.
Collapse
Affiliation(s)
- Rita R. Alloway
- Division of Nephrology and HypertensionDepartment of Internal MedicineUniversity of CincinnatiCincinnatiOhio
| | - E. Steve Woodle
- Division of TransplantationDepartment of SurgeryUniversity of CincinnatiCincinnatiOhio
| | - Daniel Abramowicz
- Department of NephrologyUniversitair Ziekenhuis Antwerpen, and Antwerp UniversityEdegemBelgium
| | - Dorry L. Segev
- Department of SurgeryJohns Hopkins University School of MedicineBaltimoreMaryland
| | | | | | | | | | - Daniel C. Brennan
- Department of MedicineJohns Hopkins University School of MedicineBaltimoreMaryland
| |
Collapse
|
18
|
Dao A, Cuffy M, Kaiser TE, Loethen A, Cafardi J, Luckett K, Rike AH, Cardi M, Alloway RR, Govil A, Diwan T, Sherman KE, Shah SA, Woodle ES. Use of HCV Ab+/NAT- donors in HCV naïve renal transplant recipients to expand the kidney donor pool. Clin Transplant 2019; 33:e13598. [PMID: 31104346 DOI: 10.1111/ctr.13598] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 12/31/2018] [Revised: 04/18/2019] [Accepted: 05/09/2019] [Indexed: 12/24/2022]
Abstract
Hepatitis C (HCV) disease transmission from the use of HCV antibody-positive and HCV nucleic acid test-negative (HCV Ab+/NAT-) kidneys have been anecdotally reported to be absent. We prospectively analyzed kidney transplant (KT) outcomes from HCV Ab+/NAT- donors to HCV naïve recipients under T-cell depleting early steroid withdrawal immunosuppression. Allografts from 40 HCV Ab+/NAT- donors were transplanted to 52 HCV Ab- recipients between July 2016 and February 2018. Thirty-three (82.5%) of donors met Public Health Service (PHS) increased risk criteria. De novo HCV infection was detected at 3 months post-KT in one recipient (1.9%). This was a case of transmission from a HCV Ab+ NAT+ donor with an initial false-negative NAT completed using sample collected on donor hospital admission (day 2). At the time of HCV diagnosis, a stored donor sample collected during procurement (day 4) was tested and resulted NAT-positive. Subsequently, sustained virologic response (SVR) was achieved with 12 weeks of glecaprevir/pibrentasvir. One death with functioning graft at 261 days post-KT was determined not related to HCV or donor factors. This experience provides evidence of a low transmission rate of HCV from HCV Ab+/ NAT- kidney donors, thereby arguing for increasing utilization.
Collapse
Affiliation(s)
- Ann Dao
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | | | - Ashley Loethen
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | - Keith Luckett
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | | | - Rita R Alloway
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Amit Govil
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Tayyab Diwan
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | | - Shimul A Shah
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | | |
Collapse
|
19
|
Leino AD, King EC, Jiang W, Vinks AA, Klawitter J, Christians U, Woodle ES, Alloway RR, Rohan JM. Assessment of tacrolimus intrapatient variability in stable adherent transplant recipients: Establishing baseline values. Am J Transplant 2019; 19:1410-1420. [PMID: 30506623 DOI: 10.1111/ajt.15199] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [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: 09/17/2018] [Revised: 11/14/2018] [Accepted: 11/26/2018] [Indexed: 01/25/2023]
Abstract
The purpose of this study was to determine the intrapatient (within the same patient) variability of tacrolimus in adherent patients. Daily tacrolimus trough levels were obtained at home using dried blood spot technology in kidney and liver transplant recipients. Patients were randomized to receive 3 formulations of tacrolimus, each for two 1-week periods. Adherence was monitored by patient diary, pill counts, and use of the Medication Event Monitoring System (MEMS). Variability was quantified as the coefficient of variation (CV). Comparison of CV between groups was by independent t test or one-way ANOVA as appropriate. The population was found to be adherent with a rate of 99.9% with a mean interval between the evening and morning dose of tacrolimus of 11.86 hours. The median CV for the entire population was 15.2% (range 4.8%-110%). There were no differences in CV by allograft type or tacrolimus formulation. The multivariate analysis did not identify any demographic characteristics associated with a CV > 30%. In a highly adherent population, tacrolimus did not display high intrapatient variability. Given the association between IPV and poor allograft outcomes, future studies are needed to quantitate the influence of adherence and establish target IPV goals.
Collapse
Affiliation(s)
- Abbie D Leino
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Eileen C King
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Division of Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Wenlei Jiang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food & Drug Administration, Silver Spring, Maryland
| | - Alexander A Vinks
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jost Klawitter
- iC42 Clinical Research and Development, University of Colorado, Aurora, Colorado
| | - Uwe Christians
- iC42 Clinical Research and Development, University of Colorado, Aurora, Colorado
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jennifer M Rohan
- Division of Hematology and Oncology, Children's Hospital of Richmond, Richmond, Virginia
| |
Collapse
|
20
|
Lichvar A, Tremblay S, Naik D, Lipscomb J, King E, Vinks AA, Christians U, Alloway RR. Evaluation of Clinical and Safety Outcomes Following Uncontrolled Tacrolimus Conversion in Adult Transplant Recipients. Pharmacotherapy 2019; 39:564-575. [PMID: 30892704 DOI: 10.1002/phar.2260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE To compare clinical and safety outcomes of transplant recipients converted between different tacrolimus formulations to those patients who remained on a single formulation in an outpatient environment. METHODOLOGY This was a single-center, retrospective cohort study at a large tertiary care medical center with an associated institutional outpatient pharmacy system. Adult transplant recipients with institutional pharmacy refill from August 1, 2009, to May 31, 2016, were assessed. Patients were allocated into four separate groups: Group (A) innovator tacrolimus (no conversion), Group (B) generic tacrolimus (no conversion), Group (C) single conversion (from innovator to single generic or from generic to innovator tacrolimus), and Group (D) multiple conversions. Index date was either the date of first tacrolimus product conversion (Groups C and D) or a pre-specified post-transplant time (Groups A and B). RESULTS Overall, 100 patients were included in the analysis, 63% were male, 62% were Caucasian, and 59% were renal transplant recipients. When compared between groups, linear trends in dose-normalized tacrolimus levels were similar in the pre-index date period (p=0.52) and in the post-index date period (p=0.08). When groups were compared individually, linear trends in dose-normalized tacrolimus levels were significantly different pre- versus post-index date for Group B (p=0.008). There were no differences in the linear trends of dose-normalized tacrolimus levels across the other groups (p>0.05 for all). After the index date, 43% of patients across all groups required tacrolimus dose modification with no differences by group (p=0.32). Allograft function and hospitalizations were similar across all groups. CONCLUSIONS Conversion between tacrolimus generic formulations has been suggested to be unsafe. This study demonstrates that switching tacrolimus products in post-transplant recipients does not alter dose-normalized tacrolimus trough concentrations, renal or hepatic function, pathology, or hospitalizations.
