A Trial to Find Out How Safe REGN7075 is and How Well it Works in Combination With Cemiplimab for Adult Participants With Advanced Cancers

About

Brief Summary

This study is researching an investigational drug called 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 REGN7075 is by itself and in combination with cemiplimab (with or without chemotherapy), and to find out what is the best dose of REGN7075 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 REGN7075 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 REGN7075 by itself and in combination with cemiplimab with or without chemotherapy
How REGN7075 works in the body by itself and in combination with cemiplimab with or without chemotherapy
How much REGN7075 is present in the blood when given by itself and in combination with cemiplimab with or without chemotherapy
To see if REGN7075 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

Primary Purpose

Treatment

Study Type

Interventional

Phase

Phase 1/Phase 2

Eligibility

Gender

All

Healthy Volunteers

No

Minimum Age

18 Years

Maximum Age

N/A

Key Inclusion Criteria:

Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
Has histologically or cytologically confirmed cancer that meets criteria as defined in the protocol
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
Has at least 1 lesion that meets study criteria as defined in the protocol
Willing to provide tumor tissue from newly obtained biopsy (at a minimum core biopsy) from a tumor site that has not been previously irradiated
Has adequate organ and bone marrow function as defined in the protocol
In the judgement of the investigator, has a life expectancy of at least 3 months

Key Exclusion Criteria:

Is currently participating in another study of a therapeutic agent
Has participated in any study of an investigational agent or an investigational device within 4 weeks of the first administration of study drug as defined in the protocol
Has received treatment with an approved systemic therapy within 4 weeks of the first administration of study drug or has not yet recovered (ie, grade 1 or baseline) from any acute toxicities
Has received recent anti-epidermal growth factor receptor (EGFR) antibody therapy as defined in the protocol
Has received radiation therapy or major surgery within 14 days of the first administration of study drug or has not recovered (ie, grade 1 or baseline) from adverse events
Has received any previous systemic, non-immunomodulatory biologic therapy within 4 weeks of first administration of study drug.
Has had prior anti-cancer immunotherapy within 5 half-lives prior to study drug as defined in the protocol
Has second malignancy that is progressing or requires active treatment as defined in the protocol
Has any condition requiring ongoing/continuous corticosteroid therapy (>10 mg prednisone/day or anti-inflammatory equivalent) within 1-2 weeks prior to the first dose of study drug as defined in the protocol
Has ongoing or recent (within 5 years) evidence of significant autoimmune disease or any other condition that required treatment with systemic immunosuppressive treatments as defined in the protocol
Has untreated or active primary brain tumor, CNS metastases, leptomeningeal disease, or spinal cord compression
Has encephalitis, meningitis, organic brain disease (eg, Parkinson's disease) or uncontrolled seizures within 1 year prior to the first dose of study drug
Has any ongoing inflammatory skin disease as defined in the protocol