The invention provides chemically modified oligonucleotides capable of inhibiting the expression (e.g., abundance) of miR-15 family miRNAs, including miR-15a, miR-15b, miR-16, miR-195, miR-424, and miR-497. The invention provides in some embodiments, oligonucleotides capable of inhibiting, in a specific fashion, the expression or abundance of each of miR-15a, miR-15b, miR-16, miR-195, miR-424, and miR-497. The invention further provides pharmaceutical compositions comprising the oligonucleotides, and methods of treating patients having conditions or disorders relating to or involving a miR-15 family miRNA, such as a cardiovascular condition. In various embodiments, the oligonucleotides provide advantages in one or more of potency, efficiency of delivery, target specificity, toxicity, and/or stability.
