Spectrum Pharmaceuticals Initiates Phase 3 Study of ZEVALIN® in Patients with ... DailyFinance "DLBCL consolidation therapy is a setting in which rituximab maintenance has failed to show benefit in two randomized clinical trials, whereas multiple Phase 2 studies have shown encouraging results for ZEVALIN consolidation in this setting. We feel ... Spectrum Pharma (SPPI) Commences Phase 3 ZERT of ZEVALIN |