ABHD2 and ovarian carcinoma: ABHD2 showed some evidence of methylation (Supplementary Figure S1a), but when we analyzed the extent of methylation in the promoter region of ABHD2 in two ovarian cancer cell lines (HEYA8 and A2780) and eight HGSOC samples by bisulfite sequencing, we found that there were few methylated CpG dinucleotides in the promoter region.