TERF1 and urinary bladder cancer: The circulating tRF-1:28-chrM.Ser-TGA and tiRNA-1:34-Glu-CTC-1-M2 are specifically expressed by bladder cancer cells and are positively associated with the degree of malignancy; they can not only be applied as new biomarkers but are also expected to provide novel targets in the therapy of bladder cancer [162].