RPL7A encodes ribosomal protein L7a, a structural component of the 60S large ribosomal subunit essential for protein synthesis 12. Beyond its canonical ribosomal function, RPL7A demonstrates significant extra-ribosomal activities. The protein interacts with nuclear hormone receptors including thyroid hormone receptor (THR) and retinoic acid receptor (RAR), inhibiting their activities and influencing cell growth and differentiation 3. In disease contexts, RPL7A shows elevated expression in metastatic lung adenocarcinoma tissues, where it promotes tumor progression through a circRANBP17-UPF1-mediated pathway that destabilizes SIRT6 mRNA, affecting lipid metabolism and the AKT signaling pathway 4. Additionally, RPL7A is significantly upregulated in brain capillaries of Alzheimer's disease patients along with other ribosomal proteins, suggesting involvement in cerebrovascular pathology 5. The gene exhibits highly conserved regulatory elements across species, with bidirectional promoter regions containing evolutionarily preserved Box A and Box B sequences that bind distinct nuclear factors 6. Clinically, high RPL7A expression correlates with poor overall survival in lung adenocarcinoma, positioning it as both a prognostic biomarker and potential therapeutic target 4.