PMID- 35036093 OWN - NLM STAT- MEDLINE DCOM- 20230106 LR - 20230111 IS - 2167-8359 (Print) IS - 2167-8359 (Electronic) IS - 2167-8359 (Linking) VI - 10 DP - 2022 TI - KIR gene content imputation from single-nucleotide polymorphisms in the Finnish population. PG - e12692 LID - 10.7717/peerj.12692 [doi] LID - e12692 AB - The killer cell immunoglobulin-like receptor (KIR) gene cluster on chromosome 19 encodes cell surface glycoproteins that bind class I human leukocyte antigen (HLA) molecules as well as some other ligands. Through regulation of natural killer (NK) cell activity KIRs participate in tumour surveillance and clearing viral infections. KIR gene gene copy number variation associates with the outcome of transplantations and susceptibility to immune-mediated diseases. Inferring KIR gene content from genetic variant data is therefore desirable for immunogenetic analysis, particularly in the context of growing biobank genome data collections that rely on genotyping by microarray. Here we describe a stand-alone and freely available gene content imputation for 12 KIR genes. The models were trained using 807 Finnish biobank samples genotyped for 5900 KIR-region SNPs and analysed for KIR gene content with targeted sequencing. Cross-validation results demonstrate a high mean overall accuracy of 98.5% (95% CI [97.0-99.2]%) which compares favourably with previous methods including short-read sequencing based approaches. CI - (c)2022 Ritari et al. FAU - Ritari, Jarmo AU - Ritari J AD - Finnish Red Cross Blood Service, Helsinki, Finland. FAU - Hyvarinen, Kati AU - Hyvarinen K AD - Finnish Red Cross Blood Service, Helsinki, Finland. FAU - Partanen, Jukka AU - Partanen J AD - Finnish Red Cross Blood Service, Helsinki, Finland. FAU - Koskela, Satu AU - Koskela S AD - Finnish Red Cross Blood Service, Helsinki, Finland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220107 PL - United States TA - PeerJ JT - PeerJ JID - 101603425 RN - 0 (Receptors, KIR) MH - Humans MH - *Polymorphism, Single Nucleotide/genetics MH - Finland MH - *DNA Copy Number Variations MH - Receptors, KIR/genetics MH - Genotype PMC - PMC8744484 OTO - NOTNLM OT - Biobank OT - Imputation OT - KIR OT - Killer-cell immunoglobulin-like receptor OT - SNP OT - Single-nucleotide polymorphisms COIS- The authors declare there are no competing interests. EDAT- 2022/01/18 06:00 MHDA- 2022/01/18 06:01 PMCR- 2022/01/07 CRDT- 2022/01/17 06:01 PHST- 2021/08/26 00:00 [received] PHST- 2021/12/06 00:00 [accepted] PHST- 2022/01/17 06:01 [entrez] PHST- 2022/01/18 06:00 [pubmed] PHST- 2022/01/18 06:01 [medline] PHST- 2022/01/07 00:00 [pmc-release] AID - 12692 [pii] AID - 10.7717/peerj.12692 [doi] PST - epublish SO - PeerJ. 2022 Jan 7;10:e12692. doi: 10.7717/peerj.12692. eCollection 2022.