Table 3. Factors significantly predicted disease-specific survival in multivariate Cox proportional hazards model in 309 RCC patients.

Variables	HR (95% CI)	P
Age	1.031 (1.004, 1.058)	0.024
Gender (male vs female)	1.308 (0.641, 2.670)	0.461
AJCC stage (III–IV vs I–II)	5.907 (3.045, 11.460)	<0.001
rs1259293 genotype (CC vs TT + CT)	2.531 (1.052, 6.086)	0.038

Abbreviation: AJCC = American Joint Committee on Cancer; FSTL1 = follistatin-like 1; HR = hazard ratio; RCC = renal cell carcinoma.