Collapse
Affiliation(s)
- Alicia Lichvar
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| | - Simon Tremblay
- Department of Surgery, Division of Transplantation, University of Cincinnati, Cincinnati, OH.,Department of Environmental Health, Division of Epidemiology, University of Cincinnati, Cincinnati, OH
| | - Devanshi Naik
- University of Cincinnati, James L. Winkle College of Pharmacy, Cincinnati, Ohio
| | - Jessi Lipscomb
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Eileen King
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Alexander A Vinks
- Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Uwe Christians
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Denver, Colorado
| | - Rita R Alloway
- Department of Surgery, Division of Transplantation, University of Cincinnati, Cincinnati, OH
| |
Collapse
|
21
|
Emoto C, Johnson TN, Hahn D, Christians U, Alloway RR, Vinks AA, Fukuda T. A Theoretical Physiologically-Based Pharmacokinetic Approach to Ascertain Covariates Explaining the Large Interpatient Variability in Tacrolimus Disposition. CPT Pharmacometrics Syst Pharmacol 2019; 8:273-284. [PMID: 30843669 PMCID: PMC6539708 DOI: 10.1002/psp4.12392] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/23/2019] [Indexed: 12/19/2022]
Abstract
Physiologically‐based pharmacokinetic (PBPK) modeling allows assessment of the covariates contributing to the large pharmacokinetic (PK) variability of tacrolimus; these include multiple physiological and biochemical differences among patients. A PBPK model of tacrolimus was developed, including a virtual population with physiological parameter distributions reflecting renal transplant patients. The ratios of predicted to observed dose‐normalized maximum plasma concentration (Cmax), 0–12‐hour area under the concentration–time curve (AUC0–12 hour), and trough plasma concentration (Ctrough) ranged from 0.92‐fold to 1.15‐fold, indicating good predictive performance. The model quantitatively indicated the impact of cytochrome P450 (CYP)3A4 abundance, hematocrit, and serum albumin levels, in addition to CYP3A5 genotype status, on tacrolimus PK and associated variability. Age‐dependent change in tacrolimus trough concentration in pediatric patients was mainly attributed to the CYP3A ontogeny profile. This study demonstrates the utility of PBPK modeling as a tool for mechanistic and quantitative assessment of the impact of patient physiological differences on observed large PK variability.
Collapse
Affiliation(s)
- Chie Emoto
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | - David Hahn
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Uwe Christians
- iC42 Clinical Research and Development, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rita R Alloway
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Alexander A Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Tsuyoshi Fukuda
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| |
Collapse
|
22
|
Kim Y, Jung AD, Dhar VK, Tadros JS, Schauer DP, Smith EP, Hanseman DJ, Cuffy MC, Alloway RR, Shields AR, Shah SA, Woodle ES, Diwan TS. Laparoscopic sleeve gastrectomy improves renal transplant candidacy and posttransplant outcomes in morbidly obese patients. Am J Transplant 2018; 18:410-416. [PMID: 28805345 DOI: 10.1111/ajt.14463] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [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: 06/05/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 01/25/2023]
Abstract
Morbid obesity is a barrier to kidney transplantation due to inferior outcomes, including higher rates of new-onset diabetes after transplantation (NODAT), delayed graft function (DGF), and graft failure. Laparoscopic sleeve gastrectomy (LSG) increases transplant eligibility by reducing BMI in kidney transplant candidates, but the effect of surgical weight loss on posttransplantation outcomes is unknown. Reviewing single-center medical records, we identified all patients who underwent LSG before kidney transplantation from 2011-2016 (n = 20). Post-LSG kidney recipients were compared with similar-BMI recipients who did not undergo LSG, using 2:1 direct matching for patient factors. McNemar's test and signed-rank test were used to compare groups. Among post-LSG patients, mean BMI ± standard deviation (SD) was 41.5 ± 4.4 kg/m2 at initial encounter, which decreased to 32.3 ± 2.9 kg/m2 prior to transplantation (P < .01). No complications, readmissions, or mortality occurred following LSG. After transplantation, one patient (5%) experienced DGF, and no patients experienced NODAT. Allograft and patient survival at 1-year posttransplantation was 100%. Compared with non-LSG patients, post-LSG recipients had lower rates of DGF (5% vs 20%) and renal dysfunction-related readmissions (10% vs 27.5%) (P < .05 each). Perioperative complications, allograft survival, and patient survival were similar between groups. These data suggest that morbidly obese patients with end-stage renal disease who undergo LSG to improve transplant candidacy, achieve excellent posttransplantation outcomes.
Collapse
Affiliation(s)
- Y Kim
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - A D Jung
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - V K Dhar
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - J S Tadros
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - D P Schauer
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - E P Smith
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - D J Hanseman
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - M C Cuffy
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - R R Alloway
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - A R Shields
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - S A Shah
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - E S Woodle
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - T S Diwan
- Cincinnati Collaborative for Obesity Research (CCORE), Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| |
Collapse
|
23
|
Abu Jawdeh BG, Woodle ES, Leino AD, Brailey P, Tremblay S, Dorst T, Abdallah MH, Govil A, Byczkowski D, Misra H, Abuchowski A, Alloway RR. A phase Ib, open-label, single arm study to assess the safety, pharmacokinetics, and impact on humoral sensitization of SANGUINATE infusion in patients with end-stage renal disease. Clin Transplant 2017; 32. [DOI: 10.1111/ctr.13155] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Bassam G. Abu Jawdeh
- Division of Nephrology; Kidney C.A.R.E. Program; University of Cincinnati College of Medicine; Cincinnati OH USA
- Cincinnati VA Medical Center; Cincinnati OH USA
| | - Ervin Steve Woodle
- Division of Transplant Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Abbie D. Leino
- Division of Transplant Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Paul Brailey
- Transplant Immunology Division; Hoxworth Blood Center; Cincinnati OH USA
| | - Simon Tremblay
- Division of Transplant Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Tonya Dorst
- Division of Transplant Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Mouhamad H. Abdallah
- Division of Cardiovascular Health and Disease; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Amit Govil
- Division of Nephrology; Kidney C.A.R.E. Program; University of Cincinnati College of Medicine; Cincinnati OH USA
| | | | - Hemant Misra
- Prolong Pharmaceuticals; South Plainfield NJ USA
| | | | - Rita R. Alloway
- Division of Nephrology; Kidney C.A.R.E. Program; University of Cincinnati College of Medicine; Cincinnati OH USA
| |
Collapse
|
24
|
Alloway RR, Vinks AA, Fukuda T, Mizuno T, King EC, Zou Y, Jiang W, Woodle ES, Tremblay S, Klawitter J, Klawitter J, Christians U. Bioequivalence between innovator and generic tacrolimus in liver and kidney transplant recipients: A randomized, crossover clinical trial. PLoS Med 2017; 14:e1002428. [PMID: 29135993 PMCID: PMC5685573 DOI: 10.1371/journal.pmed.1002428] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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] [Received: 01/19/2017] [Accepted: 10/06/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Although the generic drug approval process has a long-term successful track record, concerns remain for approval of narrow therapeutic index generic immunosuppressants, such as tacrolimus, in transplant recipients. Several professional transplant societies and publications have generated skepticism of the generic approval process. Three major areas of concern are that the pharmacokinetic properties of generic products and the innovator (that is, "brand") product in healthy volunteers may not reflect those in transplant recipients, bioequivalence between generic and innovator may not ensure bioequivalence between generics, and high-risk patients may have specific bioequivalence concerns. Such concerns have been fueled by anecdotal observations and retrospective and uncontrolled published studies, while well-designed, controlled prospective studies testing the validity of the regulatory bioequivalence testing approach for narrow therapeutic index immunosuppressants in transplant recipients have been lacking. Thus, the present study prospectively assesses bioequivalence between innovator tacrolimus and 2 generics in individuals with a kidney or liver transplant. METHODS AND FINDINGS From December 2013 through October 2014, a prospective, replicate dosing, partially blinded, randomized, 3-treatment, 6-period crossover bioequivalence study was conducted at the University of Cincinnati in individuals with a kidney (n = 35) or liver transplant (n = 36). Abbreviated New Drug Applications (ANDA) data that included manufacturing and healthy individual pharmacokinetic data for all generics were evaluated to select the 2 most disparate generics from innovator, and these were named Generic Hi and Generic Lo. During the 8-week study period, pharmacokinetic studies assessed the bioequivalence of Generic Hi and Generic Lo with the Innovator tacrolimus and with each other. Bioequivalence of the major