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We read with interest the study by Koga H et al1 and we believe that in light of recent observations including our data (Table 1) the “desmoglein compensation theory” as a explanation for localization of blisters should be revisited 2,3,4. Although the disruption of desmoglein-dependent cell adhesion by autoantibodies is the basic pathophysiology underlying blister formation in pemphigus 2−4, the clinical spectrum does not always mirror this pathogenic process. Three clinical types of pemphigus have been described, the mucosal dominant, cutaneous and mucocutaneous type 2,,3,4 .