[Science] Auto-antibodies against type I IFNs in patients with life-threatening COVID-19
Science, 24 September 2020
, et al.
- Reported that at least 101 of 987 patients with life-threatening COVID-19 pneumonia had neutralizing IgG auto-Abs against IFN-ω (13 patients), the 13 types of IFN-α (36), or both (52), at the onset of critical disease; a few also had auto-Abs against the other three type I IFNs.
- The auto-Abs neutralize the ability of the corresponding type I IFNs to block SARS-CoV-2 infection in vitro.
- These auto-Abs were not found in 663 individuals with asymptomatic or mild SARS-CoV-2 infection and were present in only 4 of 1,227 healthy individuals.
- A B cell auto-immune phenocopy of inborn errors of type I IFN immunity underlies life-threatening COVID-19 pneumonia in at least 2.6% of women and 12.5% of men.