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Updated: Jan 22, 2026

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
Published on: June 17, 2025
A Severe, Refractory Case of Mucous Membrane Pemphigoid After Treatment With Pembrolizumab: Brief Communication
Letícia Mello Bezinelli1, Fernanda P Eduardo1, Cesar A Migliorati2
1Hospital Israelita Albert Einstein.
Abstract:
Pembrolizumab is a humanized antibody that targets the programmed death-1 receptor expressed in T cells with high selectivity. This therapeutic is of great importance in cancer immunotherapy yet managing the potential immune-related adverse events remains a concern. Here, we report a rare case of mucous membrane pemphigoid in the oral mucosa, upper respiratory tract, and conjunctiva of a patient with ovarian adenocarcinoma without cutaneous manifestation, which persisted even after pembrolizumab discontinuation. A brief review of pembrolizumab-related bullous pemphigoid cases is presented and possible mechanisms underlying these lesions are discussed.
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