This phase II trial compares the effect of amivantamab and hyaluronidase to cetuximab for the treatment of skin (cutaneous) squamous cell carcinoma that has come back after a period of improvement and has not spread to other parts of the body (locally recurrent) or that has spread from where it first started (primary site) to other places in the body (metastatic). Amivantamab is a monoclonal antibody that may interfere with the ability of tumor cells to grow and spread. A monoclonal antibody is a type of protein that can bind to certain targets in the body, such as molecules that cause the body to make an immune response (antigens). Hyaluronidase is an endoglycosidase. It helps to keep amivantamab in the body longer, so that the medications will have a greater effect. Cetuximab is in a class of medications called monoclonal antibodies. It binds to a protein called EGFR, which is found on some types of cancer cells. This may help keep cancer cells from growing. Giving amivantamab and hyaluronidase may be as effective as cetuximab for the treatment of locally recurrent or metastatic cutaneous squamous cell carcinoma.
Participants must have pathologically proven diagnosis of cutaneous squamous cell carcinoma based on pathology from original diagnosis or from a metastatic/recurrent lesion
Participants must have measurable or non-measurable disease per RECIST 1.1 and must have their disease assessed by CT of chest/abdomen/pelvis (with contrast unless contraindicated) within 28 days prior to registration for measurable disease or within 42 days prior to registration for non-measurable disease. All known sites of disease must be assessed and documented on the Baseline Tumor Assessment Form (RECIST 1.1). Any lesions assessed using a non-diagnostic positron emission tomography (PET)/CT of chest/abdomen/pelvis will be considered non-measurable lesions. Pleural effusions, ascites and laboratory parameters are not acceptable as the only evidence of disease. Participants whose only measurable disease is within a previous radiation therapy port must demonstrate clearly progressive disease (in the opinion of the treating investigator) prior to registration to be considered measurable
NOTE: All diseases must be assessed and documented on the baseline tumor assessment form
Participants with exclusively locally recurrent disease must have either a contraindication to surgical treatment of lesions (i.e., complete resection is not possible or not expected to be clinically beneficial or resection conferring significant cosmetic or functional concerns) or have refused surgical or radiation treatment
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