Study of Pembrolizumab and Single Agent Chemotherapy as First Line Treatment for Patients With Locally Advanced or Metastatic Non-small Cell Lung Cancer With Eastern Cooperative Oncology Group (ECOG) Performance Status of 2

Inclusion Criteria17

• Participants must be \>18 years old at time of diagnosis
• Histologically confirmed non-small cell lung cancer
• ECOG PS 2
• Clinical staging of IIIc or IV disease.
• A. For patients with stage IIIc disease, patients are ineligible for or refuse standard treatment with platinum-double chemotherapy and radiation.
• B. For patients with stage IV disease, platinum doublet chemotherapy is not appropriate, deemed unsafe by the treating physician, or declined by the patient
• C. Screening lab work must meet the following parameters:
• Ca. Absolute neutrophil count (ANC) ≥1000/mm3
• Cb. Platelet count ≥100,000/mm3
• Cc. CrCl\>50 (if pemetrexed is to be offered)
• Cd. AST and ALT ≤ 2.5 x ULN
• D. Patients with small, asymptomatic brain metastases are eligible
• E. Women of childbearing potential must be negative for pregnancy testing (urine or blood) and agree to use effective contraception. Viable contraception should be used after trial screening, before initiation of chemotherapy, and throughout the duration of active treatment in the study.
• Non-childbearing potential is defined as (by other than medical reasons): -Amenorrheic \>2 years
• Amenorrheic for \<2 years and a follicle-stimulating hormone value in the postmenopausal range upon pre-study (screening) evaluation
• Post hysterectomy, oophorectomy or tubal ligation. Otherwise the patient must be willing to use 2 adequate barrier methods throughout the study, starting with the screening visit through 120 days after the last dose of study drug
• F.Participants must read or be read and explained the purposes of the study and sign a statement of informed consent prior to participation. Those who do not read or understand English are eligible and may be consented according to institutional regulations.