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Al Agbar S, Sharma A, Cohoe E, Beaune D, Sidahmed AME. The novel HLA-DQA1*05:05:17:03 allele, identified in a potential organ donor. HLA 2024; 103:e15489. [PMID: 38647206 DOI: 10.1111/tan.15489] [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: 03/21/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
HLA-DQA1*05:05:17:03 differs from HLA-DQA1*05:05:01:02 by a single base substitution in exon 1 and HLA-DQA1*05:05:17:01 within introns 1 and 2.
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Affiliation(s)
- Sabina Al Agbar
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Arpit Sharma
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Elsa Cohoe
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - David Beaune
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Abubaker M E Sidahmed
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
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2
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Beaune D, Sharma A, Cohoe E, Al Agbar S, Sidahmed AME. The novel HLA-C*06:372 allele, identified in a stem cell donor of an old order mennonite ethnicity. HLA 2024; 103:e15432. [PMID: 38470345 DOI: 10.1111/tan.15432] [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: 02/06/2024] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/13/2024]
Abstract
HLA-C*06:372 differs from HLA-C*06:02:01:01 by a single substitution in exon 4.
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Affiliation(s)
- David Beaune
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Arpit Sharma
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Elsa Cohoe
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Sabina Al Agbar
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - Abubaker M E Sidahmed
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
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3
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Sharma A, Beaune D, Fielder D, Al Agbar S, Sidahmed AME. The novel HLA-DRB1*08:127 allele, identified in a deceased organ donor of Scandinavian descent. HLA 2024; 103:e15376. [PMID: 38323708 DOI: 10.1111/tan.15376] [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: 01/15/2024] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/08/2024]
Abstract
HLA-DRB1*08:127 differs from HLA-DRB1*08:01:01:01 by a single substitution in exon 4.
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Affiliation(s)
- A Sharma
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - D Beaune
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - D Fielder
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - S Al Agbar
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
| | - A M E Sidahmed
- Immunogenetics and Transplantation Laboratory, London Health Sciences Centre and Pathology and Laboratory Medicine, University Hospital, London, Ontario, Canada
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4
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Ulisses LRDS, Paixão JO, Agena F, de Souza PS, Paula FJ, Bezerra G, Rodrigues H, Panajotopolous N, David-Neto E, de Castro MCR. Desensitization using IVIG alone for living-donor kidney transplant: impact on donor-specific antibodies. J Bras Nefrol 2022; 44:527-532. [PMID: 35438714 PMCID: PMC9838666 DOI: 10.1590/2175-8239-jbn-2021-0200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/08/2021] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Sensitization to human leukocyte antigen is a barrier to. Few data have been published on desensitization using polyvalent human intravenous immunoglobulin (IVIG) alone. METHODS We retrospectively reviewed the of 45 patients with a positive complement-dependent cytotoxicity crossmatch (CDCXM) or flow cytometry crossmatch (FCXM) against living donors from January 2003 to December 2014. Of these, 12 were excluded. Patients received monthly IVIG infusions (2 g/kg) only until they had a negative T-cell and B-cell FCXM. RESULTS During the 33 patients, 22 (66.7%) underwent living donor kidney transplantation, 7 (21.2%) received a deceased donor graft, and 4 (12.1%) did not undergo transplantation. The median class I and II panel reactive antibodies for these patients were 80.5% (range 61%-95%) and 83.0% (range 42%-94%), respectively. Patients (81.8%) had a positive T-cell and/or B-cell CDCXM and 4 (18.2%) had a positive T-cell and/or B-cell FCXM. Patients underwent transplantation after a median of 6 (range 3-16). The median donor-specific antibody mean fluorescence intensity sum was 5057 (range 2246-11,691) before and 1389 (range 934-2492) after desensitization (p = 0.0001). Mean patient follow-up time after transplantation was 60.5 (SD, 36.8) months. Nine patients (45.0%). Death-censored graft survival at 1, 3, and 5 years after transplant was 86.4, 86.4, and 79.2%, respectively and patient survival was 95.5, 95.5, and 83.7%, respectively. CONCLUSIONS Desensitization using IVIG alone is an effective strategy, allowing successful transplantation in 87.9% of these highly sensitized patients.
