Having established that miR-128-3p and NTRK3 functioned as a tumor suppressor and an oncogene, respectively, and that NTRK3 was a target of miR-128-3p, the next issue to address was whether miR-128-3p exerted a tumor inhibitor effect by hindering carcinogenesis of the oncogenic NTRK3. This evidence concerns the gene NTRK3 and neoplasm.