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Grubic Z, Maskalan M, Stingl Jankovic K, Burek Kamenaric M, Zunec R. An intermediate-sized donor registry experience: HLA barriers in matching procedures. HLA 2024; 103:e15348. [PMID: 38265197 DOI: 10.1111/tan.15348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/18/2023] [Accepted: 01/03/2024] [Indexed: 01/25/2024]
Abstract
The data enabling the estimation of the possibility of finding a matched unrelated donor (MUD) within a relatively short time is important for the success of hematopoietic stem cell transplantation (HSCT). In the present study, 738 unrelated Croatian patients in the program of unrelated HSCT were retrospectively analyzed for gender matching, donor origin (national or international), the distribution of HLA alleles and haplotypes, as well as for the probability of finding a 9-10/10 MUD. Almost 70% of the patients in our study group had a 10/10 MUD, while among the patients with a 9/10 MUD, a 1st field resolution level mismatched donor was selected for 55.0% of patients. The majority of pairs were HLA-A mismatched (33.8%). A comparison of HLA allele frequencies between two subgroups of patients revealed significant differences for 13 alleles. However, after p value correction, the difference in frequency remained significant only for four alleles; three HLA alleles (B*08:01, C*07:01, and DRB1*03:01) demonstrated a significantly higher frequency among patients with a 10/10 MUD (Pcorr < 0.0001, Pcorr = 0.0096, and Pcorr < 0.0001, respectively), while the B*35:08 allele was significantly more present among patients with a 9/10 MUD (Pcorr = 0.0328). The comparison of the distribution of HLA haplotypes between patients with a 10/10 MUD and patients with a 9/10 MUD showed significant differences for a number of two-locus and three-locus haplotypes, as well as for one five-locus haplotype (HLA-A*01:01~B*08:01~C*07:01~DRB1*03:01~DQB1*02:01), which was significantly more present in the group of patients with a 10/10 MUD. At least one HLA haplotype from the group of non-frequent HLA haplotypes (positions >1000) was carried by patients with a 9/10 MUD. The data obtained by the present study will contribute to a better estimation of the probability of finding a suitable 9-10/10 MUD for Croatian patients in need of HSCT.
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Affiliation(s)
- Zorana Grubic
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Marija Maskalan
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Katarina Stingl Jankovic
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Marija Burek Kamenaric
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Renata Zunec
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
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Grubic Z, Maskalan M, Burek Kamenaric M, Desnica L, Mikulic M, Stingl Jankovic K, Durakovic N, Serventi Seiwerth R, Vrhovac R, Zunec R. Alternative donor strategy in unrelated hematopoietic stem cell transplantation - outcome with mismatched donors. Adv Med Sci 2023; 68:332-340. [PMID: 37741003 DOI: 10.1016/j.advms.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/06/2023] [Accepted: 09/06/2023] [Indexed: 09/25/2023]
Abstract
PURPOSE This study retrospectively investigated the association between the level of human leukocyte antigen (HLA) mismatches (MMs), direction of disparities and differences at particular HLA locus on clinical outcomes of hematopoietic stem cell transplantation (HSCT). Investigated outcomes were overall survival (OS) and disease-free survival (DFS), graft-versus-host disease (GvHD), relapse and non-relapse mortality (NRM). PATIENTS AND METHODS Study cohort included 108 adult patients transplanted between 2011 and 2021 and their 9/10 mismatched unrelated donors (MMUD). All individuals were typed for HLA-A, -B, -C, -DRB1, -DQB1 and -DPB1 loci using Polymerase Chain Reaction-Sequence Specific Primers, PCR-Sequence Based Typing and Next-Generation Sequencing. All statistical analyses were done in the MedCalc software, version 19.2.6. RESULTS Patients with MMs at HLA-B locus demonstrated worse OS (P = 0.0440, HR = 2.00, n = 20). Absence of HLA-DRB5 was associated with a higher incidence of GvHD (P = 0.0112, HR = 1.93, n = 67). A lower incidence of GvHD was observed in patients with HLA class II MMs compared to patients with HLA class I MMs (P = 0.0166, HR = 1.94, n = 29). Finally, analysis of PIRCHE score (PS) impact revealed that patients with HLA class II PS > 10 in GvH direction showed higher incidence of GvHD compared to patients with HLA class II PS < 10 (P = 0.0073, HR = 2.01, n = 55). CONCLUSION Obtained results undisputedly indicate the necessity to further investigate this matter on a larger patient group, with focus on specific HLA alleles to define precisely priority criteria for selecting the best donor for all patients, thus improving the outcome of HSCT with an MMUD.