tacrolimus metabolite was also assessed. All products fell within the US Food and Drug Administration (FDA) average bioequivalence (ABE) acceptance criteria of a 90% confidence interval contained within the confidence limits of 80.00% and 125.00%. Within-subject variability was similar for the area under the curve (AUC) (range 12.11-15.81) and the concentration maximum (Cmax) (range 17.96-24.72) for all products. The within-subject variability was utilized to calculate the scaled average bioequivalence (SCABE) 90% confidence interval. The calculated SCABE 90% confidence interval was 84.65%-118.13% and 80.00%-125.00% for AUC and Cmax, respectively. The more stringent SCABE acceptance criteria were met for all product comparisons for AUC and Cmax in both individuals with a kidney transplant and those with a liver transplant. European Medicines Agency (EMA) acceptance criteria for narrow therapeutic index drugs were also met, with the only exception being in the case of Brand versus Generic Lo, in which the upper limits of the 90% confidence intervals were 111.30% (kidney) and 112.12% (liver). These were only slightly above the upper EMA acceptance criteria limit for an AUC of 111.11%. SCABE criteria were also met for the major tacrolimus metabolite 13-O-desmethyl tacrolimus for AUC, but it failed the EMA criterion. No acute rejections, no differences in renal function in all individuals, and no differences in liver function were observed in individuals with a liver transplant using the Tukey honest significant difference (HSD) test for multiple comparisons. Fifty-two percent and 65% of all individuals with a kidney or liver transplant, respectively, reported an adverse event. The Exact McNemar test for paired categorical data with adjustments for multiple comparisons was used to compare adverse event rates among the products. No statistically significant differences among any pairs of products were found for any adverse event code or for adverse events overall. Limitations of this study include that the observations were made under strictly controlled conditions that did not allow for the impact of nonadherence or feeding on the possible pharmacokinetic differences. Generic Hi and Lo were selected based upon bioequivalence data in healthy volunteers because no pharmacokinetic data in recipients were available for all products. The safety data should be interpreted in light of the small number of participants and the short observation periods. Lastly, only the 1 mg tacrolimus strength was utilized in this study. CONCLUSIONS Using an innovative, controlled bioequivalence study design, we observed equivalence between tacrolimus innovator and 2 generic products as well as between 2 generic products in individuals after kidney or liver transplantation following current FDA bioequivalence metrics. These results support the position that bioequivalence for the narrow therapeutic index drug tacrolimus translates from healthy volunteers to individuals receiving a kidney or liver transplant and provides evidence that generic products that are bioequivalent with the innovator product are also bioequivalent to each other. TRIAL REGISTRATION ClinicalTrials.gov NCT01889758.
Collapse
Affiliation(s)
- Rita R. Alloway
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- * E-mail:
| | - Alexander A. Vinks
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Tsuyoshi Fukuda
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Tomoyuki Mizuno
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Eileen C. King
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Biostatistics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Yuanshu Zou
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Biostatistics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Wenlei Jiang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food & Drug Administration, Silver Spring, Maryland, United States of America
| | - E. Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Simon Tremblay
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Jelena Klawitter
- iC42 Clinical Research and Development, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Jost Klawitter
- iC42 Clinical Research and Development, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Uwe Christians
- iC42 Clinical Research and Development, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| |
Collapse
|
25
|
Tremblay S, Alloway RR. Clinical Evaluation of Modified Release and Immediate Release Tacrolimus Formulations. AAPS J 2017; 19:1332-1347. [PMID: 28717926 DOI: 10.1208/s12248-017-0119-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 06/27/2017] [Indexed: 12/21/2022]
Abstract
The science of drug delivery has evolved considerably and has led to the development of multiple sustained release formulations. Each of these formulations can present particular challenges in terms of clinical evaluation and necessitate careful study to identify their optimal use in practice. Tacrolimus is an immunosuppressive agent that is widely used in organ transplant recipients. However, it is poorly soluble, has an unpredictable pharmacokinetic profile subject to important genetic polymorphisms and drug-drug interactions, and has a narrow therapeutic index. For these reasons, it represents an agent that could benefit from modified release formulations to overcome these limitations. The objective of this review is to discuss the clinical evaluation of immediate and modified release tacrolimus formulations in renal transplant recipients. Clinical trials from early development of immediate release tacrolimus to formulation-specific post-marketing trials of modified release tacrolimus formulations are reviewed with an emphasis on key elements relating to trial design end endpoint assessment. Particular elements that can be addressed with formulation alterations, such as pharmacokinetics, pharmacogenomics, and toxicity and corresponding clinical evaluations are discussed. In addition, current knowledge gaps in the clinical evaluation of immediate and modified release tacrolimus formulations are discussed to highlight potential avenues for the future development of different tacrolimus formulations with outcomes relevant to the regulators, the transplant community, and to transplant recipients. This review shows that new formulations may alter tacrolimus bioavailability, alleviate certain adverse events while potentially enhancing patient convenience.
Collapse
Affiliation(s)
- Simon Tremblay
- Department of Surgery, Division of Transplantation, University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML0519, Cincinnati, OH, 45267, USA. .,Department of Environmental Health, Division of Epidemiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML0519, Cincinnati, OH, 45267, USA.
| | - Rita R Alloway
- Department of Internal Medicine, Division of Nephrology, Kidney C.A.R.E Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| |
Collapse
|
26
|
Tremblay S, Nigro V, Woodle ES, Alloway RR. Reply to "Fluctuation Does Not Mean Variability: A Pharmacokinetic Point of View". Am J Transplant 2017; 17:1693. [PMID: 28248455 DOI: 10.1111/ajt.14248] [Citation(s) in RCA: 0] [Impact Index Per Article: 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)
- S Tremblay
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH
| | - V Nigro
- Veloxis Pharmaceuticals Inc., Edison, NJ
| | - E S Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH
| | - R R Alloway
- Division of Nephrology, Department of Internal Medicine, Kidney C.A.R.E Program, University of Cincinnati College of Medicine, Cincinnati, OH
| |
Collapse
|
27
|
Abu Jawdeh BG, Leonard AC, Sharma Y, Katipally S, Shields AR, Alloway RR, Woodle ES, Thakar CV. Contrast-Induced Nephropathy in Renal Transplant Recipients: A Single Center Experience. Front Med (Lausanne) 2017; 4:64. [PMID: 28603715 PMCID: PMC5445129 DOI: 10.3389/fmed.2017.00064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/05/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Contrast-induced nephropathy (CIN) in native kidneys is associated with a significant increase in mortality and morbidity. Data regarding CIN in renal allografts are limited, however. We retrospectively studied CIN in renal allografts at our institution: its incidence, risk factors, and effect on long-term outcomes including allograft loss and death. METHODS One hundred thirty-five renal transplant recipients undergoing 161 contrast-enhanced computed tomography (CT) scans or coronary angiograms (Cath) between years 2000 and 2014 were identified. Contrast agents were iso- or low osmolar. CIN was defined as a rise in serum creatinine (SCr) by >0.3 mg/dl or 25% from baseline within 4 days of contrast exposure. After excluding 85 contrast exposures where patients had no SCr within 4 days of contrast administration, 76 exposures (CT: n = 45; Cath: n = 31) in 50 eligible patients were analyzed. Risk factors assessed included demographics, comorbid conditions, type/volume of contrast agent used, IV fluids, N-acetylcysteine administration, and calcineurin inhibitor use. Bivariate and multivariable analyses were used to assess the risk of CIN. RESULTS Incidence of CIN was 13% following both, CT (6 out of 45) and Cath (4 out of 31). Significant bivariate predictors of CIN were IV fluid administration (p = 0.05), lower hemoglobin (p = 0.03), and lower albumin (p = 0.02). In a multivariable model, CIN was predicted by N-acetylcysteine (p = 0.03) and lower hemoglobin (p = 0.01). Calcineurin inhibitor use was not associated with CIN. At last follow-up, CIN did not affect allograft or patient survival. CONCLUSION CIN is common in kidney transplant recipients, and there is room for quality improvement with regards to careful renal function monitoring post-contrast exposure. In our study, N-acetylcysteine exposure and lower hemoglobin were associated with CIN. Calcineurin inhibitor use was not associated with CIN. Our sample size is small, however, and larger prospective studies of CIN in renal allografts are needed.
