KEYMAKER-U01 Substudy 01J: A Study of Pembrolizumab Plus MK-1084 in Participants With Non-Small Cell Lung Cancer (NSCLC) With Kirsten Rat Sarcoma Viral Oncogene Homolog (KRAS) G12C Mutations (MK-3475-01J/KEYMAKER-U01J)

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has histologically or cytologically confirmed diagnosis of advanced or metastatic nonsquamous Non-Small Cell Lung Cancer (NSCLC) * Has tumor tissue or circulating tumor deoxyribonucleic acid (ctDNA) that demonstrates the presence of Kirsten rat sarcoma viral oncogene homolog (KRAS) G12C mutations * Can provide an archival tumor tissue sample or newly obtained core, incisional, excisional biopsy of a tumor lesion not previously irradiated * Has recovered to ≤Grade 1 or baseline from any Adverse events (AEs) due to previous anticancer therapies and/or ≤Grade 2 neuropathy and/or endocrine-related AEs adequately treated with hormone replacement * Has well controlled human immunodeficiency virus (HIV) on antiretroviral therapy (ART) if HIV-infected * Has undetectable hepatitis B (HBV) viral load and have received HBV antiviral therapy for at least 4 weeks if hepatitis B surface antigen (HBsAg) positive * Has undetectable hepatitis C (HCV) viral load if HCV-infected Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * Has a diagnosis of small cell lung cancer or, for mixed tumors, presence of small cell elements * Has HIV-infection with a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease * Has active inflammatory bowel disease requiring immunosuppressive medication or previous clear history of inflammatory bowel disease * …