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Affiliation(s)
- Luiz Roberto de Sousa Ulisses
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil.,Correspondence to: Luiz Roberto de Sousa Ulisses. E-mail:
| | - Jenaine Oliveira Paixão
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil
| | - Fabiana Agena
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil
| | - Patrícia Soares de Souza
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil
| | - Flávio J Paula
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil
| | - Gislene Bezerra
- Universidade de São Paulo, Instituto do Coração da São Paulo,
Laboratório de Imunologia, São Paulo, SP, Brasil
| | - Hélcio Rodrigues
- Universidade de São Paulo, Instituto do Coração da São Paulo,
Laboratório de Imunologia, São Paulo, SP, Brasil
| | - Nicolas Panajotopolous
- Universidade de São Paulo, Instituto do Coração da São Paulo,
Laboratório de Imunologia, São Paulo, SP, Brasil
| | - Elias David-Neto
- Universidade de São Paulo, Hospital das Clínicas, Serviço de
Transplante Renal, São Paulo, SP, Brasil
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5
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Katalinić N, Starčević A, Mavrinac M, Vuk T, Balen S. Non-conformities in tissue typing laboratory: Croatian experience. Transfus Med 2019; 29:442-447. [PMID: 31625204 DOI: 10.1111/tme.12642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 09/17/2019] [Accepted: 09/23/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Our study aimed to determine the frequency and type of non-conformities that occurred in the tissue typing laboratory (TTL), Rijeka, Croatia, in order to evaluate the quality of testing and compliance with the requirements of the quality management system (QMS). BACKGROUND The QMS in a TTL should lead to improvements in the accuracy and timeliness of results. One of its essential elements is non-conformity management. METHODS A retrospective analysis of non-conformities recorded in the TTL Rijeka from 2006 to 2017 revealed the overall frequency of 0·43%. Classification was performed according to the examination phase, employee characteristics, relation to the field of work, part of laboratory and priority of testing. RESULTS The most reported non-conformities occurred during the examination phase (54·0%), followed by the pre- and post-examination phase (31·2 and 14·8%, respectively). Inadequate competency and less experience were associated with the number of reported non-conformities while no difference was observed in relation to the profession or position in the laboratory. Non-conformities were equally distributed between organ transplantation and HLA-associated disease diagnostic processes, mostly referring to the entire laboratory work. CONCLUSION Intensifying training and education, implementation of information technology into laboratory processes, more rigorous error detection and reporting are fundamental steps in improving quality of laboratory services.
