Most of the CVID patients in the Subset cohort (n = 40) had normal liver tests (bilirubin: median 7 μmol/l [range 2–24], aspartate aminotransferase [AST]: median 27 U/l [min–max: 16–74], alanine aminotransferase [ALT]: median 27 U/l [min–max 9–49], and alkaline phosphatase [ALP]: median 77 U/l [min–max 45–255]). Here, GPT is linked to common variable immunodeficiency.