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Affiliation(s)
- Zorana Grubic
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia.
| | - Marija Maskalan
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Marija Burek Kamenaric
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Lana Desnica
- Department of Hematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Mirta Mikulic
- Department of Hematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Katarina Stingl Jankovic
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Nadira Durakovic
- Department of Hematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Ranka Serventi Seiwerth
- Department of Hematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Radovan Vrhovac
- Department of Hematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Renata Zunec
- Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
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Van Son C, Loan NTH, Trang TH, Thinh LX, Khanh NB, Nhung LTH, Van Hung N, Que TN, Van Lieu N, Tung PD, Van Anh NT, Thang ND. Predominant HLA Alleles and Haplotypes in Mild Adverse Drug Reactions Caused by Allopurinol in Vietnamese Patients with Gout. Diagnostics (Basel) 2021; 11:diagnostics11091611. [PMID: 34573954 PMCID: PMC8468422 DOI: 10.3390/diagnostics11091611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/31/2021] [Accepted: 08/31/2021] [Indexed: 12/19/2022] Open
Abstract
Allopurinol (ALP) is commonly used as a drug for gout treatment. However, ALP is known to cause cutaneous adverse reactions (CARs) in patients. The HLA-B*58:01 allele is considered a biomarker of severe CAR (SCAR) in patients with gout, with symptoms of Stevens Johnson syndrome, and with toxic epidermal necrolysis. However, in patients with gout and mild cutaneous adverse drug reactions (MCARs), the role of HLA-allele polymorphisms has not been thoroughly investigated. In this study, 50 samples from ALP-tolerant patients and ALP-induced MCARs patients were genotyped in order to examine the polymorphisms of their HLA-A and HLA-B alleles. Our results showed that the frequencies of HLA-A*02:01/HLA-A*24:02 and HLA-A*02:01/HLA-A*29:01, the dual haplotypes in HLA-A, in patients with ALP-induced MCARs were relatively high, at 33.3% (7/21), which was HLA-B*58:01-independent, while the frequency of these dual haplotypes in the HLA-A locus in ALP-tolerant patients was only 3.45% (1/29). The HLA-B*58:01 allele was detected in 38% (8/21) of patients with ALP-induced MCARs, and in 3.45% (1/29) of ALP-tolerant patients. Notably, although HLA-B*58:01 may be a cause for the occurrence of MCARs in patients with gout, this correlation was not as strong as that previously reported in patients with SCAR. In conclusion, in addition to the HLA-B*58:01 allele, the presence of the dual haplotypes of HLA-A*02:01/HLA-A*24:02 and/or HLA-A*02:01/HLA-A*29:01 in the HLA-A locus may also play an important role in the appearance of ALP-induced MCARs in the Vietnamese population. The obtained primary data may contribute to the development of suitable treatments for patients with gout not only in Vietnam but also in other Asian countries.
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Affiliation(s)
- Chu Van Son
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University-Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam; (C.V.S.); (N.T.H.L.); (L.T.H.N.)
| | - Nguyen Thi Hong Loan
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University-Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam; (C.V.S.); (N.T.H.L.); (L.T.H.N.)
| | - Tran Huyen Trang
- Department of Internal Medicine, Hanoi Medical University, 1 Ton That Tung, Dong Da, Hanoi 116001, Vietnam; (T.H.T.); (N.V.H.)
