Patient description: A 57-year-old man was admitted to the clinic because of weight loss and persistent dry cough 4 months ago. Chest computed topography showed bilateral multiple infiltrates in the upper lobes and thickened bronchial walls. There is a documented positive serum MPO-ANCA in his medical record. Transbronchial biopsy revealed necrotic granulomas with multinucleated giant cells and the Wegener's granulomatosis was diagnosed for him. He is treating with corticosteroid and cyclophosphamides since 4 months ago. His Birmingham Vasculitis Activity Score (BVAS) is above 4 since the beginning of his disease. His last physical exam and lab study was performed yesterday and showed the results bellow: A wellbeing, well-nourished man, non-icteric, cooperative and alert Weight: 73 kg Height: 177 BP: 120/80 HR: 90/min RR: 22/min Hgb: 13 g/dl WBC: 8000 /mm3 (Neutrophil: 2700/mm3) Plt: 300000 /ml AST: 40 U/L ALT: 56 U/L Alk P: 147 U/L Bill total: 1.2 mg/dl ESR: 120 mm/hr MPO-ANCA: 153 EU

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  ALK Gene Rearrangement EGFR Gene Mutation Locally Advanced Lung Non-Small Cell Carcinoma Lung Non-Small Cell Carcinoma Stage II Lung Cancer AJCC v8 Stage IIA Lung Cancer AJCC v8 Stage IIB Lung Cancer AJCC v8 Stage III Lung Cancer AJCC v8 Stage IIIA Lung Cancer AJCC v8 Stage IIIB Lung Cancer AJCC v8 Stage IIIC Lung Cancer AJCC v8 Unresectable Lung Non-Small Cell Carcinoma Patients must have histologically or cytologically confirmed NSCLC (any histology) Patients must have stage II or III local-regionally advanced NSCLC that is deemed to be best treated by systemic and concurrent radiotherapy. Eligible patients with stage II disease must be unresectable or refuse surgical resection No prior therapy for the current stage II or stage III NSCLC disease ECOG (Eastern Cooperative Oncology Group) performance status =< 2 (Karnofsky >= 60%) Leukocytes >= 2,000/mcL Absolute neutrophil count >= 1,000/mcL Platelets >= 75,000/mcL Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) =< 3 x institutional ULN Creatinine =< 1.5 x institutional ULN  Prior systemic therapy for the current active local-regionally advanced NSCLC Patients who are receiving any other investigational agents History of allergic reactions attributed to compounds of similar chemical or biologic composition to nivolumab Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements Pregnant women are excluded from this study because nivolumab is an immunotherapy agent with the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with nivolumab, breastfeeding should be discontinued if the mother is treated with nivolumab. These potential risks may also apply to radiation therapy used in this study Known human immunodeficiency virus (HIV) positivity Active chronic treatment (that is still required) with systemic immunosuppressive medications (including but not limited to prednisone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor [TNF] agents) Patients who have received acute, low dose, systemic immunosuppressant medications (e.g., a one-time dose of dexamethasone for nausea) may be enrolled. The use of inhaled corticosteroids and mineralocorticoids (e.g., fludrocortisone) for patients with orthostatic hypotension or adrenocortical insufficiency is allowed History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric or humanized antibodies or fusion proteins Patients with prior allogeneic bone marrow transplantation or prior solid organ transplantation