KIFC1 and osteosarcoma: Overexpression of miR-635 can target to inhibit the expression of KIFC1 and reduce the proliferation, migration, and invasion of gastric cancer cells [16]; The expression of miR-635 in osteosarcoma tissues was significantly reduced, the proliferation and invasion ability of osteosarcoma cells transfected with miR-635 mimics was weakened, and apoptosis increased, and transfection of miR-635 mimic can inhibit the growth of osteosarcoma in vivo [17].