The importance of epistasis in the evolution of viral pathogens.

ABSTRACT: Understanding the genetic and genomic underpinnings of infectious disease outbreaks has emerged as a frontier of epidemiology. Here, we argue that epistasis-where the phenotypic effects of mutations or gene variants are dictated by the presence of other mutations or genes-should become a focus of genomic epidemiology. To demonstrate this, we present the results of a systematic review of the literature on epistasis in viruses, focusing on three major human viral systems: (i) influenza, (ii) SARS-CoV-2, and (iii) human immunodeficiency virus, as well as two other bodies of the literature mainly focusing on nonhuman viruses: (iv) tobacco etch virus and (v) experimental evolution of viruses. Our systematic review of these five bodies of the literature highlights that epistasis is prevalent in

SUBMITTER: Manivannan SN 

PROVIDER: S-EPMC12694738 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature