Relationship between radiation therapy and bullous pemphigoid

Area of Science:

• Dermatology
• Oncology
• Autoimmune Diseases

Background:

• Bullous pemphigoid (BP) is an autoimmune subepidermal blistering disease.
• Understanding the specific characteristics of BP induced by medical treatments is crucial.

Purpose of the Study:

• To review the existing literature on radiation therapy (RT)-associated bullous pemphigoid.
• To characterize the clinical presentation, treatment response, and outcomes of RT-associated BP.

Main Methods:

• A comprehensive review of English language literature was conducted.
• The review focused on patients who developed BP during or up to 10 years after RT.

Main Results:

• 29 patients with RT-associated BP were identified; 86.2% were female, often treated for breast cancer.
• BP developed post-RT in 72% of cases, frequently localized to irradiated sites.
• Disease control, partial remission, and complete remission were reported in 12, 7, and 5 patients, respectively.

Conclusions:

• RT-associated BP may represent a distinct subset of bullous pemphigoid.
• This specific BP subset appears to follow a relatively benign clinical course.
• Further research into RT-induced autoimmune phenomena is warranted.