sentence1: Genentech Inc . , the world 's second-biggest biotechnology company , and Xoma Ltd. said their Rapitva drug failed to help patients with rheumatoid arthritis in a study .
sentence2: Genentech Inc . , the world 's second-largest biotechnology company , and Xoma Ltd. said they will terminate Phase II testing of their Raptiva rheumatoid-arthritis drug after finding no benefit for patients .