PMID- 27679434 OWN - NLM STAT- MEDLINE DCOM- 20170601 LR - 20190722 IS - 1530-8561 (Electronic) IS - 0009-9147 (Linking) VI - 62 IP - 12 DP - 2016 Dec TI - Generation of Full-Length Class I Human Leukocyte Antigen Gene Consensus Sequences for Novel Allele Characterization. PG - 1630-1638 AB - BACKGROUND: Routine, high-resolution human leukocyte antigen (HLA) genotyping by next generation sequencing within clinical immunogenetics laboratories can now provide the full-length gene sequence characterization of fully phased HLA alleles. This powerful technique provides insights into HLA variation beyond the traditionally characterized antigen recognition domain, providing sequence annotation across the entire gene including untranslated and intronic regions and may be used to characterize novel alleles from massively parallel sequencing runs. METHODS: We evaluated the utility of the Omixon Holotype HLA assay to generate credible, fully phased full-length gene consensus sequences for 50 individuals at major histocompatibility complex, class I, A (HLA-A), HLA-B, and HLA-C loci (300 genotyped alleles in total) to identify and characterize novel class I HLA alleles using our downstream analytical pipeline. RESULTS: Our analysis revealed that 7.7% (23/300) of genotyped class I HLA alleles contain novel polymorphisms. Interestingly, all of the novel alleles identified by our analysis were found to harbor sequence variations within intronic regions of the respective locus. In total our analysis identified 17 unique novel class I HLA alleles from 23 of the 300 genotyped alleles and generated full-length gene sequence annotations for 9 previously incompletely annotated HLA class I allele sequences derived from 14 of the 300 genotyped alleles. CONCLUSIONS: The demonstrated utility of the Omixon Holotype HLA assay in combination with our downstream analytical framework to generate fully phased, full-length gene consensus sequences for the identification and characterization of novel HLA alleles, facilitates the study of HLA polymorphism beyond the antigen recognition domain in human health and disease. CI - (c) 2016 American Association for Clinical Chemistry. FAU - Clark, Peter M AU - Clark PM AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Duke, Jamie L AU - Duke JL AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Ferriola, Deborah AU - Ferriola D AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Bravo-Egana, Valia AU - Bravo-Egana V AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Vago, Tunde AU - Vago T AD - Omixon Biocomputing, Budapest, Hungary. FAU - Hassan, Aniqa AU - Hassan A AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Papazoglou, Anna AU - Papazoglou A AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Monos, Dimitri AU - Monos D AD - Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA; monosd@email.chop.edu. AD - Department of Pathology and Lab Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. LA - eng PT - Journal Article DEP - 20160927 PL - England TA - Clin Chem JT - Clinical chemistry JID - 9421549 RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Algorithms MH - *Alleles MH - *Consensus Sequence MH - Genotype MH - *High-Throughput Nucleotide Sequencing MH - Histocompatibility Antigens Class I/*genetics MH - Humans EDAT- 2016/09/30 06:00 MHDA- 2017/06/02 06:00 CRDT- 2016/09/29 06:00 PHST- 2016/05/20 00:00 [received] PHST- 2016/08/19 00:00 [accepted] PHST- 2016/09/30 06:00 [pubmed] PHST- 2017/06/02 06:00 [medline] PHST- 2016/09/29 06:00 [entrez] AID - clinchem.2016.260661 [pii] AID - 10.1373/clinchem.2016.260661 [doi] PST - ppublish SO - Clin Chem. 2016 Dec;62(12):1630-1638. doi: 10.1373/clinchem.2016.260661. Epub 2016 Sep 27.