van Osch FHM, et al. - In this prospective study, researchers investigated the link between smoking cessation before and after diagnosis and bladder cancer recurrence. They analyzed data on smoking behavior before and up to 5 years after diagnosis for non-muscle-invasive bladder cancer (NMIBC) patients (pTa, pT1, and CIS) from the prospective Bladder Cancer Prognosis Programme (BCPP) cohort and used multivariable Cox regression models to determine the time-to-first NMIBC recurrence. The retrospective evidence suggested a possible reduction in recurrence risk due to smoking cessation after diagnosis, however, this finding was not corroborated in this present study because of low numbers of patients quitting smoking.