Examining BT549 (breast cancer) and U2OS (osteosarcoma) cells as examples, which are also non-ciliated (Supplementary Fig. 3a), we first confirmed that siRNA against either Ror2 or IFT20 (Supplementary Fig. 3b) also reduced the invasiveness of these tumor cells (Supplementary Fig. 3e). Here, IFT20 is linked to osteosarcoma.