At month 3, titers of anti-BP180 autoantibodies were strongly correlated with BPDAI (rho = 0.626, P  value = 0.000) and ABSIS (rho = 0.625, P  value = 0.000) values, as well as with the BPDAI component for the intensity of pruritus (rho = 0.625, P  value = 0.000). Here, COL17A1 is linked to Pruritus.