LABORATORY EVALUATIO NS ........................................................................79 20.1 Baseline and Eligibility ................................................................................ 79 20.2 Data and Specimens to be Accessioned ....................................................... 79 20.3 Laboratory and Clinical Evaluation Facilities ............................................. 82 21. DATA ANALYSIS ...................................................................................................83 21.1 Progr ession Free Survival (PFS) and Overall Survival (OS) ....................... 83 21.2 Radiographic Response and Progression Criteria for Patients with Residual Disease 83 21.3 Radiographic Response and Progression Criteria for Patients with Complete Resection 84 21.4 Special Circumstances ................................................................................. 85 21.5 Survival ........................................................................................................