DNMT1 and central nervous system cancer: To study the role of DNMTs in gliomas, we used q-RT PCR to analyze the expression of the three DNA methyltransferase enzymes (DNMT1, DNMT3A and DNMT3B) in a panel of low and high-grade gliomas (n=32) collected at the University Medical Center Freiburg (Figure 1A and Supplementary Table 1).