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Affiliation(s)
- N Katalinić
- Tissue Typing Laboratory, Clinical Institute for Transfusion Medicine, Clinical Hospital Centre Rijeka, Rijeka, Croatia.,Department of Clinical Laboratory Diagnostics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - A Starčević
- Tissue Typing Laboratory, Clinical Institute for Transfusion Medicine, Clinical Hospital Centre Rijeka, Rijeka, Croatia
| | - M Mavrinac
- Department of Medical Informatics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - T Vuk
- Croatian Institute of Transfusion Medicine, Zagreb, Croatia
| | - S Balen
- Tissue Typing Laboratory, Clinical Institute for Transfusion Medicine, Clinical Hospital Centre Rijeka, Rijeka, Croatia.,Department of Clinical Laboratory Diagnostics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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6
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Rogel CS, de Souza-Santana FC, Marcos EVC, Ogawa MM, Basso G, Tomimori J. HLA alleles in renal transplant recipients with nonmelanoma skin cancer in southeastern Brazil. An Bras Dermatol 2019; 94:287-292. [PMID: 31365656 PMCID: PMC6668948 DOI: 10.1590/abd1806-4841.20197322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 10/29/2017] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Renal transplant recipients are submitted to immunosuppression to avoid graft rejection, which makes them susceptible to various conditions. Furthermore, these individuals present malignant tumors more frequently than the general population, including nonmelanoma skin cancer. The individual genetic basis that acts in the pathogenesis of cutaneous cancer may present a protection or susceptibility factor for disease development. One of these factors is the HLA complex. OBJECTIVE To investigate HLA alleles association to the occurrence of nonmelanoma skin cancer in renal transplant recipients from São Paulo State. METHODS A total of 213 patients (93 renal transplant recipients with nonmelanoma skin cancer and 120 renal transplant recipients without nonmelanoma skin cancer) were evaluated by retrospective and cross-sectional study. Epidemiological, clinical and HLA typing data were found in databases. HLA class I (A, B) and class II (DR) alleles were compared to establish their association with nonmelanoma skin cancer. RESULTS Comparing renal transplant recipients with and without nonmelanoma skin cancer, the HLA-B*13 allele was associated with higher risk of developing nonmelanoma skin cancer while B*45 and B*50 alleles were associated with protection. STUDY LIMITATIONS The HLA A, B and DR alleles identification for the kidney transplantation routine is done by low and medium resolution techniques that do not allow discrimination of specific alleles. CONCLUSION The involvement of HLA alleles in nonmelanoma skin cancer in renal transplant recipients was confirmed in this study. Renal transplant recipients with HLA-B*13 showed higher risk for developing a skin cancer (OR= 7.29) and should be monitored for a long period of time after transplantation.
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Affiliation(s)
| | | | | | | | - Geovana Basso
- Outpatient clinic of post-transplant, Hospital do Rim e
Hipertensão, São Paulo (SP), Brazil
| | - Jane Tomimori
- Department of Dermatology, Universidade Federal de São
Paulo, São Paulo (SP), Brazil
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7
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Ismail MS, Cusick M, Galvan NTN. The Benefits of a Local Kidney Exchange. Tex Heart Inst J 2019; 46:71-72. [PMID: 30833849 DOI: 10.14503/thij-18-6747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Lazaro A, Hou L, Tu B, Masaberg C, Enriquez E, Gerfen J, Kariyawasam K, Persaud M, Qin X, Simbulan D, Xiao Y, Xun L, Yang R, Ng J, Hurley CK. Full gene HLA class I sequences of 79 novel and 519 mostly uncommon alleles from a large United States registry population. HLA 2018; 92:304-309. [PMID: 30117314 DOI: 10.1111/tan.13377] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 07/19/2018] [Revised: 08/09/2018] [Accepted: 08/13/2018] [Indexed: 12/26/2022]
Abstract
HLA class I assignments were obtained at single genotype, G-level resolution from 98 855 volunteers for an unrelated donor registry in the United States. In spite of the diverse ancestry of the volunteers, over 99% of the assignments at each locus are common. Within this population, 52 novel alleles differing in exons 2 and 3 are identified and characterized. Previously reported alleles with incomplete sequences in the IPD-IMGT/HLA database (n = 519) were selected for full gene sequencing and, from this sampling, another 27 novel alleles are described.
