Title
ComboMATCH Treatment Trial E5: A Randomized Phase II Study of AMG 510 (Sotorasib) with or without Panitumumab in Advanced Solid Tumors

Description
This phase II ComboMATCH treatment trial tests how well AMG 510 (sotorasib) with or without panitumumab works in treating patients with KRAS G12C mutant solid tumors that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). Sotorasib is in a class of medications called KRAS inhibitors. It works by blocking the action of the abnormal protein that signals cancer cells to multiply. This helps stop or slow the spread of cancer cells. Panitumumab is in a class of medications called monoclonal antibodies. It works by slowing or stopping the growth of cancer cells. Giving combination panitumumab and sotorasib may kill more tumor cells in patients with advanced solid tumors with KRAS G12C mutation.

Objective
PRIMARY OBJECTIVES:

I. To evaluate the efficacy of the combination of AMG 510 (sotorasib) and panitumumab as compared to AMG 510 (sotorasib) alone in patients with advanced/metastatic KRAS G12C mutated solid tumors (except colorectal carcinoma [CRC] and non-small cell lung carcinoma [NSCLC]) as measured by progression free survival (Cohort 1).

II. To evaluate the efficacy of the combination of AMG 510 (sotorasib) and panitumumab in patients with advanced/metastatic KRAS G12C mutated solid tumors that have progressed on a prior KRAS G12C inhibitor as measured by response rate (Cohort 2).

SECONDARY OBJECTIVES:

I. To evaluate the efficacy of the combination of AMG 510 (sotorasib) and panitumumab as compared to AMG 510 alone in patients with advanced/metastatic KRAS G12C mutated solid tumors (except CRC and NSCLC) as measured by response rate, disease control rate, and overall survival (Cohort 1).

II, To evaluate the efficacy of the combination of AMG 510 (sotorasib) and panitumumab in patients with advanced/metastatic KRAS G12C mutated solid tumors that have progressed on a prior KRAS G12C inhibitor as measured by disease control rate, progression free survival (PFS), and overall survival (Cohort 2).

III. To further evaluate the safety and tolerability of the combination of AMG 510 (sotorasib) and panitumumab.

IV. To collect tissue and provide it to the ComboMATCH Registration Protocol to assess concordance between the diagnostic tumor mutation profile generated by the Designated Laboratories, the pre-treatment biopsy mutation profile, and the pre-treatment circulating tumor-derived deoxyribonucleic acid (DNA) (ctDNA) mutation profile from plasma, as described in ComboMATCH Registration Protocol.

Treatment Procedure: Biopsy
Procedure: Biospecimen Collection
Procedure: Computed Tomography
Procedure: Magnetic Resonance Imaging
Biological: Panitumumab
Drug: Sotorasib

Key Eligibility For full study eligibility, see this study's ClinicalTrials.gov record.

Applicable Disease Sites
Anal; Bladder; Brain/Central Nervous System; Breast; Cervix; Colon and Rectum; Endocrine cancers; Esophagus; Gastrointestinal cancers, other; Genitourinary cancers, other; Head and Neck; Ill-Defined Sites; Kidney; Liver; Lung; Melanoma/Skin cancer; Ovary; Pancreas; Prostate; Sarcoma; Stomach; Thyroid; Unknown Sites; Uterus

Participating Institutions
Mercy Health Systems, Janesville ; UW Health Eastpark Medical Center; UW Health University Hospital