Collapse
Affiliation(s)
- Bassam G Abu Jawdeh
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States.,Cincinnati VA Medical Center, Cincinnati, OH, United States
| | - Anthony C Leonard
- Department of Family and Community Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Yuvraj Sharma
- Division of Nephrology and Hypertension, Henry Ford Hospital, Detroit, MI, United States
| | - Swapna Katipally
- Indiana University Health Ball Memorial Hospital, Muncie, IN, United States
| | - Adele R Shields
- Division of Transplant Surgery, The Christ Hospital, Cincinnati, OH, United States
| | - Rita R Alloway
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States
| | - E Steve Woodle
- Division of Transplant Surgery, University of Cincinnati, Cincinnati, OH, United States
| | - Charuhas V Thakar
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States.,Cincinnati VA Medical Center, Cincinnati, OH, United States
| |
Collapse
|
28
|
Diwan TS, Lichvar AB, Leino AD, Vinks AA, Christians U, Shields AR, Cardi MA, Fukuda T, Mizuno T, Kaiser T, Woodle ES, Alloway RR. Pharmacokinetic and pharmacogenetic analysis of immunosuppressive agents after laparoscopic sleeve gastrectomy. Clin Transplant 2017; 31. [PMID: 28342282 DOI: 10.1111/ctr.12975] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND Severe obesity has been shown to limit access to renal transplantation in patients with end-stage renal disease (ESRD). Laparoscopic sleeve gastrectomy (LSG) has been performed in the ESRD population to assist in achieving waitlist and transplant eligibility. Little is known about how LSG impacts the bioequivalence of tacrolimus products and immunosuppression pharmacokinetics. METHODS This was a prospective, open-label, single-dose, crossover, two-period pharmacokinetic (PK) study. The purpose of this study was to assess single-dose PK of immediate-release tacrolimus (IR-TAC), extended-release tacrolimus (ER-TAC), and mycophenolic acid (MPA) in adult ESRD patients post-LSG. RESULTS Twenty-three subjects were included in the 24-hour PK assessments. The ratio of geometric means between ER-TAC and IR-TAC was 103.5% (90% CI; 89.6%-119.6%) for AUC0-24 and 92.5% (90% CI; 80.4%-106.4%) for Cmax . PK parameters were similar between ER-TAC and IR-TAC, except for Cmin (P=.004) and Cmax (P=.04). MPA AUC0-24 was similar when given with either ER-TAC or IR-TAC (P=.32). Patients expressing CYP3A5*1 genotypes had lower tacrolimus AUC0-24 values vs those with CYP3A5*3/*3 (IR-TACP<.001; ER-TACP=.008). Genotype did not impact MPA PK. CONCLUSION Dose modification of immunosuppressants post-LSG may not be necessary aside from standard therapeutic drug monitoring.
Collapse
Affiliation(s)
- Tayyab S Diwan
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Alicia B Lichvar
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Abbie D Leino
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Alexander A Vinks
- Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Uwe Christians
- Department of Anesthesiology, iC42 Clinical Research and Development, University of Colorado Denver, Aurora, CO, USA
| | - Adele R Shields
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,The Christ Hospital, Cincinnati, OH, USA
| | | | - Tsuyoshi Fukuda
- Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Tomoyuki Mizuno
- Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Tiffany Kaiser
- Division of Digestive Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| |
Collapse
|
29
|
Abstract
In the past few decades, great advances have been made in the field of solid-organ transplantation. A greater understanding of immune system function, the development of modern immunosuppression, and advancements in surgical technique have led to marked improvements in both recipient and graft survivals, as well as recipients' quality of life. However, improved survival rates have also led to prolonged exposure to chronic immunosuppression, which increases the risk for the development of posttransplant malignancies. In addition, older transplant candidates are being considered, carrying with them the increased likelihood of pre-existing malignancy. Consequently, the potential risk of posttransplant malignancy must be considered. Moreover, as long-term transplant survivors continue to age, posttransplant malignancies will be seen more frequently. This review presents the more commonly encountered posttransplant malignancies and the measures that are currently being utilized to prevent and treat them.
Collapse
Affiliation(s)
- Jennifer Trofe
- Israel Penn International Transplant Tumor Registry, University of Cincinnati, Cincinnati, Ohio, USA
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Trofe J, Gordon J, Roy-Chaudhury P, Koralnik IJ, Atwood WJ, Alloway RR, Khalili K, Woodle ES. Polyomavirus Nephropathy in Kidney Transplantation. Prog Transplant 2016; 14:130-40; quiz 141-2. [PMID: 15264457 DOI: 10.1177/152692480401400207] [Citation(s) in RCA: 8] [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: 02/01/2023]
Abstract
Polyomavirus nephropathy has become an important complication in kidney transplantation, with a prevalence of 1% to 8%. Unfortunately, the risk factors for polyomavirus nephropathy and renal allograft loss are not well defined. The definitive diagnosis is made through assessment of a kidney transplant biopsy. Recently, noninvasive urine and serum markers have been used to assist in polyomavirus nephropathy diagnosis and monitoring. Primary treatment is immunosuppression reduction, but must be balanced with the risks of rejection. No antiviral treatments for polyomavirus nephropathy have been approved by the Food and Drug Administration. Although cidofovir has shown in vitro activity against murine polyomaviruses, and has been effective in some patients, it is associated with significant nephrotoxicity. Graft loss due to polyomavirus nephropathy should not be a contraindication to retransplantation; however, experience is limited. This review presents potential risk factors, screening, diagnostic and monitoring methods, therapeutic management, and retransplantation experience for polyomavirus nephropathy.
Collapse
Affiliation(s)
- Jennifer Trofe
- University of Cincinnati, Division of Transplantation, Ohio, USA
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Abstract
Patient education is a very important aspect of the treatment of asthma. Success of therapy is highly dependent upon patients' knowledge of asthma and the correct use of their medications. Over the last decade the morbidity and mortality rates due to asthma have increased. Education of patients is necessary to reduce these rates. Pharmacists can play a major role in the education of patients. Pharmacists are readily available and see most patients frequently for refills. Regular use of anti-inflammatory medications, use of β2-agonists for rescue therapy, and prevention of exercise induced asthma, and correct inhaler technique should be stressed. Spacer devices and peak flow meters should be routinely recommended by pharmacists. Educational aids such as handouts, pamphlets, and video tapes are available from many different organizations that can help make education more time efficient. Asthma education is a rewarding service to offer asthma patients and helps to develop loyalty as well as overall better health care for patients.
