The beneficial and pathogenic roles of complement in COVID-19.

Kim, Alfred H J; Wu, Xiaobo; Atkinson, John P · Cleve Clin J Med · 2020

Level V

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Abstract

We briefly summarize the complement system and its functions in immunity and disease. We present data supporting the requirement of complement to resolve COVID-19, and discuss how complement overactivation later in severe disease could drive multiorgan damage characteristic of fatal COVID-19.