PMID- 35305830 OWN - NLM STAT- MEDLINE DCOM- 20220517 LR - 20220716 IS - 1879-1166 (Electronic) IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 83 IP - 6 DP - 2022 Jun TI - HLA-G 14-bp insertion/deletion polymorphism and risk of coronavirus disease 2019 (COVID-19) among Iraqi patients. PG - 521-527 LID - S0198-8859(22)00057-X [pii] LID - 10.1016/j.humimm.2022.03.005 [doi] AB - Human leukocyte antigen (HLA)-G molecules are proposed to influence susceptibility to coronavirus disease 2019 (COVID-19). A case-control study was conducted on 209 patients with COVID-19 and198 controls to assess soluble HLA-G (sHLA-G) levels and HLA-G 14-bp insertion [Ins]/deletion [Del] polymorphism. Results revealed that median levels of sHLA-G were significantly higher in serum of COVID-19 patients than in controls (17.92 [interquartile range: 14.86-21.15] vs. 13.42 [9.95-17.38] ng/mL; probability <0.001). sHLA-G levels showed no significant differences between patients with moderate, severe or critical disease. Del allele was significantly associated with the risk of COVID-19 (odds ratio = 1.89; 95% confidence interval = 1.44-2.48; corrected probability = 0.001), while a higher risk was associated with Del/Del genotype (odds ratio = 2.39; 95% confidence interval = 1.25-4.58; corrected probability = 0.048). Allele and genotype frequencies of HLA-G 14-bp Ins/Del polymorphism stratified by gender or disease severity showed no significant differences in each stratum. Further, there was no significant impact of genotypes on sHLA-G levels. In conclusion, sHLA-G levels were up-regulated in COVID-19 patients regardless of disease severity. Further, it is suggested that HLA-G 14-bp Ins/Del polymorphism is associated with COVID-19 risk. CI - Copyright (c) 2022 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. FAU - Ad'hiah, Ali H AU - Ad'hiah AH AD - Tropical-Biological Research Unit, College of Science, University of Baghdad, Baghdad, Iraq. Electronic address: dr.ahadhiah@sc.uobaghdad.edu.iq. FAU - Al-Bayatee, Noor T AU - Al-Bayatee NT AD - Biotechnology Department, College of Science, University of Baghdad, Baghdad, Iraq. LA - eng PT - Journal Article DEP - 20220315 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-G Antigens) SB - IM MH - *COVID-19/genetics MH - Case-Control Studies MH - Gene Frequency MH - Genetic Predisposition to Disease MH - Genotype MH - *HLA-G Antigens/genetics MH - Humans MH - *INDEL Mutation MH - Iraq PMC - PMC8920981 OTO - NOTNLM OT - 14-bp insertion/deletion polymorphism OT - 3'UTR OT - COVID-19 OT - HLA-G OT - SARS-CoV-2 COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/03/21 06:00 MHDA- 2022/05/18 06:00 PMCR- 2022/03/15 CRDT- 2022/03/20 20:25 PHST- 2022/01/31 00:00 [received] PHST- 2022/03/11 00:00 [revised] PHST- 2022/03/12 00:00 [accepted] PHST- 2022/03/21 06:00 [pubmed] PHST- 2022/05/18 06:00 [medline] PHST- 2022/03/20 20:25 [entrez] PHST- 2022/03/15 00:00 [pmc-release] AID - S0198-8859(22)00057-X [pii] AID - 10.1016/j.humimm.2022.03.005 [doi] PST - ppublish SO - Hum Immunol. 2022 Jun;83(6):521-527. doi: 10.1016/j.humimm.2022.03.005. Epub 2022 Mar 15.