Collapse
|
32
|
Revollo JY, Cuffy MC, Witte DP, Paterno F, Alloway RR, Woodle ES. Case Report: Hemolytic Anemia Following Deceased Donor Renal Transplantation Associated With Tranexamic Acid Administration for Disseminated Intravascular Coagulation. Transplant Proc 2016; 47:2239-42. [PMID: 26361688 DOI: 10.1016/j.transproceed.2015.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 05/27/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Long-term outcomes of kidney transplantation with organs from donors with disseminated intravascular coagulation (DIC) are comparable with those from other deceased donors. The use of tranexamic acid to impair fibrinolysis in the treatment of DIC is becoming increasingly frequent, particularly in the trauma setting. However, the effects of tranexamic acid on a transplanted kidney allograft are unknown. RESULTS We report 2 cases of kidney transplantation following administration of tranexamic acid to the donor prior to organ donation. Microthrombi were present in the renal allografts. Both recipients experienced clinically significant hemolytic anemia, which typically occurs at a very low frequency. CONCLUSIONS These cases illustrate a potential concern for the use of tranexamic acid in deceased kidney donors with DIC.
Collapse
Affiliation(s)
- J Y Revollo
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA; Department of Pharmacy Services, B-069, Jackson Memorial Hospital, Miami, Florida, USA
| | - M C Cuffy
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - D P Witte
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - F Paterno
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - R R Alloway
- Division of Nephrology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - E S Woodle
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA.
| |
Collapse
|
33
|
Revollo JY, Cuffy MC, Abu Jawdeh BG, Paterno F, Girnita A, Brailey P, Alloway RR, Woodle ES. Case Report: Successful Living Donor Kidney Transplantation in a Highly Human Leukocyte Antigen-Sensitized Recipient With a Positive Cytotoxic Crossmatch Using Bortezomib-Based Desensitization Without Intravenous Immunoglobulin. Transplant Proc 2016; 47:2254-7. [PMID: 26361693 DOI: 10.1016/j.transproceed.2015.05.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 05/27/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Highly sensitized patients, who produce antibodies against multiple anti-human leukocyte antigens, have significantly reduced chances for renal transplantation. Traditionally, desensitization protocols to reduce the levels of antibodies have relied on the use of intravenous immunoglobulin and plasmapheresis. RESULTS Here we report the case of a patient with a calculated panel-reactive antibody level of 100% who was desensitized using multiple courses of bortezomib, a proteasome inhibitor, in an intravenous immunoglobulin-free regimen. The patient underwent a successful transplantation with an allograft from a living donor and has continued to do well post-transplantation. CONCLUSIONS The expression of anti-human leukocyte antigen antibodies decreases the likelihood of transplantation for patients by restricting the available donor pool. New protocols that reduce antibody expression in these patients and allow for renal transplantation are needed. Bortezomib, as used in the patient reported here, represents a promising new medication for successful desensitization and transplantation.
Collapse
Affiliation(s)
- J Y Revollo
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA; Department of Pharmacy Services, B-069, Jackson Memorial Hospital, Miami, Florida, USA
| | - M C Cuffy
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - B G Abu Jawdeh
- Division of Nephrology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - F Paterno
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - A Girnita
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA; Hoxworth Blood Center, University of Cincinnati Academic Health Center, Cincinnati, Ohio, USA
| | - P Brailey
- Hoxworth Blood Center, University of Cincinnati Academic Health Center, Cincinnati, Ohio, USA
| | - R R Alloway
- Division of Nephrology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
| | - E S Woodle
- Department of Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio, USA.
| |
Collapse
|
34
|
Tremblay S, Kaiser TE, Alloway RR, Woodle ES, Diwan TS. Absence of the Effect of Pretransplant Body Mass Index on Post Kidney Transplant Outcomes. Prog Transplant 2016; 26:183-90. [PMID: 27207408 DOI: 10.1177/1526924816640679] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 01/14/2023]
Abstract
CONTEXT Obesity has been reported as risk factor for reduced posttransplant graft and patient survival and increased delayed graft function (DGF). OBJECTIVE The purpose of this work is to analyze the effect of body mass index (BMI) on defined transplant outcomes in patients transplanted under defined guidelines in a kidney transplant program. DESIGN Review of a prospectively collected database in renal transplant recipients receiving rabbit antithymocyte globulin induction, mycophenolate mofetil, tacrolimus, and early corticosteroid withdrawal between 2001 and 2011. SETTING This review was conducted in a single abdominal transplant program in the United States. MAIN OUTCOME MEASURES Primary outcome was death-censored graft survival categorized by posttransplant body mass groups. Secondary outcomes included DGF as well as patient survival. RESULTS Four hundred sixty seven patients were identified. No difference was observed in graft survival or DGF between BMI groups. One-year, death-censored graft survival and patient survival rates ranged from 97.5% to 100% and 96.6% to 100%, respectively. Delayed graft function was uncommon across all BMI groups, ranging from 5.3% to 9.1%, with the lowest incidence in patients with a BMI ≥ 35 kg/m(2). Biopsy-proven acute rejection rates at 1 year were similar across all groups (10.1%-14%) as were estimated glomerular filtration rates were at 1, 3, and 5 years. CONCLUSION Our results do not show an effect of BMI on posttransplant outcomes, suggesting that relaxation of BMI criteria may be warranted for recipient selection.
Collapse
Affiliation(s)
- Simon Tremblay
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Tiffany E Kaiser
- Division of Digestive Diseases, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Rita R Alloway
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - Tayyab S Diwan
- Division of Transplantation, Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| |
Collapse
|
35
|
Bunnapradist S, Rostaing L, Alloway RR, West-Thielke P, Denny J, Mulgaonkar S, Budde K. LCPT once-daily extended-release tacrolimus tablets versus twice-daily capsules: a pooled analysis of two phase 3 trials in important de novo and stable kidney transplant recipient subgroups. Transpl Int 2016; 29:603-11. [PMID: 26953629 DOI: 10.1111/tri.12770] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 09/10/2015] [Revised: 11/07/2015] [Accepted: 02/26/2016] [Indexed: 11/29/2022]
Abstract
African-American and elderly kidney transplant recipients (KTR) have increased risk for poor clinical outcomes post-transplant. Management of immunosuppression may be challenging in these patients and contribute to worse outcomes. A novel once-daily formulation of tacrolimus (LCPT) has demonstrated noninferiority, similar safety, improved bioavailability, a consistent concentration time profile, and less peak and peak-trough fluctuations vs. tacrolimus twice-daily (Tac BID). This pooled analysis of two phase 3 randomized, controlled trials, including 861 (LCPT N = 428; Tac BID N = 433; 38% of patients were stable KTR, and 62% were de novo KTR) patients, examined the efficacy of LCPT in KTR subgroups (blacks, females, and age ≥65). Overall, treatment failure [death, graft failure, centrally read biopsy-proven acute rejection (BPAR), or lost to follow-up] at 12 months was as follows: LCPT: 11.9%, BID Tac: 13.4% [-1.48% (-5.95%, 2.99%)]. BPAR rates were as follows: LCPT: 8.2%, Tac BID: 9.5% [-1.29% (-5.14%, 2.55%)]. Numerically, fewer treatment failure events with LCPT were found in the majority of subgroups, with significantly less treatment failure associated with LCPT among black KTR [-13.82% (-27.22%, -0.31%)] and KTR ≥65 [-13.46% (-25.27%, -0.78%)]. This pooled analysis suggests numerically lower efficacy failure rates associated with LCPT among high-risk subgroups, in particular black KTR and KTR ≥65 years old.
Collapse
Affiliation(s)
| | | | - Rita R Alloway
- University of Cincinnati Medical Center & The Christ Hospital, Cincinnati, OH, USA
| | | | | | | | | |
Collapse
|
36
|
Stegall MD, Morris RE, Alloway RR, Mannon RB. Developing New Immunosuppression for the Next Generation of Transplant Recipients: The Path Forward. Am J Transplant 2016; 16:1094-101. [PMID: 26730885 DOI: 10.1111/ajt.13582] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [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: 09/13/2015] [Revised: 10/13/2015] [Accepted: 10/14/2015] [Indexed: 01/25/2023]
Abstract
The development of new immunosuppressive drugs has slowed markedly over the past several years, and the outlook that improved therapy will be available to the next generation of transplant recipients is bleak. In this viewpoint, the authors outline some of important barriers to new drug development and suggest specific steps that the transplant community can take to overcome them.
