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COVID-19 research v0.171 NOS2 Sophie Hambleton reviewed gene: NOS2: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: ; Mode of inheritance: None
COVID-19 research v0.127 NOS2 Ivone Leong Classified gene: NOS2 as Green List (high evidence)
COVID-19 research v0.127 NOS2 Ivone Leong Gene: nos2 has been classified as Green List (High Evidence).
COVID-19 research v0.126 NOS2 Ivone Leong gene: NOS2 was added
gene: NOS2 was added to Viral susceptibility. Sources: Expert list
Mode of inheritance for gene: NOS2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NOS2 were set to 31995689; 11207313
Review for gene: NOS2 was set to GREEN
Added comment: NOS2 is part of the list of genes that confer susceptibility to viral infections on the COVID Human Genetic Effort website (https://www.covidhge.com/).

PMID: 31995689 describes a 51 year old man from Iran who had an acute cytomegalovirus (CMV) infection which progressed to CMV disease and later died from it. The researchers found a homozygous variant that causes a frameshift mutation in NOS2 that caused NOS2 deficiency, which might cause the patient to be more susceptible to lethal CMV infection. It is rare for CMV to cause fatality in healthy people; however, Nos2 knockout mice are susceptible to lethal infection with murine CMV (PMID: 11207313).

Based on the above evidence NOS2 has been given Green gene status.
Sources: Expert list