ASTELLAS-2138-CL-0101
Phase I
OPEN TO ACCRUAL
A Phase 1/1b Study of ASP2138 as Monotherapy and in Combination with Pembrolizumab and mFOLFOX6 or Ramucirumab and Paclitaxel in Participants with Metastatic or Locally Advanced Unresectable Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma and in Combination with mFOLFIRINOX in Participants with Metastatic or Locally Advanced Unresectable Pancreatic Adenocarcinoma Whose Tumors Have Claudin (CLDN) 18.2 Expression