PMID- 26287376 OWN - NLM STAT- MEDLINE DCOM- 20160510 LR - 20231111 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 8 DP - 2015 TI - Race, Ethnicity and Ancestry in Unrelated Transplant Matching for the National Marrow Donor Program: A Comparison of Multiple Forms of Self-Identification with Genetics. PG - e0135960 LID - 10.1371/journal.pone.0135960 [doi] LID - e0135960 AB - We conducted a nationwide study comparing self-identification to genetic ancestry classifications in a large cohort (n = 1752) from the National Marrow Donor Program. We sought to determine how various measures of self-identification intersect with genetic ancestry, with the aim of improving matching algorithms for unrelated bone marrow transplant. Multiple dimensions of self-identification, including race/ethnicity and geographic ancestry were compared to classifications based on ancestry informative markers (AIMs), and the human leukocyte antigen (HLA) genes, which are required for transplant matching. Nearly 20% of responses were inconsistent between reporting race/ethnicity versus geographic ancestry. Despite strong concordance between AIMs and HLA, no measure of self-identification shows complete correspondence with genetic ancestry. In certain cases geographic ancestry reporting matches genetic ancestry not reflected in race/ethnicity identification, but in other cases geographic ancestries show little correspondence to genetic measures, with important differences by gender. However, when respondents assign ancestry to grandparents, we observe sub-groups of individuals with well- defined genetic ancestries, including important differences in HLA frequencies, with implications for transplant matching. While we advocate for tailored questioning to improve accuracy of ancestry ascertainment, collection of donor grandparents' information will improve the chances of finding matches for many patients, particularly for mixed-ancestry individuals. FAU - Hollenbach, Jill A AU - Hollenbach JA AD - Department of Neurology, University of California, San Francisco School of Medicine, San Francisco, California, United States of America. FAU - Saperstein, Aliya AU - Saperstein A AD - Department of Sociology, Stanford University, Stanford, California, United States of America. FAU - Albrecht, Mark AU - Albrecht M AD - Bioinformatics Research, National Marrow Donor Program, Minneapolis, Minnesota, United States of America. FAU - Vierra-Green, Cynthia AU - Vierra-Green C AD - Center for International Blood and Marrow Transplant Research, Minneapolis, Minnesota, United States of America. FAU - Parham, Peter AU - Parham P AD - Department of Structural Biology, Stanford University School of Medicine, Stanford, California, United States of America; Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, United States of America. FAU - Norman, Paul J AU - Norman PJ AD - Department of Structural Biology, Stanford University School of Medicine, Stanford, California, United States of America; Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, United States of America. FAU - Maiers, Martin AU - Maiers M AD - Bioinformatics Research, National Marrow Donor Program, Minneapolis, Minnesota, United States of America. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150819 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (HLA Antigens) SB - IM MH - Adult MH - Bone Marrow MH - Bone Marrow Transplantation/methods MH - Ethnicity/*genetics MH - Female MH - Genetics, Medical/methods MH - HLA Antigens/genetics MH - Humans MH - Male MH - Racial Groups/*genetics MH - Tissue Donors MH - Transplant Recipients PMC - PMC4545604 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/08/20 06:00 MHDA- 2016/05/11 06:00 PMCR- 2015/08/19 CRDT- 2015/08/20 06:00 PHST- 2015/03/01 00:00 [received] PHST- 2015/07/28 00:00 [accepted] PHST- 2015/08/20 06:00 [entrez] PHST- 2015/08/20 06:00 [pubmed] PHST- 2016/05/11 06:00 [medline] PHST- 2015/08/19 00:00 [pmc-release] AID - PONE-D-15-09043 [pii] AID - 10.1371/journal.pone.0135960 [doi] PST - epublish SO - PLoS One. 2015 Aug 19;10(8):e0135960. doi: 10.1371/journal.pone.0135960. eCollection 2015.