- Department of Rheumatology, Bach Mai Hospital, 78 Giai Phong, Phuong Mai, Dong Da, Hanoi 116305, Vietnam; (L.X.T.); (N.B.K.)
| | - Le Xuan Thinh
- Department of Rheumatology, Bach Mai Hospital, 78 Giai Phong, Phuong Mai, Dong Da, Hanoi 116305, Vietnam; (L.X.T.); (N.B.K.)
| | - Nguyen Ba Khanh
- Department of Rheumatology, Bach Mai Hospital, 78 Giai Phong, Phuong Mai, Dong Da, Hanoi 116305, Vietnam; (L.X.T.); (N.B.K.)
| | - Le Thi Hong Nhung
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University-Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam; (C.V.S.); (N.T.H.L.); (L.T.H.N.)
| | - Nguyen Van Hung
- Department of Internal Medicine, Hanoi Medical University, 1 Ton That Tung, Dong Da, Hanoi 116001, Vietnam; (T.H.T.); (N.V.H.)
- Department of Rheumatology, Bach Mai Hospital, 78 Giai Phong, Phuong Mai, Dong Da, Hanoi 116305, Vietnam; (L.X.T.); (N.B.K.)
| | - Tran Ngoc Que
- Stem Cell Bank, National Institute of Hematology and Blood Transfusion, Pham Van Bach, Cau Giay, Hanoi 122000, Vietnam;
| | - Nguyen Van Lieu
- Department of Neuroscience, Tam Anh General Hospital, 108 Hoang Nhu Tiep, Bo De, Long Bien, Hanoi 125300, Vietnam;
| | - Pham Dinh Tung
- Department of Probability and Statistics, Faculty of Mathematics-Mechanics-Informatics, VNU University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam;
| | - Nguyen Thi Van Anh
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University-Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam; (C.V.S.); (N.T.H.L.); (L.T.H.N.)
- Correspondence: (N.T.V.A.); (N.D.T.)
| | - Nguyen Dinh Thang
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University-Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi 120017, Vietnam; (C.V.S.); (N.T.H.L.); (L.T.H.N.)
- Correspondence: (N.T.V.A.); (N.D.T.)
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Nicoloso G, Kürsteiner O, Bussmann F, Marbacher M, Tiercy JM. A study of selected hematopoietic stem cell donors provided by an intermediate size registry. Eur J Haematol 2019; 103:426-432. [PMID: 31385372 DOI: 10.1111/ejh.13307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/25/2019] [Accepted: 07/27/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Planning new hematopoietic stem cell (HSC) donor recruitment strategies requires a sound understanding of the factors underlying donor selection, especially considering HLA-matching criteria. METHOD A total of 182 consecutive workups of Swiss donors performed from 2014 to 2017 were analyzed for HLA match level, locus disparities, number of potentially 10/10 matched donors in the international database, donor ranking on the lists, donor date of registration, age, ABO, CMV, gender matching, patient genotype frequency, and country performing the search. RESULTS Matching status of the selected donors was 10/10 for 38.5%, 10-12/12 for 35.1%, and 8-9/10 for 26.4% donors, without differences in average donor age in the three categories. HLA-A and -C mismatches were most frequent and -DRB1 very rare. 8.2% patients were matched for HLA-DPB1 (12/12). ABO matching was 46.3%, and CMV matching was 59.1%. Based on "HaploStat"-derived genotype frequencies, 50.3% patients belonged to the "good," 38.5% to the "fair," and 11.2% to the "poor" search prognosis categories. 37.9% of transplants were gender-mismatched, and 42.3% of donors were female. CONCLUSION HLA typing quality (high resolution, all loci typed), great diversity of haplotypes and donor age are main factors impacting the selection of Swiss donors, while gender and ABO matching seem to be of secondary importance.
