PMID- 33193311 OWN - NLM STAT- MEDLINE DCOM- 20210428 LR - 20240330 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 11 DP - 2020 TI - HLA-A, -B, -C, -DRB1, -DQB1, and -DPB1 Allele and Haplotype Frequencies of 28,927 Saudi Stem Cell Donors Typed by Next-Generation Sequencing. PG - 544768 LID - 10.3389/fimmu.2020.544768 [doi] LID - 544768 AB - Human leukocyte antigen (HLA) allele and haplotype frequency distribution varies widely between different ethnicities and geographical areas. Matching for HLA alleles is essential for successful related and unrelated stem cell transplantation. Among the Saudi population, data on HLA alleles and haplotypes are limited. A cross-sectional study was performed on 28,927 bone marrow donors. The most frequent HLA alleles were HLA-A(*)02:01:01G (20.2%), A(*)24:02:01G (7.5%); B(*)51:01:01G (19.0%), B(*)50:01:01G (12.3%); C(*)06:02:01G (16.7%), C(*)07:02:01G (12.2%); DRB1(*)07:01:01 (15.7%), DRB1(*)03:01:01G (13.3%); DQB1(*)02:01:01G (29.9%), DQB1(*)03:02:01G (13.2%); and DPB1(*)04:01:01G (35.2%), DPB1(*)02:01:02G (21.8%). The most frequent HLA-A~C~B~DRB1~DQB1 haplotypes were A(*)02:01:01G~C(*)06:02:01G~B(*)50:01:01G~DRB1(*)07:01:01G~DQB1(*)02:01:01G (1.9%) and A(*)02:05:01G~C(*)06:02:01G~B(*)50:01:01G~DRB1(*)07:01:01G~DQB1(*)02:01:01G (1.6%). The most frequent HLA-A~C~B~DRB1~DQB1~DPB1 haplotypes were A(*)02:01:01G~C(*)15:02:01G~B(*)51:01:01G~DRB1(*)04:02~DQB1(*)03:02:01G~DPB1(*)04:01:0G (1%) and A(*)02:01:01G~C(*)07:02:01G~B(*)07:02:01G~DRB1(*)15:01:01G~DQB1(*)06:02:01G~ DPB1(*)04:01:01G (0.9%). Based on these haplotype frequencies, we provide forecasts for the fraction of patients with full matching and single mismatched donors for 3 to 6 loci depending on the registry size. With one million donors, about 50% of the patients would find an 8/8 match and 90% a 7/8 match. These data are essential for registry planning, finding unrelated stem cell donors, population genetic studies, and HLA disease associations. CI - Copyright (c) 2020 Jawdat, Uyar, Alaskar, Muller and Hajeer. FAU - Jawdat, Dunia AU - Jawdat D AD - Saudi Stem Cells Donor Registry, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia. FAU - Uyar, F Aytul AU - Uyar FA AD - Department of Physiology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey. FAU - Alaskar, Ahmed AU - Alaskar A AD - Department of Oncology, King Abdulaziz Medical City - Ministry of National Guard Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. FAU - Muller, Carlheinz R AU - Muller CR AD - ZKRD Zentrales Knochenmarkspender-Register fur die Bundesrepublik Deutschland, Ulm, Germany. FAU - Hajeer, Ali AU - Hajeer A AD - Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City - Ministry of National Guard Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. LA - eng PT - Journal Article DEP - 20201022 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (HLA-A Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-C Antigens) RN - 0 (HLA-DP beta-Chains) RN - 0 (HLA-DPB1 antigen) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adolescent MH - Adult MH - Female MH - *Gene Frequency MH - HLA-A Antigens/*genetics MH - HLA-B Antigens/*genetics MH - HLA-C Antigens/*genetics MH - HLA-DP beta-Chains/*genetics MH - HLA-DQ beta-Chains/*genetics MH - HLA-DRB1 Chains/*genetics MH - *Haplotypes MH - Humans MH - Male MH - Middle Aged MH - Saudi Arabia MH - *Stem Cells MH - *Tissue Donors PMC - PMC7643328 OTO - NOTNLM OT - Saudi Arabia OT - bone marrow registry OT - haplotype frequencies OT - population genetics OT - unrelated donors EDAT- 2020/11/17 06:00 MHDA- 2021/04/29 06:00 PMCR- 2020/01/01 CRDT- 2020/11/16 08:47 PHST- 2020/03/22 00:00 [received] PHST- 2020/08/18 00:00 [accepted] PHST- 2020/11/16 08:47 [entrez] PHST- 2020/11/17 06:00 [pubmed] PHST- 2021/04/29 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2020.544768 [doi] PST - epublish SO - Front Immunol. 2020 Oct 22;11:544768. doi: 10.3389/fimmu.2020.544768. eCollection 2020.