WNT6 and central nervous system cancer: Interestingly, looking for the 28 DNA methylation sites within the WNT6 locus, in 516 LGG and 141 GBM patients, we identified regions that are consistently hypomethylated (e.g., from the 4th probe [cg16256504] to the 8th probe [cg02175741]) or hypermethylated (e.g., 16th probe [cg05618201]) both in LGG and in GBM (Figs 2A and S2), showing a remarkable homogeneity of DNA methylation levels of these particular regions across very heterogeneous glioma samples of different grades.