Genentech and Biogen Idec’s Phase III study of Rituxan in combination with fludarabine and cyclophosphamide chemotherapy met its primary endpoint of improving progression-free survival (PFS), as assessed by investigators, in patients with previously treated CD20-positive chronic lymphocytic leukemia (CLL), compared to chemotherapy alone. There were no new or unexpected safety signals reported in the study.       An independent review of the primary endpoint is being conducted for U.S. r...