Collapse
Affiliation(s)
- M D Stegall
- Departments of Surgery and Immunology, von Liebig Transplant Center, Mayo Clinic, Rochester, MN
| | - R E Morris
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA
| | - R R Alloway
- Department of Medicine, University of Cincinnati School of Medicine, Cincinnati, OH
| | - R B Mannon
- Departments of Medicine and Surgery, Comprehensive Transplant Institute, University of Alabama at Birmingham, Birmingham, AL
| |
Collapse
|
37
|
Shokati T, Bodenberger N, Gadpaille H, Schniedewind B, Vinks AA, Jiang W, Alloway RR, Christians U. Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS. J Vis Exp 2015:e52424. [PMID: 26575262 DOI: 10.3791/52424] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The calcineurin inhibitor tacrolimus is the cornerstone of most immunosuppressive treatment protocols after solid organ transplantation in the United States. Tacrolimus is a narrow therapeutic index drug and as such requires therapeutic drug monitoring and dose adjustment based on its whole blood trough concentrations. To facilitate home therapeutic drug and adherence monitoring, the collection of dried blood spots is an attractive concept. After a finger stick, the patient collects a blood drop on filter paper at home. After the blood is dried, it is mailed to the analytical laboratory where tacrolimus is quantified using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) in combination with a simple manual protein precipitation step and online column extraction. For tacrolimus analysis, a 6-mm disc is punched from the saturated center of the blood spot. The blood spot is homogenized using a bullet blender and then proteins are precipitated with methanol/0.2 M ZnSO4 containing the internal standard D2,(13)C-tacrolimus. After vortexing and centrifugation, 100 µl of supernatant is injected into an online extraction column and washed with 5 ml/min of 0.1 formic acid/acetonitrile (7:3, v:v) for 1 min. Hereafter, the switching valve is activated and the analytes are back-flushed onto the analytical column (and separated using a 0.1% formic acid/acetonitrile gradient). Tacrolimus is quantified in the positive multi reaction mode (MRM) using a tandem mass spectrometer. The assay is linear from 1 to 50 ng/ml. Inter-assay variability (3.6%-6.1%) and accuracy (91.7%-101.6%) as assessed over 20 days meet acceptance criteria. Average extraction recovery is 95.5%. There are no relevant carry-over, matrix interferences and matrix effects. Tacrolimus is stable in dried blood spots at RT and at +4 °C for 1 week. Extracted samples in the autosampler are stable at +4 °C for at least 72 hr.
Collapse
Affiliation(s)
- Touraj Shokati
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Nicholas Bodenberger
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Holly Gadpaille
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Björn Schniedewind
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Alexander A Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center
| | - Wenlei Jiang
- Food and Drug Administration (FDA), Center of Drug Evaluation Research - Office of Generic Drugs
| | | | - Uwe Christians
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus;
| |
Collapse
|
38
|
Girnita A, Portwood E, Brailey P, Cuffy M, Tica A, Paterno F, Diwan T, Shah S, Mogilishetty G, Cardi M, Govil A, Alloway RR, Woodle ES. Epitope cluster analysis for donor-specific antibody identification in eluates from fine-needle allograft biopsy. Hum Immunol 2015. [DOI: 10.1016/j.humimm.2015.07.175] [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: 10/23/2022]
|
39
|
Freeman CM, Woodle ES, Shi J, Alexander JW, Leggett PL, Shah SA, Paterno F, Cuffy MC, Govil A, Mogilishetty G, Alloway RR, Hanseman D, Cardi M, Diwan TS. Addressing morbid obesity as a barrier to renal transplantation with laparoscopic sleeve gastrectomy. Am J Transplant 2015; 15:1360-8. [PMID: 25708829 DOI: 10.1111/ajt.13116] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [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: 07/09/2014] [Revised: 10/20/2014] [Accepted: 11/16/2014] [Indexed: 01/25/2023]
Abstract
Morbid obesity is a barrier to renal transplantation and is inadequately addressed by medical therapy. We present results of a prospective evaluation of laparoscopic sleeve gastrectomy (LSG) for patients failing to achieve significant weight loss with medical therapy. Over a 25-month period, 52 obese renal transplant candidates meeting NIH guidelines for metabolic surgery underwent LSG. Mean age was 50.0 ± 10.0 years with an average preoperative BMI of 43.0 ± 5.4 kg/m(2) (range 35.8-67.7 kg/m(2)). Follow-up after LSG was 220 ± 152 days (range 26-733 days) with last BMI of 36.3 ± 5.3 kg/m(2) (range 29.2-49.8 kg/m(2)) with 29 (55.8%) patients achieving goal BMI of <35 kg/m(2) at 92 ± 92 days (range 13-420 days). The mean percentage of excess weight loss (%EWL) was 32.1 ± 17.6% (range 6.7-93.8%). A segmented regression model was used to compare medical therapy versus LSG. This revealed a statistically significant increase in the BMI reduction rate (0.3 kg/m(2)/month versus 1.1 kg/m(2)/month, p < 0.0001). Patients also experienced a 40.9% decrease in anti-hypertensive medications (p < 0.001) and a 49.7% decrease in total daily insulin dose (p < 0.001). LSG is a safe and effective means for addressing obesity in kidney transplant candidates in the context of a multidisciplinary approach.
Collapse
Affiliation(s)
- C M Freeman
- Department of Surgery, Division of Transplantation, University of Cincinnati College of Medicine, Cincinnati, OH
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Woodle ES, Shields AR, Ejaz NS, Sadaka B, Girnita A, Walsh RC, Alloway RR, Brailey P, Cardi MA, Abu Jawdeh BG, Roy-Chaudhury P, Govil A, Mogilishetty G. Prospective iterative trial of proteasome inhibitor-based desensitization. Am J Transplant 2015; 15:101-18. [PMID: 25534446 DOI: 10.1111/ajt.13050] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [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: 01/31/2014] [Revised: 08/14/2014] [Accepted: 08/19/2014] [Indexed: 01/25/2023]
Abstract
A prospective iterative trial of proteasome inhibitor (PI)-based therapy for reducing HLA antibody (Ab) levels was conducted in five phases differing in bortezomib dosing density and plasmapheresis timing. Phases included 1 or 2 bortezomib cycles (1.3 mg/m(2) × 6-8 doses), one rituximab dose and plasmapheresis. HLA Abs were measured by solid phase and flow cytometry (FCM) assays. Immunodominant Ab (iAb) was defined as highest HLA Ab level. Forty-four patients received 52 desensitization courses (7 patients enrolled in multiple phases): Phase 1 (n = 20), Phase 2 (n = 12), Phase 3 (n = 10), Phase 4 (n = 5), Phase 5 (n = 5). iAb reductions were observed in 38 of 44 (86%) patients and persisted up to 10 months. In Phase 1, a 51.5% iAb reduction was observed at 28 days with bortezomib alone. iAb reductions increased with higher bortezomib dosing densities and included class I, II, and public antigens (HLA DRβ3, HLA DRβ4 and HLA DRβ5). FCM median channel shifts decreased in 11/11 (100%) patients by a mean of 103 ± 54 mean channel shifts (log scale). Nineteen out of 44 patients (43.2%) were transplanted with low acute rejection rates (18.8%) and de novo DSA formation (12.5%). In conclusion, PI-based desensitization consistently and durably reduces HLA Ab levels providing an alternative to intravenous immune globulin-based desensitization.
