ZNF331 and cancer: The deregulated loci corresponded to eight genes, i.e. ZDBF2, PEG10, MEST, H19, IGF2, MEG3, ZNF331 and HM13. For each of these genes, the frequency of samples featuring biallelic expression in cancer was estimated, going up to 100% for MEST in LumB and HER2 (Supplementary Table 5).