The main goals are after treatment given before surgery, to measure the number of people who have no signs of cancer cells in tumors and lymph nodes removed during surgery; and to learn about whether the cancer gets smaller or goes away by measuring the number of people with a certain number of living cancer cells in the tumor removed during surgery.

The main inclusion and exclusion criteria include but are not limited to the following:

Inclusion Criteria:

• Has previously untreated and pathologically confirmed resectable Stage II, IIIA, or IIIB (N2) non-small cell lung cancer (NSCLC)
• Able to undergo protocol therapy, including necessary surgery
• Confirmation that epidermal growth factor receptor (EGFR) -directed therapy is not indicated as primary therapy
• Has an Eastern Cooperative Oncology Group (ECOG) performance status of either 0 or 1 as assessed within 10 days before initiation of study intervention.
• Is able to provide archival or newly obtained core/excisional biopsy of the primary lung tumor or lymph node metastasis.

Exclusion Criteria:

• Has one of the following tumor locations/types: NSCLC involving the superior sulcus, large-cell neuro-endocrine cancer, mixed tumors containing small cell and non-small cell elements, or sarcomatoid tumor.
• Has Grade ≥2 peripheral neuropathy.
• Has history of documented severe dry eye syndrome, severe Meibomian gland disease and/or blepharitis, or severe corneal disease that prevents/delays corneal healing.
• Has active inflammatory bowel disease requiring immunosuppressive medication or previous history of inflammatory bowel disease (eg, Crohn's disease, ulcerative colitis, or chronic diarrhea).
• Has uncontrolled, significant cardiovascular disease or cerebrovascular disease.
• Received a live or live-attenuated vaccine within 30 days before the first dose of study intervention
• Received prior radiotherapy within 2 weeks of start of study intervention, or radiation related toxicities, requiring corticosteroids.
• Diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of study intervention.
• Known additional malignancy that is progressing or has required active treatment within the past 5 years.
• Severe hypersensitivity (≥Grade 3) to pembrolizumab and/or any of its excipients.
• Active autoimmune disease that has required systemic treatment in the past 2 years. Replacement therapy (e.g. thyroxine, insulin, or physiologic corticosteroid) is allowed.
• History of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease.
• Active infection requiring systemic therapy.
• Hepatitis B (defined as hepatitis B surface antigen [HBsAg] reactive) or Hepatitis C virus (defined as detectable hepatitis C virus (HCV) ribonucleic acid (RNA) [qualitative]) infection.
• Known history of human immunodeficiency virus (HIV) infection.
• History of allogeneic tissue/solid organ transplant.

https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf