PBX3 and posterior cortical atrophy: In addition, PBX3 can also mediate the inhibitory role of some miRNAs, such as miR‐509‐3P, miR‐144‐3p, miR‐320a and miR‐526b, on EMT in a variety of cancer types, including PCa, GC and melanoma.59, 86, 89 EMT has been shown to be engaged in multiple steps of the metastasis process.