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Affiliation(s)
- Grazia Nicoloso
- Swiss Blood Stem Cells, Swiss Transfusion SRC Ltd, Bern, Switzerland
| | - Oliver Kürsteiner
- Swiss Blood Stem Cells, Swiss Transfusion SRC Ltd, Bern, Switzerland
| | - Felix Bussmann
- Swiss Blood Stem Cells, Swiss Transfusion SRC Ltd, Bern, Switzerland
| | - Monika Marbacher
- Swiss Blood Stem Cells, Swiss Transfusion SRC Ltd, Bern, Switzerland
| | - Jean-Marie Tiercy
- Swiss Blood Stem Cells, Swiss Transfusion SRC Ltd, Bern, Switzerland
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Determination of HLA-A, -B, and -DRB1 Allele and Haplotype Frequencies in the Croatian Population Based on a Family Study. Arch Immunol Ther Exp (Warsz) 2017; 64:83-88. [PMID: 28083619 DOI: 10.1007/s00005-016-0445-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 12/01/2016] [Indexed: 10/20/2022]
Abstract
In the present study, HLA allele and haplotype frequencies among Croatian families were investigated to evaluate valuable information about HLA genotypes and to compare them with data from the Croatian Bone Marrow Donor Registry (CBMDR). A total of 350 families which have been typed for the purpose of HSCT were included. All individuals were tested using PCR-SSO or PCR-SSP methods for HLA-A, -B, and -DRB1 alleles. The HLA-A-B-DRB1 haplotypes were determined by segregation and directly counted. A total of 30 HLA-A, 54 HLA-B, and 38 HLA-DRB1 alleles and 716 different HLA-A-B-DRB1 haplotypes were identified. Of these, the three most frequent alleles at HLA-A, -B, and -DRB1 loci, respectively, were A*02:01 (30.39%), A*11:01 (13.37%), A*24:02 (10.91%); B*51:01 (12.48%), B*18:01 (8.35%), B*08:01 (8.06%); DRB1*03:01 (11.20%), DRB1*01:01 (9.84%), DRB1*16:01 (9.63%). The following HLA alleles were detected only once: A*02:09, A*24:03, A*24:04, A*24:07; B*07:04, B*15:07, B*15:08, B*39:04, B*39:10, B*39:24, B*40:04; DRB1*08:03, DRB1*11:06, DRB1*13:32, DRB1*14:05. Five most frequent haplotypes were: A*01:01-B*08:01-DRB1*03:01 (5.34%), A*02:01-B*18:01-DRB1*11:04 (1.57%), A*02:01-B*27:02-DRB1*16:01 (1.50%), A*02:01-B*27:05-DRB1*01:01 (1.42%) and A*02:01-B*44:02:01G-DRB1*16:01 (1.28%). The haplotype frequencies based on the family study were compared with the frequencies from CBMDR, and similar results were obtained for all except for the HLA-A*26:01-B*38:01-DRB1*04:02 haplotype. A significantly higher frequency (P = 0.0017) of this haplotype was observed among family individuals. Nine haplotypes were unique and data about their frequencies do not exist in current databases. The data obtained in this study could be useful for anthropology, transplantation and disease association studies.
