Nivolumab and Ipilimumab Plus Chemotherapy for Patients With Stage IV Lung Cancer With Brain Metastases

Inclusion Criteria: * COHORT A Patients with histologically or cytologically confirmed stage IV NSCLC who did not receive any prior systemic therapy for advanced disease and have synchronous untreated brain metastases which does not cause neurologic symptoms and does not require systemic corticosteroid treatment within 10 days before initiating study treatment (controlled seizures with antiepileptic drugs should be allowed). * COHORT B Patients with histologically or cytologically confirmed stage IV NSCLC who did not receive any prior systemic therapy for advanced disease and have synchronous brain metastasis causing neurologic signs and symptoms controlled with medium-low doses of corticosteroids (≤ 25mg/d of prednisone or ≤ 4mg/d of dexamethasone) but have good performance status (ECOG PS0-1). At least one untreated brain lesion in patients who already received focal radiotherapy (stereotactic focal radiotherapy) of prior brain lesions are eligible if novel brain lesions appear which are measurable and not suitable for focal radiotherapy.3. Patients with early or locally advanced NSCLC who have recurred after 6 months of completing adjuvant or neoadjuvant chemotherapy and have brain metastases are also eligible * ECOG performance status 0-1 * Patients aged ≥ 18 years * Systemic measurable disease by computed tomography (CT) per response evaluation criteria in solid tumors version (RECIST) 1.1 criteria and brain measurable disease by magnetic resonance imaging (MRI) per RAN…