Bullous pemphigoid and dipeptidyl peptidase-4 inhibitors: a meta-analysis of randomized controlled trials.

In conclusion, available data from randomized controlled trials seem to confirm the association between DPP-4 inhibitors and bullous pemphigoid. This association could be limited to one molecule of the class (i.e., linagliptin), although data on other DPP4-i (e.g., vildagliptin) are insufficient to rule out similar detrimental effects.