The present invention relates to anticancer compositions, and more particularly to anticancer pharmaceutical compositions comprising an inhibitor of microRNA-30b, microRNA-133a, or microRNA-202-5p as an active ingredient. According to the pharmaceutical composition of the present invention, proliferation of cancer cells can be inhibited by inhibiting microRNA-30b, microRNA-133a, or microRNA-202-5p, and ultimately, it is expected to be useful for the treatment of cancer.
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