RecruitingPhase 2Biological interventionTargeted Treatment for Advanced Non-Small Cell Lung Cancer That Has Increased Copies of the MET Gene (An Expanded Lung-MAP Treatment Trial)This phase II Expanded Lung-MAP treatment trial tests how well amivantamab-subcutaneous (SC) works in treating patients patients with MET amplification non-small cell lung cancer. Amivantamab-SC is a drug that reduces extra copies of the MET gene, a change present in your tumor. Giving amivantamab-SC may lower the chance of the growth or spread of advanced non-small cell lung cancer that has extra copies of the MET gene in the tumor.