ELOA (elongin A) is a multifunctional protein that serves as a key component of the elongin complex and plays critical roles in transcriptional regulation and cellular processes. As part of the heterotrimeric elongin complex with ELOB and ELOC, ELOA functions as a transcriptional elongation factor for RNA polymerase II (Pol II) 1. Structurally, ELOA binds to the RPB2 side of Pol II and contains a 'latch' element that induces conformational changes near the polymerase active center, which is required for its elongation-stimulatory activity 1. ELOA regulates transcriptional elongation by controlling RNA polymerase II processivity, particularly at transcription end sites, and influences pre-mRNA processing 23. The protein is involved in DNA damage responses, being recruited to sites of DNA damage in actively transcribed regions where it undergoes phosphorylation by CDKL5 kinase, contributing to transcriptional silencing following DNA double-strand breaks 4. In disease contexts, ELOA exhibits context-dependent roles: it acts as an oncogene in gastric cancer by transcriptionally activating RBP1 5, while serving as a biomarker in esophageal cancer subtypes 6 and recurrent miscarriage 7. Additionally, ELOA is implicated in cellular senescence and aging processes, with its loss conferring growth advantages to aging primary fibroblasts 23.