Fig. 4From: Identification of clear cell renal cell carcinoma and oncocytoma using a three-gene promoter methylation panel OXR1 promoter methylation levels in clear cell renal cell carcinoma (ccRCC) according to nuclear grade. High grade (grade 3 and grade 4) clear cell renal cell carcinomas display higher OXR1 promoter methylation level than low grade (grade 1 and grade 2) tumours (p = 0.005)Back to article page