A Trial to Find Out How Safe REGN7075 is and How Well it Works in Combination With Cemiplimab for Adult Participants With Advanced Cancers
Trial Parameters
Brief Summary
This study is researching an investigational drug called marlotamig (REGN7075) by itself and in combination with cemiplimab with or without chemotherapy. The study is focused on patients with certain solid tumors that are in an advanced stage. The aim of the study is to see how safe and tolerable marlotamig is by itself and in combination with cemiplimab (with or without chemotherapy), and to find out what is the best dose of marlotamig to be given to patients with advanced solid tumors when combined with cemiplimab (with or without chemotherapy). Another aim of the study is to see how effective marlotamig by itself, or in combination with cemiplimab (with or without chemotherapy), is at treating cancer patients. The study is also looking at: * Side effects that may be experienced by people taking marlotamig by itself and in combination with cemiplimab with or without chemotherapy * How marlotamig works in the body by itself and in combination with cemiplimab with or without chemotherapy * How much marlotamig is present in the blood when given by itself and in combination with cemiplimab with or without chemotherapy * To see if marlotamig by itself and in combination with cemiplimab with or without chemotherapy works to treat cancer by controlling the proliferation of tumor cells to shrink the tumor * Whether the body makes antibodies against the study drugs (marlotamig and cemiplimab) (which could make the drug less effective or could lead to side effects)
Eligibility Criteria
Key Inclusion Criteria: 1. Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 2. Has histologically or cytologically confirmed cancer that meets criteria as defined in the protocol 3. Expansion Cohorts only: Is anti-Programmed cell Death protein-1 (PD-1)/Programmed cell Death Ligand-1 (PD-L1) naïve, defined as never having previously been treated with a drug that targets the PD-1 4. Has at least 1 lesion that meets study criteria as defined in the protocol 5. Willing to provide tumor tissue from newly obtained biopsy (at a minimum core biopsy) from a tumor site that has not been previously irradiated 6. Has adequate organ and bone marrow function as defined in the protocol 7. In the judgement of the investigator, has a life expectancy of at least 3 months Key Exclusion Criteria: 1. Is currently participating in another study of a therapeutic agent 2. Has participated in any study of an investigational agent or an investigational device within 4 weeks of the f