Mean methylation of SOX18 for MMC patients and controls according to MTHFR 677 C>T genotype by Sequenom EpiTYPER. Boxplot representing the methylation pattern of MMC patients and controls divided according to MTHFR 677 C>T genotype with box = 25th and 75th percentiles; bars = min and max values. The mean methylation level of each group is shown above the plot. (TIFF 337 kb)