showed a trendP =0.062
Methylation of ccRCCs was not statistically associated with sex, age and lymph node metastasis status but showed a trend for the tumour diameter ( P =0.062). mir-124-3 methylation is associated with worse recurrence-free survival of patients To assess whether mir-124-3 methylation is associated with the clinical course of patients with ccRCC, we first performed a Cox regression analysis using a statistically calculated optimum cutoff value corresponding to a relative methylation level of 0.0015 for dichotomization of patients ( Figure 4B ).