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Affiliation(s)
- Ana Lazaro
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Lihua Hou
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Bin Tu
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Carly Masaberg
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Elizabeth Enriquez
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Jennifer Gerfen
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Kanthi Kariyawasam
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Misti Persaud
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Xihan Qin
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Dannah Simbulan
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Yi Xiao
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Lisa Xun
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Ruyan Yang
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Jennifer Ng
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
| | - Carolyn K Hurley
- CW Bill Young Marrow Donor Recruitment and Research Program, Departments of Pediatrics and Oncology, Georgetown University, Washington, District of Columbia
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9
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Chowdhry M, Makroo RN, Kakkar B, Thakur Y, Kumar M, Singh M. A positive complement dependent cytotoxicity immunoglobulin G crossmatch due to auto-antibodies with a negative luminex bead assays in a renal transplant recipient: A Diagnostic dilemma. Asian J Transfus Sci 2018; 12:160-164. [PMID: 30692803 PMCID: PMC6327756 DOI: 10.4103/ajts.ajts_95_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/10/2017] [Indexed: 11/26/2022] Open
Abstract
Transplant recipients are always at a risk of developing anti-human leukocyte antigen (HLA) antibodies due to prior sensitizing events such as blood transfusions, multiple pregnancies, or transplantation. Unexpected positive outcomes can be seen in complement dependent cytotoxicity (CDC) based assays due to underlying autoimmune disorders or pharmacological treatment (rituximab/intravenous immunoglobulin/anti-thymocyte globulin administration), therefore, limiting its value. CDC based assay results strongly depend on the vitality of the donor lymphocytes, highlighting another major limitation of this assay. Thus, as an alternative approach, solid phase based crossmatch assays were introduced which function independently of the cell quality and have higher sensitivity and specificity in detecting anti-HLA antibodies. We describe a case where the patient awaiting renal transplantation from living related donor was evaluated by pretransplant histocompatibility testing for the detection of anti-HLA antibodies. The histocompatibility testing revealed positive CDC anti-human globulin and flow crossmatch along with negative Luminex based assays (HLA antibody screen, luminex crossmatch, and luminex single bead assay). Detailed histocompatibility workup revealed immunoglobulin G autoantibodies which were complement activating and lympocytoxic in nature.
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Affiliation(s)
- Mohit Chowdhry
- Department of Transfusion Medicine and Immunology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Raj Nath Makroo
- Department of Transfusion Medicine and Immunology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Brinda Kakkar
- Department of Transfusion Medicine, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Yogita Thakur
- Department of Transfusion Medicine and Immunology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Manoj Kumar
- Department of Transfusion Medicine and Immunology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Mandhata Singh
- Department of Transfusion Medicine and Immunology, Indraprastha Apollo Hospitals, New Delhi, India
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10
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Arnold ML, Bach C, Heinemann FM, Horn PA, Ziemann M, Lachmann N, Mühlbacher A, Dick A, Ender A, Thammanichanond D, Schaub S, Hönger G, Fischer GF, Mytilineos J, Hallensleben M, Hitzler WE, Seidl C, Spriewald BM. Anti-HLA alloantibodies of the IgA isotype in re-transplant candidates part II: Correlation with graft survival. Int J Immunogenet 2018; 45:95-101. [PMID: 29575597 DOI: 10.1111/iji.12363] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/29/2018] [Accepted: 03/01/2018] [Indexed: 11/30/2022]
Abstract
We reported previously on the widespread occurrence of anti-HLA alloantibodies of the IgA isotype (anti-HLA IgA) in the sera of solid-organ re-transplantation (re-tx) candidates (Arnold et al., ). Specifically focussing on kidney re-tx patients, we now extended our earlier findings by examining the impact of the presence and donor specificity of anti-HLA IgA on graft survival. We observed frequent concurrence of anti-HLA IgA and anti-HLA IgG in 27% of our multicenter collective of 694 kidney re-tx patients. This subgroup displayed significantly reduced graft survival as evidenced by the median time to first dialysis after transplantation (TTD 77 months) compared to patients carrying either anti-HLA IgG or IgA (TTD 102 and 94 months, respectively). In addition, donor specificity of anti-HLA IgA had a significant negative impact on graft survival (TTD 74 months) in our study. Taken together, our data strongly indicate that presence of anti-HLA IgA, in particular in conjunction with anti-HLA-IgG, in sera of kidney re-tx patients is associated with negative transplantation outcome.
