Antitumor Activity of Vactosertib in Combination With Pembrolizumab in Acral and Mucosal Melanoma Patients Progressed From Prior Immune Check Point Inhibitor

Summary

This trial is a multicenter, single arm study of efficacy of vactosertib in combination with pembrolizumab in advanced acral or mucosal melanoma patients progressed prior treatment including immunotherapy or targeted therapy and chemotherapy. This trial will be conducted though Korean Cancer Study Group (KCSG). The KCSG is responsible for the project management of the trial. Patient recruitment will take at 4 institutions. Participants will be treated for up to 35 cycles (approximately 2 years) after initiation of treatment with intravenous 200mg of pembrolizumab every 3 weeks in combination with vactosertib. Vactosertib will be given orally for 200mg, bid for 5 days (from Mon. to Fri.) per week. This study will use ORR based on RECIST 1.1 and modified RECIST 1.1 (immune related RECIST) criteria as the primary endpoint and the tumor assessment will be done every 6 weeks. Secondary endpoints are DCR, PFS, OS, and safeties. Exploratory biomarkers predictive biomarker candidates (e.g., level of PD-L1 tumor expression, EMT marker, PD-L1, TGF-β RII, and pSMAD2) in tumor tissue and ctDNA in blood will be investigated in both pre-treatment and post-treatment periods.

Timeline

Start

2023-02-09

Primary completion

2025-03-10

Completion

2025-03-10

Drugs

Indications