Donafenib for Previously Treated Metastatic Colorectal Cancer

The study is a randomization,multicentre, phase 3 study recruiting 510 patients. Patients were eligible to participate when they have histological or cytological documentation of adenocarcinoma of the colon or rectum. They must have received locally and currently approved standard therapies and to have disease progression during or within 3 months after the last administration of the last standard therapy or to have stopped standard therapy because of unacceptable toxic effects. The available standard therapies have to include as many of the following as were licensed: a fluoropyrimidine,oxaliplatin,irinotecan. All patients receive best supportive care, excluding other investigational antitumour agents or antineoplastic chemotherapy, hormonal therapy, or immunotherapy. Patients receive oral donafenib 300mg (CM4307) on days 1-21 of each 4 weeks cycle until disease progression,death,or the unacceptable toxic effects.The primary endpoint is overall survival.The second endpoint is progression-free survival.