Ten patients had “undetectable” RORγt, including those with CVID (P433), periodic fever (P238), STAT1 (P54), WAS (P154), chronic muco-cutaneous candidiasis (P379), two with neutropenia (P63 and P66), and three with SCID (P140, P394, and P365). The gene discussed is WAS; the disease is common variable immunodeficiency.