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Genomics ; 113(4): 1733-1741, 2021 07.
Article in English | MEDLINE | ID: covidwho-1171554

ABSTRACT

Interferon-induced membrane proteins (IFITM) 3 gene variants are known risk factor for severe viral diseases. We examined whether IFITM3 variant may underlie the heterogeneous clinical outcomes of SARS-CoV-2 infection-induced COVID-19 in large Arab population. We genotyped 880 Saudi patients; 93.8% were PCR-confirmed SARS-CoV-2 infection, encompassing most COVID-19 phenotypes. Mortality at 90 days was 9.1%. IFITM3-SNP, rs12252-G allele was associated with hospital admission (OR = 1.65 [95% CI; 1.01-2.70], P = 0.04]) and mortality (OR = 2.2 [95% CI; 1.16-4.20], P = 0.01). Patients less than 60 years old had a lower survival probability if they harbor this allele (log-rank test P = 0.002). Plasma levels of IFNγ were significantly lower in a subset of patients with AG/GG genotypes than patients with AA genotype (P = 0.00016). Early identification of these individuals at higher risk of death may inform precision public health response.


Subject(s)
COVID-19/genetics , Genetic Predisposition to Disease , Membrane Proteins/genetics , RNA-Binding Proteins/genetics , SARS-CoV-2/genetics , Adult , Aged , Aged, 80 and over , COVID-19/mortality , COVID-19/virology , Female , Genetic Association Studies , Genotype , Humans , Interferons/genetics , Male , Middle Aged , Polymorphism, Single Nucleotide/genetics , SARS-CoV-2/pathogenicity
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