暂无摘要。

BACKGROUND: Cutaneous adverse events are common with programmed death 1 (PD-1)/programmed death ligand 1 (PD-L1) inhibitors. However, the nature of the specific cutaneous adverse event of dermatitis has not been investigated across various PD-1/PD-L1 inhibitors. Oncologic outcomes potentially associated with dermatitis are not well characterized.
OBJECTIVE: To assess the nature of dermatitis after exposure to a PD-1/PD-L1 inhibitor and oncologic outcomes associated with dermatitis.
METHODS: Retrospective, matched, case-control study conducted at a single academic center.
RESULTS: The most common histologic patterns were lichenoid dermatitis (50%) and spongiotic dermatitis (40%). The overall tumor response rate was 65.0% for the case patients and 17.0% for the controls (P = .0007) (odds ratio, 7.3; 95% confidence interval, 2.3-23.1). The progression-free survival and overall survival times were significantly longer for the case patients than for the controls by Kaplan-Meier analysis (P < .0001 and .0203, respectively).
CONCLUSIONS: The retrospective design and relatively small sample size precluded matching for all cancer types.
CONCLUSIONS: Lichenoid and spongiotic dermatitis associated with PD-1/PD-L1 inhibitors could be a sign of robust immune response and improved oncologic outcomes. The value of PD-1/PD-L1-related dermatitis in predicting cancer outcomes awaits investigation through prospective multicenter studies for specific cancer types.

BACKGROUND: Tumor necrosis factor-α (TNF-α) inhibitors, such as infliximab, adalimumab, and certolizumab pegol are effective agents in the treatment of inflammatory bowel disease. Some individuals undergoing anti-TNF-α therapy for Crohn\'s disease or ulcerative colitis develop psoriasiform lesions. This is a paradoxical finding, as classical psoriasis is known to respond to these agents.
OBJECTIVE: The clinical features of anti-TNF-α-induced psoriatic dermatitis are described.
METHODS: A 60-year-old man with Crohn\'s disease treated with infliximab, who developed anti-TNF-α-induced psoriasiform dermatitis, is described.
RESULTS: The man developed erythematous skin lesions in the bilateral axillae two years after beginning infliximab treatment for Crohn\'s disease. Biopsy revealed psoriasiform dermatitis, consistent with a diagnosis of anti-TNF-α-induced psoriasiform dermatitis. He was treated with clobetasol 0.05% ointment twice daily for two weeks and had significant improvement. Subsequently, he used the corticosteroid ointment two days per week and calcipotriene 0.005% ointment twice daily for five days per week to achieve and maintain clear skin.
CONCLUSIONS: Anti-TNF-α-induced psoriasiform dermatitis is an infrequent complication of infliximab therapy. However, the condition may require discontinuation of the anti-TNF-α agent. Anti-TNF-α-induced psoriasiform dermatitis should be considered in the differential diagnosis when evaluating a new erythematous skin condition in an individual with a history of inflammatory bowel disease who is being treated with a TNF-α inhibitor.