A Phase 1/1b Study of ASP2138 in Participants With Metastatic or Locally Advanced Unresectable Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma or Metastatic Pancreatic Adenocarcinoma Whose Tumors Have Claudin (CLDN) 18.2 Expression

Are you eligible to participate in this study?

You may be eligible for this study if you meet the following criteria:

  • Conditions:
    Gastric Adenocarcinoma
    Pancreatic Adenocarcinoma
  • Age: Between 18 Year(s) - 100 Year(s)
  • Gender: Male or Female
  • Other Inclusion Criteria:
    1. Participant’s tumor sample is positive for CLDN18.2 expression by central IHC testing
    2. Participant has radiographically-confirmed, locally advanced, unresectable or metastatic disease within 28 days prior to the first dose of study intervention
    3. Participant agrees not to participate in another interventional study while receiving study treatment in the present study

You may not be eligible for this study if the following are true:

    1. Participant has received other investigational agents, or antineoplastic therapy including immunotherapy or devices concurrently or within 21 days or 5 times the half-life, whichever is shorter, prior to first dose of study intervention administration
    2. Participant has had prior severe allergic reaction or intolerance to known ingredients of ASP2138 or other antibodies, including humanized or chimeric antibodies
    3. Participant has received systemic immunosuppressive therapy, including systemic corticosteroids 14 days prior to first dose of study intervention



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