Regarding the diagnoses after the characterization, 26 IGAD cases had sole IGAD, while bullous pemphigoid, linear IgA bullous dermatosis, and linear IgA/IgG bullous dermatosis were concomitant in 1, 1, and 2 cases, respectively (Table S3B in Supplementary Material). The gene discussed is CD79A; the disease is bullous pemphigoid.