Mirdametinib

This study is designed to assess Mirdametinib safety and efficacy in two phases: phase 1 tests the safety of up to four dose regimens of Mirdametinib, administered continuously or intermittently (3 weeks on/1 week off) to identify up to two recommended phase 2 doses. Phase 2a of the study will test the safety and efficacy of the recommended phase 2 dose(s) in adults with NF1 and cNF.

This is a Phase 1/2a, open-label, non-randomized, multi-dose study of mirdametinib monotherapy in adults with NF1 and cNF. The study will be conducted in two phases: Phase 1 will test the safety of multiple dose regimens of mirdametinib, in order to identify a recommended phase 2 dose(s) for phase 2a. The phase 1 portion will enroll participants in dose regimens 1 to 3 concurrently.

Enrollment of participants to dose regimen 4 will be conducted only if no dose limiting toxicities (DLT) occurred in any of the three previous regimens within at least, the first three cycles. The study will continue until one of the following stopping conditions is met. * The RP2D(s) have been identified with sufficient accuracy.

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.

Live record on ClinicalTrials.gov →

• Meet the diagnostic criteria for NF12
• Have a minimum of 24 measurable cNF (2 target areas of ≥6 measurable cNF)
• a. Measurable is defined as: i. non-pedunculated (no stalk) ii. surrounded by uninvolved skin and not adjacent to another cNF lesion iii. measuring ≥ 0.5 cm in the longest diameter and ≥ 0.5 cm in height iv. the 24 cNF must be located in two Target Areas. One target area must be located on the back and must have at least 6 measurable cNF. The second target area can be in any of the following body regions with at least 6 cNF: head and neck; upper extremities; anterior chest wall, anterior abdominal wall; pelvic region/gluteal region; lower extremities.
• Participants must have cNF that meet eligibility criteria located within the two study designated target areas or outside of the target areas amenable to biopsy. If biopsy is taken within the target area there must be a minimum of 6 cNF remaining for long term surveillance after biopsy. Participants must be willing to undergo pre-, and on-treatment tumor biopsies providing fresh tumor tissue; there should be no contraindication for serial biopsy
• Karnofsky performance level of ≥ 80%.

Inclusion criteria as written on the registry, trimmed. The full list, with exclusions, is on the live record.