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Affiliation(s)
- M-L Arnold
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - C Bach
- Department of Internal Medicine 5 - Hematology and Oncology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - F M Heinemann
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - P A Horn
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - M Ziemann
- Institute of Transfusion Medicine, University Hospital of Schleswig-Holstein, Lübeck- Kiel, Germany
| | - N Lachmann
- HLA Laboratory, Center for Tumor Medicine, Charité, Berlin, Germany
| | - A Mühlbacher
- Central Institute for Blood Transfusion and Immunology, General Hospital and University Clinics, Innsbruck, Austria
| | - A Dick
- Laboratory for Immunogenetics, University Hospital Grosshadern, Ludwig-Maximilians-University, Munich, Germany
| | - A Ender
- Central Institute for Transfusion Medicine and Blood Donation, Katharinenhospital Stuttgart, Stuttgart, Germany
| | - D Thammanichanond
- Histocompatibility and Immunogenetics Laboratory, Department of Pathology, Mahidol University Bangkok, Bangkok, Thailand
| | - S Schaub
- HLA-Diagnostics and Immunogenetics, Department of Laboratory Medicine, Transplantation Immunology & Nephrology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland
| | - G Hönger
- Transplantation Immunology and Nephrology, Department of Biomedicine, University Basel, Basel, Switzerland
| | - G F Fischer
- Department for Blood Group Serology and Transfusion Medicine, Medical University Vienna, Vienna, Austria
| | - J Mytilineos
- Institute of Clinical Transfusion Medicine and Immunogenetics, University Hospital of Ulm, Ulm, Germany
| | - M Hallensleben
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - W E Hitzler
- Transfusion Center, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - C Seidl
- German Red Cross Blood Donor Service, Institute for Transfusion Medicine and Immunohaematology, Frankfurt, Germany
| | - B M Spriewald
- Department of Internal Medicine 5 - Hematology and Oncology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
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11
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Tu B, Masaberg C, Hou L, Behm D, Brescia P, Cha N, Kariyawasam K, Lee JH, Nong T, Sells J, Tausch P, Yang R, Ng J, Hurley CK. Combining one-step Sanger sequencing with phasing probe hybridization for HLA class I typing yields rapid, G-group resolution predicting 99% of unique full length protein sequences. HLA 2017; 89:90-97. [PMID: 28102036 DOI: 10.1111/tan.12951] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 06/30/2016] [Revised: 09/09/2016] [Accepted: 11/25/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Sanger-based DNA sequencing of exons 2+3 of HLA class I alleles from a heterozygote frequently results in two or more alternative genotypes. This study was undertaken to reduce the time and effort required to produce a single high resolution HLA genotype. MATERIALS AND METHODS Samples were typed in parallel by Sanger sequencing and oligonucleotide probe hybridization. This workflow, together with optimization of analysis software, was tested and refined during the typing of over 42,000 volunteers for an unrelated hematopoietic progenitor cell donor registry. Next generation DNA sequencing (NGS) was applied to over 1000 of these samples to identify the alleles present within the G group designations. RESULTS Single genotypes at G level resolution were obtained for over 95% of the loci without additional assays. The vast majority of alleles identified (>99%) were the primary allele giving the G groups their name. Only 0.7% of the alleles identified encoded protein variants that were not detected by a focus on the antigen recognition domain (ARD)-encoding exons. CONCLUSION Our combined method routinely provides biologically relevant typing resolution at the level of the ARD. It can be applied to both single samples or to large volume typing supporting either bone marrow or solid organ transplantation using technologies currently available in many HLA laboratories.
