TNFRSF13C and common variable immunodeficiency: Therefore, some scholars have proposed that if pathogenic mutations are found (excluding TNFRSF13B/TACI, TNFRSF13C/BAFFR, etc.), these patients will be removed from the overall diagnosis of CVID and reclassified as having a CVID-like disease caused by a specific mutation (Ameratunga, 2018; Ameratunga et al., 2018).