PMID- 30316972 OWN - NLM STAT- MEDLINE DCOM- 20190325 LR - 20190325 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 79 IP - 12 DP - 2018 Dec TI - Improved accuracy of clinical HLA genotyping by next-generation DNA sequencing affects unrelated donor search results for hematopoietic stem cell transplantation. PG - 848-854 LID - S0198-8859(18)30932-7 [pii] LID - 10.1016/j.humimm.2018.10.008 [doi] AB - Matching of human leukocyte antigen (HLA) genes is critically important in hematopoietic stem cell transplantation (HSCT). HLA genes are highly polymorphic and HLA matching has historically been limited by technologies that are unable to unambiguously determine HLA genotypes. Next generation DNA sequencing (NGS) overcomes these limitations by enabling near full-gene sequences with phase determination for heterozygous alleles. Here we examine the efficacy and utility of HLA-NGS in the clinical setting. In a 54-sample validation study and 955 patient samples subsequently tested using HLA-NGS, we observed significant improvement in the ability to unambiguously identify HLA genotypes in both the validation (97.3%) and clinical (97.4%) sample cohorts compared to previous standard-of care HLA genotyping methods. We modeled the clinical impact of this improved diagnostic ability by comparing National Marrow Donor Program (NMDP) search results for 56 patients using HLA-NGS genotypes and simulated standard-of-care HLA genotypes. Surprisingly, we observed significant differences in 7.1% of NMDP searches, with improved unambiguous HLA genotyping correlating with improved prediction of finding well-matched and partially-matched unrelated HSCT donors. These data demonstrate that HLA-NGS can provide highly accurate and unambiguous HLA genotyping that facilitates donor selection for allogeneic HSCT. CI - Copyright (c) 2018. Published by Elsevier Inc. FAU - Allen, Elizabeth S AU - Allen ES AD - Department of Pathology, University of California San Diego, La Jolla, CA, USA. FAU - Yang, Bing AU - Yang B AD - Department of Pathology, University of California San Diego, La Jolla, CA, USA. FAU - Garrett, Jodi AU - Garrett J AD - Division of Bone Marrow Transplantation, University of California San Diego, La Jolla, CA, USA. FAU - Ball, Edward D AU - Ball ED AD - Division of Bone Marrow Transplantation, University of California San Diego, La Jolla, CA, USA. FAU - Maiers, Martin AU - Maiers M AD - Center for International Blood and Marrow Transplant Research, Milwaukee, WI, USA. FAU - Morris, Gerald P AU - Morris GP AD - Department of Pathology, University of California San Diego, La Jolla, CA, USA. Electronic address: gpmorris@ucsd.edu. LA - eng PT - Journal Article DEP - 20181011 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA Antigens) SB - IM MH - Alleles MH - Genotype MH - Genotyping Techniques/*methods MH - HLA Antigens/*genetics MH - Hematopoietic Stem Cell Transplantation/*methods MH - High-Throughput Nucleotide Sequencing/*methods MH - Histocompatibility Testing/methods MH - Humans MH - Reproducibility of Results MH - Transplantation, Homologous MH - *Unrelated Donors OTO - NOTNLM OT - HLA OT - Hematopoietic stem cell transplantation OT - Next-generation DNA sequencing EDAT- 2018/10/15 06:00 MHDA- 2019/03/26 06:00 CRDT- 2018/10/15 06:00 PHST- 2018/05/14 00:00 [received] PHST- 2018/09/10 00:00 [revised] PHST- 2018/10/10 00:00 [accepted] PHST- 2018/10/15 06:00 [pubmed] PHST- 2019/03/26 06:00 [medline] PHST- 2018/10/15 06:00 [entrez] AID - S0198-8859(18)30932-7 [pii] AID - 10.1016/j.humimm.2018.10.008 [doi] PST - ppublish SO - Hum Immunol. 2018 Dec;79(12):848-854. doi: 10.1016/j.humimm.2018.10.008. Epub 2018 Oct 11.