Vactosertib in Combination with Pembrolizumab in Metastatic Colorectal or Gastric Cancer

"Vactosertib will be administered orally without regard to meals for 5 days per week (5D/W) at the same time in the morning (QD), at the same time in the morning and evening (BID) approximately 12 hours apart.~Pembrolizumab will be administered as a dose of 200 mg using a 30-minute IV infusion. Sites should make every effort to target infusion timing to be as close to 30 minutes as possible."