EpS showed the highest EA (p < 0.01) across all three DNAm clocks compared to those generated from SMARCA4-deficient ATRT, SMARCA4-deficient MRT, and small cell carcinoma of the ovary, hypercalcemic type (SCCOHT) (supplementary 7, Fig. 2). This evidence concerns the gene SMARCA4 and ovarian small cell carcinoma.