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Affiliation(s)
- Bin Tu
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Carly Masaberg
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Lihua Hou
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | | | - Peter Brescia
- One Lambda Inc. (Thermo Fisher Scientific), Canoga Park, California
| | - Nuri Cha
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Kanthi Kariyawasam
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Jar How Lee
- One Lambda Inc. (Thermo Fisher Scientific), Canoga Park, California
| | - Thoa Nong
- One Lambda Inc. (Thermo Fisher Scientific), Canoga Park, California
| | | | - Paul Tausch
- One Lambda Inc. (Thermo Fisher Scientific), Canoga Park, California
| | - Ruyan Yang
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Jennifer Ng
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
| | - Carolyn Katovich Hurley
- Departments of Oncology and Pediatrics, Georgetown University, Washington, District of Columbia
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12
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Hou L, Vierra-Green C, Lazaro A, Brady C, Haagenson M, Spellman S, Hurley CK. Limited HLA sequence variation outside of antigen recognition domain exons of 360 10 of 10 matched unrelated hematopoietic stem cell transplant donor-recipient pairs. HLA 2016; 89:39-46. [PMID: 27976839 DOI: 10.1111/tan.12942] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/24/2016] [Accepted: 11/17/2016] [Indexed: 12/27/2022]
Abstract
Traditional DNA-based typing focuses primarily on interrogating the exons of human leukocyte antigen (HLA) genes that form the antigen recognition domain (ARD). The relevance of mismatching donor and recipient for HLA variation outside the ARD on hematopoietic stem cell transplantation (HSCT) outcomes is unknown. This study was designed to evaluate the frequency of variation outside the ARD in 10 of 10 (HLA-A, -B, -C, -DRB1, -DQB1) matched unrelated donor transplant pairs (n = 360). Next-generation DNA sequencing was used to characterize both HLA exons and introns for HLA-A, -B, -C alleles; exons 2, 3 and the intervening intron for HLA-DRB1 and exons only for HLA-DQA1 and -DQB1. Over 97% of alleles at each locus were matched for their nucleotide sequence outside of the ARD exons. Of the 4320 allele comparisons overall, only 17 allele pairs were mismatched for non-ARD exons, 41 for noncoding regions and 9 for ARD exons. The observed variation between donor and recipient usually involved a single nucleotide difference (88% of mismatches); 88% of the non-ARD exon variants impacted the amino acid sequence. The impact of amino acid sequence variation caused by substitutions in exons outside ARD regions in D-R pairs will be difficult to assess in HSCT outcome studies because these mismatches do not occur very frequently.
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Affiliation(s)
- L Hou
- Department of Pediatrics, Georgetown University, Washington, DC, USA
| | - C Vierra-Green
- Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA
| | - A Lazaro
- Department of Pediatrics, Georgetown University, Washington, DC, USA
| | - C Brady
- Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA
| | - M Haagenson
- Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA
| | - S Spellman
- Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA
| | - C K Hurley
- Department of Pediatrics, Georgetown University, Washington, DC, USA.,Department of Oncology, Georgetown University, Washington, DC, USA
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Couture V, Drouin R, Tan SL, Moutquin JM, Bouffard C. Cross-border reprogenetic services. Clin Genet 2014; 87:1-10. [PMID: 24798608 DOI: 10.1111/cge.12418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 02/28/2014] [Revised: 04/27/2014] [Accepted: 04/29/2014] [Indexed: 12/19/2022]
Abstract
The purpose of this review is to synthesize the current knowledge on the international movement of patients and biopsied embryo cells for pre-implantation genetic diagnosis and its different applications. Thus far, few attempts have been made to identify the specific nature of this phenomenon called 'cross-border reprogenetic services'. There is scattered evidence, both empirical and speculative, suggesting that these services raise major issues in terms of service provision, risks for patients and the children-to-come, the legal liabilities of physicians, as well as social justice. To compile this evidence, this review uses the narrative overview protocol combined with thematic analysis. Five major themes have emerged from the literature at the conjunction of cross-border treatments and reprogenetics: 'scope', 'scale', 'motivations', 'concerns', and 'governance'. Similar themes have already been observed in the case of other medical tourism activities, but this review highlights their singularity with reprogenetic services. It emphasizes the diagnostic and autologous feature of reprogenetics, the constant risk of misdiagnosis, the restriction on certain tests for medically controversial conditions, and the uncertain accessibility of genetic counseling in cross-border settings.
