GFRA1 and osteosarcoma: To illustrate whether miR-381-3p regulated DXR sensitivity of osteosarcoma cells through GFRA1, U2OS/DXR and MG63/DXR cells were transfected with si-NC, si-GFRA1, si-GFRA1 + anti-miR-NC, or si-GFRA1 + anti-miR-381-3p.