Figure 4From: Aberrant methylation of NPY, PENK, and WIF1 as a promising marker for blood-based diagnosis of colorectal cancer ROC curve relative to the cumulative methylation index. Sum of three (WIF1, NPY, PENK) methylation indexes are used to establish ROC curves corresponding to Series 1 (A), Series 2 (B), total of both series (C) for CRC and Series 3 (D) for other cancers.Back to article page