The manufacturer (Helsinn) states that Truseltiq was discontinued because researchers couldn't get enough people with bile duct cancer to participate in their clinical studies. The purpose of the studies was to confirm the medication's clinical benefit — how well the cancer responded to Truseltiq and how long this response lasted. When a medication is granted an accelerated approval, the FDA requires the manufacturer to confirm the medication's clinical benefit through studies at a later time for consideration for a traditional approval. Truseltiq wasn't discontinued because of safety reasons or because the medication didn't work well. If you have questions, speak to your healthcare provider.