Analgesic Efficacy and Safety of Topical VMD-3866 Gel in Management of Pain Induced by Chemotherapy (CIPN)

This is a Phase 2a double-blind, randomized, crossover repeated-dose trial of VMD-3866 topical gel in patients diagnosed with CIPN. Enrolment of up to 16 participants is planned. Each participant will have 2 treatment periods, separated by a washout of at least 7 days. Participants will be randomized 1:1 to receive VMD-3866 gel in one period, and placebo gel in the other. Before the start of each treatment period, participants will have a Run-in period lasting 7 days, during which they will record NPRS scores each morning in a trial diary. Participants will continue to record NPRS scores in the trial diary during treatment periods 1 and 2 (about 1 h after each dose). Participants will be screened within 45 days before their first treatment period. Eligible participants may attend an outpatient visit up to 14 days before their first dose of VMD-3866 or placebo, for baseline QST and, in ≥ 8 participants, a skin biopsy. Participants will visit the site for their first and last doses (Days 1 and 8) in each treatment period. All other doses they will self-administer at home. At the end of each treatment period, participants will undergo QST assessment and a skin biopsy if they had one at baseline. They will have a follow-up via telephone call 7-14 days after their last topical dose, or 7-14 days after the last skin biopsy (whichever is later).