Proton Beam Radiation With Concurrent Chemotherapy and Nelfinavir for Inoperable Stage III Non Small Cell Lung Cancer (NSCLC)

Overall objectives: 1. Determine MTD of proton beam radiotherapy with concurrent cisplatin and etoposide for stage III NSCLC. 2. Determine MTD of proton beam radiotherapy with concurrent carboplatin and paclitaxel for stage III NSCLC in non-cisplatin candidates. 3. Determine MTD of Nelfinavir with concurrent chemoradiotherapy for stage III NSCLC at RPTD of proton beam radiotherapy. 4. Develop biomarker for clinical outcome with concurrent chemoradiotherapy in stage III NSCLC. 5. To determine clinical efficacy, as defined by metabolic response, sites of recurrence (e.g., local, regional, distant) and progression-free and overall survival.