MicroRNAs can function as oncogenes or tumor suppressors; they can also perform both functions simultaneously, as with miR-26, which is an oncogene in cases of glioma and glioblastoma, inhibiting PTEN (a protein regulating the Akt pathway), in addition to acting as a suppressor in other cancers, such as breast cancer, thyroid cancer, and hepatocellular cancer [15,16]. The gene discussed is AKT1; the disease is neoplasm.