Collapse
Affiliation(s)
- E S Woodle
- Department of Surgery, Division of Transplantation, University of Cincinnati College of Medicine, Cincinnati, OH
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Kaiser TE, Alloway RR. Complications in Transplantation: Medication Nonadherence. Clin Transpl 2015; 31:275-284. [PMID: 28514589] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Following solid organ transplant, complex, lifelong medication regimens are required to prevent allograft rejection. Estimates of medication nonadherence in transplant recipients vary and may be as high as 70%. Poor medication adherence post transplant has been recognized as a contributing factor to reduced outcomes, including rejection, graft loss, and survival. Despite the numerous identified approaches for adherence assessment, there remains no gold standard. Ongoing efforts to identify optimal immunosuppressant adherence monitoring and measuring tools in an attempt to identify at risk populations post transplantation continue; however, the link between this information and outcomes remains to be discovered. Future adherence studies within the transplant population should focus on developing surrogate markers of immunosuppressant therapy adequacy and exploring the association amongst this data, adherence interventions, and outcomes so that optimal strategies may be identified. Immunosuppressant adherence should not be assumed, and interventions aimed a priori will provide opportunities to derail the movement of negative health outcomes resulting from preventable causes.
Collapse
Affiliation(s)
- Tiffany E Kaiser
- Division of Digestive Disease, University of Cincinnati, Cincinnati, OH
| | - Rita R Alloway
- Division of Nephrology, University of Cincinnati, Cincinnati, OH
| |
Collapse
|
42
|
Ejaz NS, Alloway RR, Halleck F, Dürr M, Budde K, Woodle ES. Review of bortezomib treatment of antibody-mediated rejection in renal transplantation. Antioxid Redox Signal 2014; 21:2401-18. [PMID: 24635140 DOI: 10.1089/ars.2014.5892] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
SIGNIFICANCE Development of donor-specific antibodies (DSA) after kidney transplantation is associated with reduced allograft survival. A few strategies have been tested in controlled clinical trials for the treatment of antibody-mediated rejection (AMR), and no therapies are approved by regulatory authorities. Thus development of antihumoral therapies that provide prompt elimination of DSA and improve allograft survival is an important goal. RECENT ADVANCES Proteasome inhibitor (PI)-based regimens provide a promising new approach for treating AMR. To date, experiences have been limited to off-label bortezomib use in AMR. Key findings with PI-based therapy are that they provide effective primary and rescue therapy for AMR by prompt reduction in immunodominant DSA and improvements in histologic and renal function. Early and late AMR differ immunologically and in response to PI therapy. Bortezomib-related toxicities in renal transplant recipients are similar to those observed in the multiple myeloma population. CRITICAL ISSUES Although preliminary evidence with PI therapy for AMR is encouraging, the evidence is limited. Larger, prospective, randomized controlled trials with long-term follow up are needed. Advancement in endpoints of clinical trial designs and rigorous clinical trials with more standardized adjunct therapies are also required to explore the risks and benefits of AMR treatment modalities. FUTURE DIRECTIONS In the next few years, new PIs are likely to be introduced and new approaches would be developed for achieving synergy with PIs. The ultimate goal will be to develop a regimen that delivers reliable, rapid, complete, and durable elimination of DSA with an acceptable safety profile.
Collapse
Affiliation(s)
- Nicole S Ejaz
- 1 Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine , Cincinnati, Ohio
| | | | | | | | | | | |
Collapse
|
43
|
Alloway RR, Eckhoff DE, Washburn WK, Teperman LW. Conversion from twice daily tacrolimus capsules to once daily extended-release tacrolimus (LCP-Tacro): phase 2 trial of stable liver transplant recipients. Liver Transpl 2014; 20:564-75. [PMID: 24493215 DOI: 10.1002/lt.23844] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/21/2014] [Indexed: 12/23/2022]
Abstract
LCP-Tacro is an extended-release formulation of tacrolimus designed for once-daily dosing. Studies in renal transplantation demonstrate greater bioavailability with similar safety and efficacy vs. twice-daily tacrolimus capsules. In this phase 2 study, adult stable liver transplant patients on tacrolimus capsules (Prograf) twice-daily were converted to tacrolimus tablets (LCP-Tacro) once-daily; patients continued on LCP-Tacro once-daily for days 8-21; target trough levels were 5-15 ng/mL; 24-hour pharmacokinetic (PK) assessments were done on days 7 (baseline pre-switch), 14, and 21. A 6 month extension study phase evaluated PK and safety following a total of 52 weeks of LCP-Tacro. Fifty-seven patients completed LCP-Tacro dosing in the core study; 43 completed the extension phase. The mean conversion ratio was 0.71 (Prograf:LCP-Tacro). PK data demonstrated consistent exposure (AUC) at the lower conversion dose. Cmax , Cmax /Cmin ratio, percent fluctuation and swing were significantly (P<0.001) lower and Tmax significantly (P<0.001) longer for LCP-Tacro vs. Prograf. AUC24 and Cmin correlation coefficients after 7 and 14 days of therapy were ≥0.93. There were no significant differences in PK parameters at week 26 vs. 14. One patient experienced an unrelated serious adverse event (SAE) during the core study and discontinued. There were six unrelated SAEs in the extension and 1 possibly related (rejection) that resolved; there were 3 discontinuations due to AEs during the extension. In this study, patients were safely converted from Prograf twice-daily to LCP-Tacro. The greater bioavailability of LCP-Tacro allowed for once-daily dosing and similar (AUC) exposure at a dose approximately 30% less than the total daily dose of Prograf. LCP-Tacro displayed significantly lower peak and peak-trough fluctuations. LCP-Tacro administered over one year was well tolerated with no new safety concerns.
Collapse
Affiliation(s)
- Rita R Alloway
- Division of Transplantation, Department of Nephrology, University of Cincinnati, Cincinnati, OH
| | | | | | | |
Collapse
|
44
|
Abu Jawdeh BG, Cuffy MC, Alloway RR, Shields AR, Woodle ES. Desensitization in kidney transplantation: review and future perspectives. Clin Transplant 2014; 28:494-507. [DOI: 10.1111/ctr.12335] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Bassam G. Abu Jawdeh
- Division of Nephrology; Department of Internal Medicine; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Madison C. Cuffy
- Division of Transplantation; Department of Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Rita R. Alloway
- Division of Nephrology; Department of Internal Medicine; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - Adele Rike Shields
- Division of Transplantation; Department of Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| | - E. Steve Woodle
- Division of Transplantation; Department of Surgery; University of Cincinnati College of Medicine; Cincinnati OH USA
| |
Collapse
|
45
|
Ejaz NS, Shields AR, Alloway RR, Sadaka B, Girnita AL, Mogilishetty G, Cardi M, Woodle ES. Randomized controlled pilot study of B cell-targeted induction therapy in HLA sensitized kidney transplant recipients. Am J Transplant 2013; 13:3142-54. [PMID: 24266968 DOI: 10.1111/ajt.12493] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [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: 04/15/2013] [Revised: 08/19/2013] [Accepted: 09/02/2013] [Indexed: 01/25/2023]
Abstract
Optimal induction regimens for patients at high risk for antibody and/or cell-mediated rejection have not been established. This pilot, prospective, randomized study evaluated addition of B cell/plasma cell-targeting agents to T cell-based induction with rabbit antithymocyte globulin (rATG) in high immunologic risk renal transplant recipients. Patients were randomized to induction with rATG, rATG + rituximab, rATG + bortezomib or rATG + rituximab + bortezomib. Inclusion criteria were: (1) current cytotoxic panel reactive antibody (PRA) ≥20% or peak cytotoxic PRA ≥50% or (2) T or B cell positive flow crossmatch with donor-specific antibody (DSA) or (3) historical positive serologic or cytotoxic crossmatch or DSA to donor or (4) prior allograft loss with more than one acute rejection. Median overall follow-up was 496 days: 1-year and overall acute rejection were 25% and 27.5%, and 25% of patients developed de novo DSA within 1 year. One-year and overall patient survival were 97.5% and 92.5%, and 1-year and overall death-censored allograft survival were 97.5% and 95%. Renal allograft function posttransplant was similar among all arms. Eight of nine cases of peripheral neuropathy were mild, whereas one case was moderate and required a narcotic prescription. In conclusion, addition of rituximab and/or bortezomib to rATG induction has an acceptable safety/toxicity profile in a high immunologic risk renal transplant population.