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Affiliation(s)
- V Couture
- Laboratory of Transdisciplinary Research in Genetics, Medicines and Social Sciences, Division of Genetics, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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14
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Shyti E, Idrizi A, Sulcebe G. Histocompatibility testing for organ transplantation purposes in Albania: a single center experience. Balkan Med J 2014; 31:121-5. [PMID: 25207182 DOI: 10.5152/balkanmedj.2014.13045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 04/05/2014] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Histocompatibility testing (HT) which includes donor-recipient human leukocyte antigen (HLA) matching, cross-match testing (XMT) and anti-HLA antibody searching are crucial examinations in solid organ transplantation aiming to avoid the hyperacute graft rejection and also to predict the immunological outcome of the graft. AIMS The aim of this study was to analyse the tissue typing data collected at the Laboratory of Immunology and Histocompatibility of the University Hospital Center of Tirana, Albania, in order to define those actions that should be taken for improvements in the situation of kidney transplantation in Albania. STUDY DESIGN Descriptive study. METHODS The donor/recipient cross-match testing was performed through a standard complement-dependent cytotoxicity (CDC) assay using separated donor T and B cells that were tested in parallel with the recipient serum sample. All recipient sera were screened for anti-Class I and anti-Class II HLA antibodies using a bead based Luminex anti-HLA antibody screening test. In the case of detected positivity, an allele-specific anti-HLA antibody determination was conducted with the respective Luminex anti-Class I and Class II HLA antibody determination kits. RESULTS A total of 174 recipients and 202 donors were typed for the purpose of living donor kidney transplantation at our laboratory between January 2006 and December 2012. The mean age and female gender proportion of patients were 34.9 years and 34.5%, respectively, and 48.0 years and 65.3% for the donors, respectively. Here, 25.9% of the patients reported a positive complement-dependent cytotoxicity cross-match test and/or a positive anti-HLA antibody testing result. Eighteen patients that were negative for the complement-dependent cytotoxicity cross-match test were positive for anti-HLA antibodies. CONCLUSION The predominant causes of end-stage renal disease (ESRD) in our patient population are chronic pyelonephritis and glomerulonephritis. The female gender is significantly more frequent among donors, which emphasises the need for more gender equity as far as the altruistic willingness for organ donation is concerned. The significant number of patients with Luminex anti-HLA antibody positivity combined with complement-dependent cytotoxicity cross-match negative results underlines the necessity of using additional methods like cell-based flow cytometry or bead-based Luminex anti-HLA antibody assays for the detection of anti-donor-specific antibodies. We also suggest that the number of kidney transplantations in Albania needs to be increased significantly by expanding it with paired exchange living donation and also by implementing an efficient deceased donor kidney transplantation program.
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Affiliation(s)
- Erkena Shyti
- Laboratory of Immunology and Histocompatibility, University Hospital Center "Mother Teresa", Tirana, Albania
| | - Alma Idrizi
- Department of Nephrology, University Hospital Center "Mother Teresa", Tirana, Albania
| | - Genc Sulcebe
- Laboratory of Immunology and Histocompatibility, University Hospital Center "Mother Teresa", Tirana, Albania
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Abstract
The human major histocompatibility complex HLA is located on the short arm of chromosome 6. It is known to be the most polymorphic genetic system in humans. The biological role of the HLA class I and class II molecules is to present processed peptide antigens. The HLA system is clinically important as transplantation antigens. Molecular HLA allele typing is routinely performed to provide HLA class I and class II allele matching in unrelated donor hematopoietic stem cell transplantation. Prospective lymphocyte crossmatching is critical in solid organ transplantation to prevent allograft rejection. HLA alloimmunization causes various problems in transfusion therapy. The HLA system is associated with certain diseases, but its underlying mechanisms are not yet fully explained.
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Affiliation(s)
- Sung Yoon Choo
- Department of Pathology, Mount Sinai School of Medicine, New York, NY 10029, USA.
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