Recently, Myets et al., published the clinical outcomes of 94 SARS-CoV-2-infected individuals with inborn errors of immunity (IEI), including 53 individuals with primary antibody deficiency, the causes of which include XLA, ARA, and CVID, and some patients with T cell deficiency due to loss-of-function mutations in ZAP70, PGM3, STAT3, and ARPC1B 67. Here, ARPC1B is linked to congenital T-cell immunodeficiency.