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Background  To compare the efficacy of sorafenib and sunitinib with regard to overall survival (OS) and progression free survival (PFS) in Chinese patients with metastatic renal cell carcinoma (mRCC).    Methods  A multicenter, retrospective study was performed to elucidate the relationship between clinical variables and prognosis comparing sorafenib and sunitinib as first-line treatment agents in Chinese patients with mRCC. Between September 2006 and December 2014, 845 patients received either sorafenib (400 mg bid;  n  = 483) or sunitinib (50 mg q.d;  n  = 362). The primary end point was OS and PFS.    Results  The percentage of patients with low and moderate risk according to Memorial Sloan-Kettering Cancer Centre (MSKCC) score was significantly higher in sunitinib group, and that with high risk was significantly higher in sorafenib group (15.1 vs. 5.2%;  p  < 0.001). Median OS was similar in sorafenib and sunitinib group (24 vs. 24 months;  p  = 0.298). Sorafenib group exhibited higher mPFS compared to sunitinib group (11.1 vs. 10.0 months;  p  = 0.028). Treatment (sorafenib vs sunitinib), pathology, Eastern Cooperative Oncology Group (ECOG) performance status, MSKCC scores, Heng’s criteria of risk, and number of metastases were identified as significant predictors for OS and along with liver metastasis for PFS. Clinical outcomes in terms of mOS was significantly better with sorafenib in patients ≥65 years of age ( p  = .041), ECOG 0 ( p  = 0.0001), and median MSKCC risk score ( p  = 0.008).    Conclusions  Sorafenib and sunitinib are both effective in treating mRCC. However, sorafenib might be more effective in elderly patients (≥65 years) and in patients with an ECOG status of 0, classified under MSKCC moderate risk.

bmc cancer

Sorafenib versus sunitinib as first-line treatment agents in Chinese patients with metastatic renal cell carcinoma: the largest multicenter retrospective analysis of survival and prognostic factors