New cancer drug combo tested in tiny trial – but halted early

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with unresectable or metastatic disease who are refractory to or are not candidates for standard approved therapy * Histologic confirmation of malignancy * Measurable disease per RECIST v1.1 * Eastern Cooperative Oncology Group Performance Status (ECOG) of 0 or 1 * Participants must have adequate organ function as defined by laboratory tests * Part 1: Following tumor types: Breast cancer, cholangiocarcinoma, colorectal cancer, adenocarcinoma or squamous cell carcinoma of the esophagus, gastric or gastroesophageal junction adenocarcinoma, squamous cell carcinoma of the head and neck, non-small cell lung cancer, melanoma, ovarian cancer, renal cell carcinoma, pancreatic adenocarcinoma, soft tissue sarcomas Exclusion Criteria: * Active, known or suspected autoimmune disease * Condition requiring systemic treatment with either corticosteroids or other immunosuppressive medications * Brain or leptomeningeal metastases * Known history of positive test for HIV or known AIDS * Acute or chronic hepatitis B virus (HBV) or hepatitis C virus (HCV) * Participants after solid organ or allogeneic hematopoietic stem cell transplant * History of life-threatening toxicity related to prior immune therapy * History of life-threatening toxicity related to prior cetuximab or other anti-epidermal growth factor receptor antibodies (for Sub-Part 1C) * Unstable or deteriorating cardiovascular disease within the previous 6 months * Any major surgery within 4 weeks of study drug administration * Prior immune therapy treatments, unless at least 4 weeks have elapsed from last dose * Cytotoxic/Non-cytotoxic anti-cancer agents, unless at least 4 weeks have elapsed from last dose * Use of other investigational drugs within 28 days * Prior treatment with immunoglobulin-like transcripts (ILT3)-targeting agents * Administration of a live attenuated vaccine within 28 days