RPL18 (ribosomal protein L18) is an essential component of the large ribosomal subunit, specifically the 60S ribosomal subunit, where it serves as a structural constituent necessary for protein synthesis 1. As part of the ribosome, RPL18 plays a fundamental role in cytoplasmic translation, the process by which mRNAs are translated into proteins 1. The protein is localized to various cellular compartments including the cytosol, endoplasmic reticulum, and nucleus, reflecting its involvement in ribosome biogenesis and function. Disease relevance includes associations with Diamond-Blackfan anemia 18, a ribosomal disorder. Recent studies reveal RPL18's involvement in diverse pathological processes: it is significantly upregulated in brain capillaries of Alzheimer's disease patients, suggesting altered protein synthesis at the blood-brain barrier 1. In cardiovascular disease, decreased RPL18 expression correlates with aortic valve calcification, and its inhibition exacerbates calcification of valve interstitial cells 2. Additionally, RPL18 has emerged as a diagnostic biomarker in postmenopausal osteoporosis 3, sepsis 4, and ovarian cancer 5. These findings indicate that beyond its core ribosomal function, RPL18 expression levels may serve as clinically relevant indicators across multiple disease states.