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van Walraven SM, Brand A, Bakker JNA, Heemskerk MBA, Nillesen S, Bierings MB, Bungener LB, Hepkema BG, Lankester A, van der Meer A, Sintnicolaas K, Somers JAE, Spierings E, Tilanus MGJ, Voorter CEM, Cornelissen JJ, Oudshoorn M. The increase of the global donor inventory is of limited benefit to patients of non-Northwestern European descent. Haematologica 2017; 102:176-183. [PMID: 27561721 PMCID: PMC5210248 DOI: 10.3324/haematol.2016.145730] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 08/22/2016] [Indexed: 11/09/2022] Open
Abstract
Between 2001 and 2012, the number of unrelated donors registered worldwide increased from 7 to 21 million, and the number of public cord blood units increased to over 500,000. We addressed the question of whether this expansion resulted in higher percentages of patients reaching transplantation. Unrelated donor searches were evaluated for 3,124 eligible patients in the Netherlands in two cohorts (2001-2006, n=995; 2007-2012, n=2129), comparing results for patients of Northwestern European and non-Northwestern European origin. Endpoints were 'donor found' and 'transplantation reached'. The substantial growth of the donor inventory over the period studied did not increase the median number of potential unrelated donors (n=7) for non-Northwestern European patients, but almost doubled the number for Northwestern European patients from 42 to 71. Before and after 2007, an unrelated donor or cord blood was identified for 91% and 95%, respectively, of Northwestern European patients and for 65% and 82% of non-Northwestern European patients (P<0.0001). Non-Northwestern European patients more often needed a cord blood transplant. The degree of HLA matching was significantly lower for non-Northwestern European patients (P<0.0006). The time needed to identify a donor decreased for both populations. The percentage of Northwestern European patients reaching transplantation increased from 77% to 83% and for non-Northwestern European patients from 57% to 72% (P=0.0003). The increase of the global inventory resulted in more transplants for patients lacking a family donor, although the quality and quantity of (potential) haematopoietic cell grafts for patients of a non-Northwestern European descent remained inferior, indicating the need for adaptation of recruitment.
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Affiliation(s)
| | - Anneke Brand
- Sanquin, Amsterdam, the Netherlands
- Leiden University Medical Center, Immunohematology and Blood Transfusion, Leiden
| | | | | | - Suzan Nillesen
- Stem Cell Donor Bank Europdonor Nijmegen, University Medical Center Nijmegen St. Radboud, the Netherlands
| | - Marc B Bierings
- University Medical Center Utrecht / Wilhelmina Kinderziekenhuis, Pediatric Stem Cell Transplantation Team, Leiden, the Netherlands
| | - Laura B Bungener
- University Medical Center Groningen, Laboratory for Transplant Immunology, Leiden, the Netherlands
| | - Bouke G Hepkema
- University Medical Center Groningen, Laboratory for Transplant Immunology, Leiden, the Netherlands
| | - Arjan Lankester
- Leiden University Medical Center, Willem Alexander Kinderziekenhuis, Department for Pediatric Stem Cell Transplantation, Leiden, the Netherlands
| | - Arnold van der Meer
- Stem Cell Donor Bank Europdonor Nijmegen, University Medical Center Nijmegen St. Radboud, the Netherlands
- Radboud University Medical Center, Laboratory Medical Immunology, Nijmegen, the Netherlands
| | - Kees Sintnicolaas
- Sanquin, Department of Transfusion Medicine, Rotterdam, the Netherlands
| | - Judith A E Somers
- Sanquin, Department of Transfusion Medicine, Rotterdam, the Netherlands
| | - Eric Spierings
- University Medical Center Utrecht, Department of Immunology, HLA laboratory, Maastricht, the Netherlands
| | - Marcel G J Tilanus
- University Hospital Maastricht, Transplantation Immunology, Tissue Typing Laboratory, Maastricht, the Netherlands
| | - Christien E M Voorter
- University Hospital Maastricht, Transplantation Immunology, Tissue Typing Laboratory, Maastricht, the Netherlands
| | - Jan J Cornelissen
- Erasmus University Medical Center, Department of Hematology, Rotterdam, the Netherlands
| | - Machteld Oudshoorn
- Europdonor Foundation, Leiden, the Netherlands
- Leiden University Medical Center, Immunohematology and Blood Transfusion, Leiden
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Grubic Z, Stingl Jankovic K, Maskalan M, Serventi-Seiwerth R, Mikulic M, Nemet D, Burek Kamenaric M, Labar B, Zunec R. The effect of HLA allele and haplotype polymorphisms on donor matching in hematopoietic stem cell transplantation - Croatian experience. Hum Immunol 2016; 77:1120-1127. [PMID: 27756586 DOI: 10.1016/j.humimm.2016.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 11/29/2022]
