{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent studies have revealed that miR‑4513 broadly impacts cardiometabolic regulation. A common single nucleotide polymorphism (rs2168518) within its seed region has been robustly associated with altered fasting glucose, cholesterol levels, blood pressure, and coronary artery disease risk, suggesting that miR‑4513 modulates key metabolic pathways underlying cardiovascular homeostasis and disease susceptibility."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "3"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn oncological contexts, miR‑4513 has emerged as a significant player in tumor progression and therapy response. In lung adenocarcinoma, the rs2168518 variant contributes to differential sensitivity to epidermal growth factor receptor–tyrosine kinase inhibitors, with functional experiments demonstrating that miR‑4513 can enhance resistance to gefitinib. Meanwhile, in gastric and breast cancers, elevated expression of miR‑4513 promotes cell proliferation, invasion, and epithelial–mesenchymal transition by targeting critical regulators such as lysine acetyltransferase 6B, and by participating in regulatory axes (for example, the MEG3/miR‑4513/PBLD network) that modulate chemoresistance to paclitaxel. Together, these findings underscore the multifaceted role of miR‑4513 in cancer biology and its potential as a prognostic biomarker and therapeutic target."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "4", "end_ref": "6"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAt the mechanistic level, allele‐specific investigations have demonstrated that the rs2168518 polymorphism in miR‑4513 leads to differential regulation of a distinct set of target genes. Transcriptomic and functional analyses have identified numerous allele‐dependent targets whose altered regulation may underlie the microRNA’s diverse effects—including modulation of transcription factor binding sites that could account for tissue- and gender-specific phenotypes, such as those observed in age-related macular degeneration. These mechanistic insights further corroborate the notion that miR‑4513 functions as a pleiotropic regulator, fine-tuning gene expression networks involved in both cardiometabolic processes and oncogenesis."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Mohsen Ghanbari, Paul S de Vries, Hans de Looper, et al. 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