The impact of smoking on recurrence and progression of non-muscle invasive bladder cancer: a systematic review and meta-analysis

Smoking behavior and the risks of tumor recurrence and progression in patients with non-muscle-invasive bladder cancer

Studies on the relationship of cigarette smoking with the risks of recurrence and progression of non-muscle-invasive bladder cancer (NMIBC) are inconsistent and prospective data are scarce. Therefore, we aimed to assess the association of smoking behavior with risks of NMIBC recurrence and progression. We used data of the prospective multi-center cohort study UroLife, including 1495 patients with NMIBC who reported information on smoking at 6 weeks post-diagnosis (baseline; reflecting present and pre-diagnosis). This included smoking status (also based on reporting 3 months post-diagnosis), intensity, duration, pack years, and time since smoking cessation, if applicable. Hazard ratios and 95% confidence intervals (CIs) for risks of first recurrence, multiple recurrences, and progression were computed using multivariable proportional hazards regression models. During a total median follow-up period of 4.6 years, 517 patients developed ≥1 recurrence and 163 had progression. Higher versus lowest categories of smoking intensities and pack years up to baseline were significantly associated with a higher risk of first recurrence. No significant linear associations were found, except for smoking intensity among BCG-treated patients (per 10 cigarettes/day increase: HR 1.23, 95%CI 1.02, 1.48). No associations for smoking status, duration, and time since cessation were observed. Analyses of multiple recurrence risk showed comparable results. Regarding progression risk, no consistent associations were found. In conclusion, heavier smoking was associated with higher recurrence risk, particularly among BCG-treated patients. This may be attributable to persistent damage through its carcinogenic compounds. Given the mixed results across different exposures, the effect of smoking behavior on NMIBC prognosis remains unclear.

Practice patterns, experiences, and challenges of German oncology health care staff with smoking cessation in patients with cancer: a cross-sectional survey study

PURPOSE

Often, cancer patients do not receive education about the negative consequences of smoking on the treatment outcome. To support cancer patients in the process of smoking cessation, it is essential to involve oncology staff. This study aims to learn about the experiences and attitudes from the point of view of oncology staff and, thus, how a smoking intervention should be designed. The study aims to engage all oncology staff due to the unclear responsibility for providing smoking cessation education, support, and motivating cancer patients to quit smoking.

METHODS

N = 354 German oncology staff (oncologists, nurses, psycho-oncologists, others) filled out a 5-point Likert scale-based questionnaire regarding practices, potential barriers, and attitudes towards smoking cessation between October 2021 and June 2022. The questionnaire was developed by Derksen et al. (2020), translated and slightly modified for the use of this study. It was distributed to all leading oncology staff in our Cancer Center Network with a request to share with all oncology staff. Flyers were also handed out in all oncology wards and outpatient clinics in the same Cancer Center Network.

RESULTS

Most oncology staff ask cancer patients about their current smoking status (curative, M = 2.27; SD = 1.59; palliative, M = 2.90; SD = 1.83), but they rarely treat or refer patients for a smoking cessation intervention (curative, M = 4.78; SD = 1.20; palliative, M = 4.99; SD = 1.06). Smoking behavior of curative cancer patients is addressed more than that of palliative cancer patients (d =  - 37). Regression analyses of key dependent variables showed that profession, setting, and the belief that continued smoking affects treatment outcome explained the variance of asking patients if they smoke, advising to stop smoking and lack of time (without profession).

CONCLUSION

Involving oncology staff in motivating cancer patients who smoke to quit and referring them to smoking cessation services should take the different attitudes and knowledge of the staff into account to improve treatment that supports tobacco cessation.

IMPLICATIONS FOR CANCER SURVIVORS

Cancer patients have special needs when it comes to a cessation program. In the long term, survivors will benefit from tailored smoking cessation education and services provided by oncology staff to help them quit smoking after a cancer diagnosis.

Contribution of smoking to the global burden of bladder cancer from 1990 to 2021 and projections to 2046

INTRODUCTION

Based on the results extracted from the Global Burden of Disease (GBD) 2021, the objective of this research is to examine the spatiotemporal trends of bladder cancer attributable to smoking from 1990 to 2021, and to make projections up to the year 2046.

