In the same subgroup of genetically tested patients, TACI mutation was found to be independently associated with ITP (OR = 46.53, 95% CI: 3.96–546.60, p = 0.002), even after adjusting for age, sex, and disease duration (Table 3 and Fig. 3). Here, TNFRSF13B is linked to autoimmune thrombocytopenic purpura.