Bladder cancer is a urological tumor with high rates of recurrence despite recent advances in novel therapies. Many proteins involved in the molecular mechanisms are currently an enigma, especially the transmembrane 9 superfamily member 1 which has an unclear function. Wei published the function and mechanism of this protein, and showed that it could participate in the proliferation, migration and invasion of tumor cells in bladder cancer, therefore treatments directed against this protein may be beneficial in avoiding this condition.