Phase 1/2 Study of IMC-R117C in Selected Advanced Cancers

This phase 1/2 first-in-human study is designed to test the safety and efficacy of IMC-R117C (PIWIL1 × CD3 ImmTAC® Bispecific Protein) as a single agent and in combination with other therapies in HLA-A\*02:01-positive participants with selected advanced PIWIL1-Positive cancers.

Inclusion Criteria: * Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1 * HLA-A\*02:01-positive * Histologically confirmed advanced colorectal, esophageal, gastric, or ovarian carcinoma * Archived or fresh tumor tissue sample that must be confirmed as adequate * Evaluable/Measurable disease per RECIST 1.1 * Previously received applicable standard treatments * Male and female participants of childbearing potential who are sexually active with a non-sterilized partner must agree to use highly effective methods of birth control Exclusion Criteria: * Symptomatic or untreated central nervous system metastasis * Recent bowel obstruction * Ongoing ascites or effusion requiring recent drainages * Significant ongoing toxicity from prior anticancer treatment * Out-of-range laboratory values * Clinically significant lung, heart, or autoimmune disease * Ongoing requirement for immunosuppressive treatment * Significant secondary malignancy * Hypersensitivity to study drug or excipients * Pregnant or lactating