#$%^&*AU2013245526A120150507.pdf#####ABSTRACT The invention relates to the treatment and prevention of cancers, including blood-based cancers and breast cancers, by administering agents that inhibit the activity of microRNAs, including miR-22. Inhibitors can include oligonucleotides that are at least partially complementary to these miRNAs. In some embodiments, these inhibitors are chemically modified oligonucleotides, including locked nucleic acids (LNAs).