The present invention relates to a pharmaceutical composition for treating cancer comprising, as an active ingredient, at least one miRNA selected from a group consisting of miR-3670, miR-4477a and miR-8078. The pharmaceutical composition for treating cancer according to the present invention has superior effects of suppressing proliferation of cancer cells and inducing destruction of cancer cells. Accordingly, the pharmaceutical composition of the present invention may be effectively used as an anticancer agent.La présente invention concerne une composition pharmaceutique pour le traitement du cancer comprenant, en tant que principe actif, au moins un miARN choisi dans un groupe constitué de miR-3670, miR-4477a et miR-8078. La composition pharmaceutique pour le traitement du cancer selon la présente invention possède des effets supérieurs de suppression de la prolifération de cellules cancéreuses et d'induction de la destruction de cellules cancéreuses. En conséquence, la composition pharmaceutique selon la présente invention peut être efficacement utilisée en tant qu'agent anticancéreux.본 발명은 miR-3670, miR-4477a, miR-8078 로 구성된 군에서 선택되는 하나 이상의 miRNA를 유효 성분으로 포함하는 암 치료용 약학 조성물에 관한 것이다. 본 발명에 따른 암 치료용 약학 조성물은 암 세포의 증식 억제 및 사멸을 유발하는 효과가 우수하다. 따라서 본 발명의 약학 조성물은 항암 치료제로서 유용하게 사용될 수 있다.