BECN1 and neoplasm: These CELF1-enriched nuclear condensates potently regulate the alternative splicing of BIN1 and BECN1 pre-mRNAs, generating pro-oncogenic BIN1-L and pro-autophagic/mitophagic BECN1-α isoforms that collectively enhance tumor malignancy by promoting tumor cell EMT, DNA damage repair, cisplatin resistance and glycolysis.