TERT and cancer: Qualified studies should meet the following inclusion criteria: (1) definite diagnosis of bladder cancer by pathology, (2) without other previous cancer history, (3) reporting the relationship between TERT promoter mutation and recurrence-free survival (RFS) and/or overall survival (OS), (4) full-text studies containing sufficient and available data for calculating hazard ratios (HRs) and its ninety-five percent confidence intervals (CIs), (6) related clinicopathological data were available.