The Journal of urology · 2022
Association of Biochemically Verified Post-Diagnosis Smoking and Nonmuscle-Invasive Bladder Cancer Recurrence Risk.
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Furberg Helena, Petruzella Stacey, Whiting Karissa, Stein Emily, Orlow Irene, Kenney Jessica, Corrales-Guerrero Sergio, Benfante Nicole, Cha Eugene K, Donahue Timothy F, Donat Sherri M, Herr Harry W, Matulewicz Richard S, Pietzak Eugene, Dalbagni Guido, Ostroff Jamie, Bochner Bernard H
Аннотация
PURPOSE: Our goal was to determine the association between biochemically verified post-diagnosis smoking exposure and nonmuscle-invasive bladder cancer (NMIBC) recurrence risk.
MATERIALS AND METHODS: We conducted a prospective study of 354 NMIBC patients with a smoking history undergoing care between 2015 and 2018. Patients contributed at least 2 biospecimens during followup which were tested for cotinine to determine biochemically verified post-diagnosis smoking exposure (yes/no). Our primary endpoint was time to first recurrence after study start date. We examined whether post-diagnosis smoking exposure was associated with recurrence risk in multivariable Cox proportional hazards models that accounted for demographics, clinicopathological variables, time since diagnosis and pack-years.
RESULTS: Patients were predominantly White, male and had a median age of 68 years. Most patients had Ta disease (62%) and tumors of high grade (68%). Intravesical bacillus Calmette-Guérin was given to 63% of the cohort. Patients were followed for a median of 3.6 years since study start. Post-diagnosis smoking exposure was detected in 22% of patients, and 38.7% (137) of patients experienced a recurrence during followup. In multivariable models, only bacillus Calmette-Guérin treatment and prior recurrence rate were significantly associated with recurrence. There was no association between post-diagnosis smoking exposure and recurrence risk (HR: 0.73, 95% CI: 0.45-1.20).
CONCLUSIONS: In a cohort of patients with predominantly high risk NMIBC, post-diagnosis smoking exposure was not associated with NMIBC recurrence. However, smoking cessation support remains a critical component of cancer care given that the benefits of quitting extend far beyond NMIBC recurrence.
MATERIALS AND METHODS: We conducted a prospective study of 354 NMIBC patients with a smoking history undergoing care between 2015 and 2018. Patients contributed at least 2 biospecimens during followup which were tested for cotinine to determine biochemically verified post-diagnosis smoking exposure (yes/no). Our primary endpoint was time to first recurrence after study start date. We examined whether post-diagnosis smoking exposure was associated with recurrence risk in multivariable Cox proportional hazards models that accounted for demographics, clinicopathological variables, time since diagnosis and pack-years.
RESULTS: Patients were predominantly White, male and had a median age of 68 years. Most patients had Ta disease (62%) and tumors of high grade (68%). Intravesical bacillus Calmette-Guérin was given to 63% of the cohort. Patients were followed for a median of 3.6 years since study start. Post-diagnosis smoking exposure was detected in 22% of patients, and 38.7% (137) of patients experienced a recurrence during followup. In multivariable models, only bacillus Calmette-Guérin treatment and prior recurrence rate were significantly associated with recurrence. There was no association between post-diagnosis smoking exposure and recurrence risk (HR: 0.73, 95% CI: 0.45-1.20).
CONCLUSIONS: In a cohort of patients with predominantly high risk NMIBC, post-diagnosis smoking exposure was not associated with NMIBC recurrence. However, smoking cessation support remains a critical component of cancer care given that the benefits of quitting extend far beyond NMIBC recurrence.