This is a non-randomized, multicenter, open-label, multi-cohort, phase II trial to evaluate the efficacy and safety of Rego-Tisle in adult patients with solid tumors that are advanced, pretreated and refractory to standard therapy. Approximately 322 evaluable patients (between 15 and 82 per cohort) in around 65 sites will be enrolled to power the trial efficiently to measure the primary endpoint, Progression Free Survival at 6 months (PFS-6).~Patients should have at least one measurable lesion per Response Evaluation Criteria in Solid Tumors guidelines version 1.1 (RECIST 1.1), an Eastern Cooperative Oncology Group Performance Scale (ECOG PS) 0-1, and adequate organ function.~The trial will include patients who had been diagnosed with a histologically or cytologically confirmed solid tumor belonging to any of the types in the cohorts to be enrolled. To be eligible, patient must meet the criteria for tumor type, stage and prior anti-cancer therapy according to inclusion criteria.
REFIT-MSS is a non-randomized, multicenter, open-label, multi-cohort, 2-stage, phase II trial to evaluate the efficacy and safety of regorafenib in combination with tislelizumab (referred as Rego-Tisle) in adult patients with select advance, previously treated, Mismatch Repair-Proficient/Microsatellite (pMMR/MSS) stable solid cancers.~The multi-cohort design will allow for the examination of 8 separate cohorts of different cancers to determine whether further examination may be warranted in the individual indications.