Abstract
The knowledge of HLA characteristics of a patient's population helps to predict the probability of finding a MUD. The study included 170 transplanted patients for whom a search for a MUD in BMDW was performed and a sample of 4000 volunteer unrelated donors from the Croatian Bone Marrow Donor Registry (CBMDR). Patients and their MUDs were typed for HLA-A, -B, -C, -DRB1, and -DQB1 loci using PCR-SSO and PCR-SSP methods while donors were typed for HLA-A, -B, -C, and -DRB1 loci using the PCR-SSO method. A comparison of allele frequencies at tested HLA loci between patients and donors from CBMDR did not reveal significant differences. The majority of patients (117, 68.8%) had a 10/10 MUD, 45 (26.5%) patients had a 9/10 MUD and eight (4.7%) patients had an 8/10 MUD. The highest number of mismatches (MM) was present at HLA-DRB1 (19; 31.1%). The presence of DRB1*11 and DRB1*04 allelic groups among patients caused allelic MMs at HLA-DRB1 in most cases. The presence of an infrequent HLA-B∼C haplotype resulted in the HLA-C MM at antigen level in the majority of cases. The present study clarified HLA factors that cause difficulties in searching for a 10/10 MUD for Croatian patients.
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Affiliation(s)
- Zorana Grubic
- Tissue Typing Centre, Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia.
| | - Katarina Stingl Jankovic
- Tissue Typing Centre, Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Marija Maskalan
- Tissue Typing Centre, Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Ranka Serventi-Seiwerth
- Department of Haematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Mirta Mikulic
- Croatian Bone Marrow Donor Registry, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Damir Nemet
- Department of Haematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Marija Burek Kamenaric
- Tissue Typing Centre, Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Boris Labar
- Department of Haematology, Internal Clinic, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Renata Zunec
- Tissue Typing Centre, Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
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Tiercy JM. How to select the best available related or unrelated donor of hematopoietic stem cells? Haematologica 2016; 101:680-7. [PMID: 27252513 DOI: 10.3324/haematol.2015.141119] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/09/2016] [Indexed: 11/09/2022] Open
Abstract
Recognition of HLA incompatibilities by the immune system represents a major barrier to allogeneic hematopoietic stem cell transplantation. HLA genotypically identical sibling donors are, therefore, the gold standard for transplantation purposes, but only 30% patients have such a donor. For the remaining 70% patients alternative sources of stem cells are a matched unrelated adult volunteer donor, a haploidentical donor or a cord blood unit. The definition of 'HLA matching' depends on the level of resolution and on which loci are tested. The development of HLA molecular typing technologies and the availability of more than 27 million donors in the international database has greatly facilitated unrelated donor searches. The gold standard is high resolution typing at the HLA-A, -B, -C, -DRB1, and -DQB1 loci (10/10 match). Single disparities for HLA-A, -B, - C, or -DRB1 are associated with increased risk of post-transplant complications, but less so in patients with advanced disease, and in those undergoing T-cell-depleted allografting. HLA-DQB1 mismatches seem to be better tolerated and some HLA-C, -DRB1 and -DPB1 disparities are potentially less immunogenic. HLA typing by next-generation sequencing methods is likely to change matching algorithms by providing full sequence information on all HLA loci in a single step. In most European populations a 10/10 matched donor can be found for at least 50% of patients and an additional 20-30% patients may have a 9/10 matched donor. Genetic factors that help in identifying donors with less immunogenic mismatches are discussed. Haploidentical donors are increasingly used as an alternative source of stem cells for those patients lacking a matched unrelated donor.
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Affiliation(s)
- Jean-Marie Tiercy
- National Reference Laboratory for Histocompatibility, Department of Genetic and Laboratory Medicine, University Hospitals Geneva, Switzerland
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