COL17A1 and Bartsocas-Papas syndrome 1: Izumi et al. (23) described seven gliptin-associated BPs and showed they differed significantly from conventional BP by the absences of inflammatory lesions and circulating autoantibodies targeting the BP180–NC16A epitope and the presence of autoantibodies targeting the mid-portion of BP180 (120-kDa ectodomain and LABD-97).