%0 Journal Article %T Role of miRNA‑122 in cancer (Review). %A Zhang J %A Wu L %A Ding R %A Deng X %A Chen Z %J Int J Oncol %V 65 %N 3 %D 2024 Sep %M 39027994 %F 5.884 %R 10.3892/ijo.2024.5671 %X MicroRNAs (miRNAs) are small non‑coding RNAs that serve key roles in cell proliferation, migration, invasion and apoptosis by regulating gene expression. In malignant tumors, miRNA‑122 serves either as a tumor suppressor or oncogene, influencing tumor progression via downstream gene targeting. However, the precise role of miRNA‑122 in cancer remains unclear. miRNA‑122 is a potential biomarker and modulator of radiotherapy and chemotherapy. The present review aimed to summarize the roles of miRNA‑122 in cancer, its potential as a biomarker for diagnosis and prognosis and its implications in cancer therapy, including radiotherapy and chemotherapy, alongside strategies for systemic delivery.