YTHDC2 is an m6A RNA-binding protein with 3'-5' RNA helicase activity that plays critical roles in multiple biological processes. In germline development, YTHDC2 is essential for the mitotic-to-meiotic transition during spermatogenesis and oogenesis by recognizing m6A-modified RNAs and promoting their degradation through its helicase activity 1. The protein functions as an m6A reader that binds N6-methyladenosine-containing transcripts and regulates their stability and translation efficiency 2. In cancer biology, YTHDC2 promotes malignant phenotypes in breast cancer, with expression levels positively correlating with tumor stage and contributing to enhanced metastatic ability 3. YTHDC2 also facilitates oncogene transcription in pancreatic cancer by recruiting histone methyltransferase MLL1 to promote H3K4me3 modification and chr5 accessibility 4. Additionally, YTHDC2 exhibits crosstalk between RNA m6A and DNA 5mC modifications by recruiting TET1 demethylase to transposable elements, preventing their epigenetic silencing and controlling cell fate decisions 5. In neurological contexts, YTHDC2 contributes to temporal lobe epilepsy pathophysiology by modulating glutamate dysregulation through SLC7A11 regulation in astrocytes 6.