The present invention relates to a composition for preventing or treating cancer comprising an miR-BART1-3p inhibitor as an active ingredient, and more particularly to a composition for preventing or treating cancer comprising an antisense oligonucleotide complementary to miR-BART1-3p inhibitor miR- May be useful for treating gastric cancer, Hodgkin's lymphoma, Burkitt's lymphoma, or nasopharyngeal carcinoma.
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