Cutaneous Neurofibroma

This study is designed to establish the foundation for a new therapy for neurofibromatosis Type I (NF1)-related cutaneous neurofibromas (cNFs) by assessing the feasibility and efficacy of IMLYGIC in adults with NF1 and cNFs who desire local treatment of their cNF due to disfigurement, progression, pain, itching or other concerns. This is a single institutional Phase 1 study with a safety run-in to assess the feasibility and efficacy of IMLYGIC monotherapy in NF1 patients with cNFs. Each 28-day treatment cycle will be defined as intralesional administration of IMLYGIC administered on day 1 and 21 of Cycle 1 and days 7 and 21 for Cycles 2-4 for up to 4 cycles.

This is a Phase 1/2a, open-label, non-randomized, multi-dose study of mirdametinib monotherapy in adults with NF1 and cNF. In both Phases of the study, participation in the study will comprise three periods: screening, treatment and post-study safety follow-up to be performed at the NF1 and cNF specialty center: Johns Hopkins University.