Effects of dupilumab in type 1 neurofibromatosis coexisting with severe atopic dermatitis.

Neurofibromatosis type 1 still lacks established treatment options aimed at controlling the progression of neurofibromas as well as effective therapy for the neurogenic itch associated with the disease. We report the case of a 30-year-old Caucasian woman with type 1 neurofibromatosis coexisting with severe refractory atopic dermatitis. Dupilumab, a novel anti-IL-4 receptor alpha monoclonal antibody, the first biologic agent approved for atopic dermatitis, was the drug of choice in this case. We observed remission of atopic dermatitis and a remarkable reduction in the size and swelling of neurofibromas and in the related pruritus, that became evident after one month of treatment. After 18 months of therapy, no new neurofibromas were detected and preexistent lesions showed no increase in size. These findings are consistent with the hypothesis that dupilumab, a potent anti-inflammatory drug, may have a positive effect on type 1 neurofibromatosis by stopping the progression of preexisting neurofibromas and the onset of new lesions.

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