The expression of YTHDF1, HNRNPC, IGF2BP1, VIRMA, and HNRNPA2B1 was significantly positively correlated with the ovarian serous cystadenocarcinoma (OV) tumor stem cell score (based on DNA methylation) (DNAss). The gene discussed is HNRNPC; the disease is ovarian serous cystadenocarcinoma.