Objectives:The primary objective is to compare between treatment groups the cumulative number of new gadolinium enhancing (Gd+) lesions on brain MRI at weeks 24, 32, 40 and 48 i n subjects with secondary progressive MS. Secondary objectives include additional MRI measurements, analyses of clinical relapses, measures of neurologic disability, immunologic evaluations, and safety.~Study Design: Multi-center, randomized , double-blind, placebo-controlled , two arm parallel design study of NeuroVax™ vs. Incomplete Freund's Adjuvant ( I F A) placebo.~Subject Population: 200 subjects with Secondary Progressive SPMS MS, with an EDSS score >= 3.5 , and meeting all inclusion/exclusion criteria, will be enroll in this study. Subjects will be randomized equally to NeuroVax™ or I F A~,1 0 0 per arm .
Multi-center, randomized , double-blind, placebo-controlled , two arm parallel design study of NeuroVax™ vs. Incomplete Freund's Adjuvant ( I F A) placebo. 200 subjects with Secondary Progressive SPMS