In particular, Veillonella, which has been reported to reduce the risk of asthma and bronchiolitis by inducing a mixed Th1/Th2/Th17 lung inflammatory response [180,181], was depleted among patients with active pemphigus, thus explaining the observed inverse correlation with anti-Dsg3 antibody titers [17]. This evidence concerns the gene DSG3 and pemphigus.