Study of AMG 160 in Subjects With Non-Small Cell Lung Cancer

Inclusion Criteria:

* Participant has provided informed consent prior to initiation of any study specific activities/procedures.
* Histologically or cytologically confirmed stage 4 or recurrent non-squamous NSCLC (Part 1); histologically or cytologically. confirmed stage 4 or recurrent NSCLC (Part 2 only, squamous cell histology/cytology allowed in Part 2).
* Without a driver mutation: disease progression following at least one line of prior chemotherapy and at least 1 prior anti-programmed cell death protein 1 (PD1)/programmed death-ligand 1 (PDL1) therapy.
* With a driver mutation must experience disease progression on at least 1 targeted therapeutic agent to be eligible.
* Detectable prostate-specific membrane antigen (PSMA) expression by PSMA positron emission tomography (PET)/computed tomography (CT) imaging.
* Measurable disease by modified Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria.
* Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0- 2.

Exclusion Criteria:

* Radiographic evidence of intratumor cavitation, major blood vessel invasion or encasement by cancer.
* Untreated or symptomatic brain metastases and leptomeningeal disease.
* History of hemoptysis within 3 months prior to first dose.
* History or evidence of gastrointestinal inflammatory bowel disease (ulcerative colitis or Crohn disease).
* Myocardial infarction, unstable angina, cardiac arrhythmias requiring medication, and/or symptomatic congestive heart failure (New York Heart Association \> class II) within 12 months prior to start of dosing.
* Vasculitis or grade 3/4 gastrointestinal bleeding within 3 months prior to first dose; vascular disease (eg, aortic aneurysm requiring surgical repair or recent peripheral arterial thrombosis) within 6 months of first dose.
* Gastrointestinal (GI) perforation and/or fistulae within 6 months prior to start of dosing.
* Interstitial lung disease or a history of pneumonitis that required oral or intravenous glucocorticoids to assist with treatment.
* Evidence of bleeding diathesis or coagulopathy (in the absence of therapeutic anticoagulation).
* Chronic systemic corticosteroid therapy or any other immunosuppressive therapies unless stopped 7 days prior to first dose.
* Any biological therapy or immunotherapy within 3 weeks of start of first dose.
* Major surgery within 4 weeks of first dose.
* Infection requiring IV antimicrobials for management within 7 days of dosing.
* Known human immunodeficiency virus (HIV) infection, hepatitis C infection.
* Active autoimmune disease