{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Long non‐coding RNAs (lncRNAs) have emerged as key epigenetic regulators in diverse biological processes and diseases, including cancer. Notably, LINC00244 has been shown to function as a tumor suppressor in hepatocellular carcinoma by downregulating programmed cell death ligand 1 (PD‐L1) expression. This downregulation leads to reduced proliferation, invasion, metastasis, and epithelial–mesenchymal transition (EMT), correlating with improved clinical outcomes."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " \n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n In the broader context of lncRNA research, additional studies have demonstrated that other lncRNAs are involved in modulating tumor cell phenotypes, drug resistance, and differentiation processes in various malignancies as well as congenital malformations. For example, distinct lncRNAs have been reported to promote leukemic and megakaryocyte differentiation through intricate signaling networks"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ", while circulating lncRNA signatures have shown promise as diagnostic biomarkers in pancreatic ductal adenocarcinoma precursors."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": " Moreover, comprehensive genomic analyses have identified key mRNAs, miRNAs, and candidate genes that further emphasize the multifaceted regulatory roles of non-coding regions in tumor progression and developmental anomalies."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": "\n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n Thus, while LINC00244’s specific role in suppressing PD‐L1-mediated oncogenic pathways underscores its therapeutic potential in hepatocellular carcinoma, the collective evidence from related studies highlights the overall importance of lncRNAs as versatile regulators in both cancer biology and developmental disorders.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Zhijia Sun, Chunyuan Xue, Jiangbo Li, et al. 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