Collapse
Affiliation(s)
- N S Ejaz
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
Despite intensive traditional immunosuppressive therapy, rates of graft loss have approximated 15% to 20% at 1 year following antibody-mediated rejection (AMR) in solid organ transplant recipients. Therefore, the development of antihumoral therapies that provide prompt elimination of donor-specific anti-HLA antibodies and improve allograft survival is an important goal. Traditional treatment modalities for AMR deplete B-cell populations but not the cell at the source of antibody production, the mature plasma cell. Plasma cell-targeted therapies using proteasome inhibition is a novel approach to treating AMR. This review discusses current and emerging treatment modalities used for AMR.
Collapse
Affiliation(s)
- Basma Sadaka
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML 558, Cincinnati, OH 45267-0558, USA
| | | | | |
Collapse
|
47
|
Gaber AO, Alloway RR, Bodziak K, Kaplan B, Bunnapradist S. Conversion from twice-daily tacrolimus capsules to once-daily extended-release tacrolimus (LCPT): a phase 2 trial of stable renal transplant recipients. Transplantation 2013; 96:191-7. [PMID: 23715050 PMCID: PMC3723088 DOI: 10.1097/tp.0b013e3182962cc1] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2007] [Indexed: 12/24/2022]
Abstract
BACKGROUND LCP-Tacro is an extended-release formulation of tacrolimus designed for once-daily dosing. Phase 1 studies demonstrated greater bioavailability to twice-daily tacrolimus capsules and no new safety concerns. METHODS In this phase 2 study, adult stable kidney transplant patients on tacrolimus capsules (Prograf) twice-daily were converted to tacrolimus tablets (LCP-Tacro) once-daily; patients continued on LCP-Tacro once-daily for days 8 to 21; trough levels were to be maintained between 5 and 15 ng/mL; 24-hr pharmacokinetic assessments were done on days 7 (baseline pre-switch), 14, and 21. RESULTS Forty-seven patients completed LCP-Tacro dosing per protocol. The mean conversion ratio was 0.71. Pharmacokinetic data demonstrated consistent exposure (AUC) at the lower conversion dose. C(max) (P = 0.0001), C(max)/C(min) ratio (P < 0.001), percent fluctuation (P < 0.0001), and swing (P = 0.0004) were significantly lower and T(max) significantly (P < 0.001) longer for LCP-Tacro versus Prograf. AUC24 and C(min) correlation coefficients after 7 and 14 days of therapy were 0.86 or more, demonstrating a robust correlation between LCP-Tacro tacrolimus exposure and trough levels. There were three serious adverse events; none were related to study drug and all were resolved. CONCLUSIONS Stable kidney transplant patients can be safely converted from Prograf twice-daily to LCP-Tacro. The greater bioavailability of LCP-Tacro allows for once-daily dosing and similar (AUC) exposure at a dose approximately 30% less than the total daily dose of Prograf. LCP-Tacro displays flatter kinetics characterized by significantly lower peak-trough fluctuations.
Collapse
|
48
|
Yates CR, Zhang W, Song P, Li S, Gaber AO, Kotb M, Honaker MR, Alloway RR, Meibohm B. The Effect of CYP3A5 and MDR1 Polymorphic Expression on Cyclosporine Oral Disposition in Renal Transplant Patients. J Clin Pharmacol 2013. [DOI: 10.1177/0091270003253617] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
49
|
Woodle ES, Alloway RR, Ejaz NS. Plasma cell biology: principles for therapeutic design. Clin Transpl 2013:277-283. [PMID: 25095519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Plasma cells represent the terminally differentiated cell population of the B-lymphocyte lineage. Plasma cells possess a unique biology, primarily as a result of their role as antibody factories. The unique features associated with the massive antibody production capacity confer upon the plasma cell a vulnerability to attack by specific targeted therapies. Over the past nine years, we have worked to develop therapies that exploit the unique features of plasma cells - therapies we have termed plasma cell targeted therapies. To date, these therapies have been almost exclusively based on proteasome inhibitor therapy, which has been used to treat antibody-mediated rejection and also to reduce chronic human leukocyte antigen antibody production via therapies commonly referred to as "desensitization." Future iterations of plasma cell targeted regimens, however, are more likely to depend on combination therapies designed specifically to achieve additivity and preferably synergy, using either small molecule inhibitors of metabolic pathways or alternatively, biologic agents. As such, these plasma cell targeted therapies provide a new approach for treating acute and chronic antibody responses in humans, not only in transplantation, but also in other disease states including autoimmune disease.
Collapse
|
50
|
Alloway RR, Sadaka B, Trofe-Clark J, Wiland A, Bloom RD. A randomized pharmacokinetic study of generic tacrolimus versus reference tacrolimus in kidney transplant recipients. Am J Transplant 2012; 12:2825-31. [PMID: 22759200 PMCID: PMC3472020 DOI: 10.1111/j.1600-6143.2012.04174.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Pharmacokinetic analyses comparing generic tacrolimus preparations versus the reference drug in kidney transplant patients are lacking. A prospective, multicenter, open-label, randomized, two-period (14 days per period), two-sequence, crossover and steady-state pharmacokinetic study was undertaken to compare twice-daily generic tacrolimus (Sandoz) versus reference tacrolimus (Prograf®) in stable renal transplant patients. AUC(0-12h) and peak concentration (C(max) ) were calculated from 12 h pharmacokinetic profiles at the end of each period (days 14 and 28). Of 71 patients enrolled, 68 provided evaluable pharmacokinetic data. The ratios of geometric means were 1.02 (90% CI 97-108%, p = 0.486) for AUC(0-12h) and 1.09 (90% CI 101-118%, p = 0.057) for C(max) . Mean (SD) C(0) was 7.3(1.8) ng/mL for generic tacrolimus versus 7.0(2.1) ng/mL for reference tacrolimus based on data from days 14 and 28. Correlations between 12 h trough levels and AUC were r = 0.917 for generic tacrolimus and r = 0.887 for reference drug at day 28. These data indicate that generic tacrolimus (Sandoz) has a similar pharmacokinetic profile to the reference drug and is bioequivalent in kidney transplant recipients according to US Food and Drug Administration and European Medicines Agency guidelines.
Collapse
Affiliation(s)
- R R Alloway
- Division of Nephrology, Section of Transplantation, University of CincinnatiCincinnati, OH,*Corresponding author: Rita R. Alloway,
| | - B Sadaka
- Division of Nephrology, Section of Transplantation, University of CincinnatiCincinnati, OH
| | - J Trofe-Clark
- Renal Division, Perelman School of Medicine, University of Pennsylvania, and Department of Pharmacy, Hospital University of PennsylvaniaPhiladelphia, PA
| | - A Wiland
- Novartis Pharmaceuticals CorporationEast Hanover, NJ
| | - R D Bloom
- Renal Division, Perelman School of Medicine, University of PennsylvaniaPhiladelphia, PA
| |
Collapse
|