METHODS

This study conducted a secondary dataset analysis of smoking-attributable bladder cancer data extracted from GBD 2021. Bladder cancer was classified using the International Classification of Diseases 10th Revision (ICD-10) in GBD, and smoking exposure was defined as both current and past use of smoked tobacco products. By employing a Bayesian age-period-cohort (BAPC) model, the average annual percentage change (AAPC) was determined to examine trends over time.

RESULTS

From 1990 to 2021, the number of deaths and disability-adjusted life years (DALYs) due to smoking-attributable bladder cancer increased significantly. The age-standardized death rate (ASDR) decreased, with an AAPC of -1.54 (95% CI: -1.62 - -1.46). The age-standardized DALY rate (ASDLR) also showed a decline, with an AAPC of -1.68 (95% CI: -1.81 - -1.56). The regions that experienced the most significant age-standardized rate (ASR) burden were Central Europe and Western Europe. Regions with high-medium sociodemographic index (SDI) values had the highest number of deaths and DALYs, as well as the highest ASR for both indicators. The heaviest global disease burden is concentrated among males and individuals aged ≥70 years. Smoking-attributable bladder cancer deaths are projected to rise over the next 25 years, reaching 90021.45 by 2046.

CONCLUSIONS

Despite a decrease in the ASRs of smoking-attributable bladder cancer, the absolute burden has increased and is expected to continue growing. Therefore, continuous and targeted tobacco control measures and medical strategies are needed, especially for developed regions, the elderly, and male populations. And due to the unique mechanisms by which tobacco causes disease, the youth and female populations should not be neglected.

Perioperative Intensive Smoking Cessation Intervention Among Smokers Who Underwent Transurethral Resection of Bladder Tumor (TURBT) in Two Different Settings: A Randomized Controlled Trial

Background/Objective: Smoking is an individual risk factor for bladder cancer. Many patients are still smoking at the time of their diagnosis, yet few trials have examined smoking cessation interventions (SCIs) in relation to transurethral resection of the bladder tumor (TURBT). This study therefore aimed to compare the efficacy of a hospital-based 6-week intensive SCI with standard treatment among this patient group. Methods: A parallel-arm randomized controlled trial was conducted from December 2021 to March 2024 at two university hospital urology departments in Denmark. A total of 38 daily smokers undergoing TURBT were allocated to the hospital-based intensive SCI, including weekly meetings, patient education, motivational support, and complimentary nicotine replacement therapy or the standard treatment with very brief advice and referral to the same intensive SCI at a municipality clinic. The primary outcome was smoking cessation at the end of the intervention, assessed through participant interviews. The secondary outcomes included continuous abstinence at three and six months, quality of life, and frailty. Analyses were performed as intention-to-treat. Results: After six weeks, 37% in the hospital-based group and 6% in the standard group achieved smoking cessation (p = 0.042). At three and six months the quit rates were, 37% and 26% in the hospital-based group, compared to 0% and 0% in the standard group, respectively. No significant differences in quality of life or frailty were found. Conclusions: This trial found that hospital-based intensive SCI increased cessation rates compared to standard treatment. It would be valuable to evaluate the impact on postoperative complications, cancer prognosis, and long-term cessation in a sizeable new study.

The Potential for Lifestyle Intervention Among Patients Undergoing Transurethral Resection of Bladder Tumour Based on Patient Needs Including Smoking and Other Risky Lifestyle Factors: A Cross-Sectional Study

Bladder cancer is the tenth most common cancer worldwide, with non-muscle invasive bladder cancer (NMIBC) accounting for 75% of cases. Transurethral resection of bladder tumours (TURBT) is the standard treatment, but it is associated with significant risks of complications and recurrence. Risky lifestyle factors, including smoking, malnutrition, obesity, risky alcohol use, and physical inactivity (collectively termed SNAP factors), may worsen surgical outcomes and increase cancer recurrence. Prehabilitation programmes targeting these modifiable risk factors could improve patient outcomes. This cross-sectional study assessed 100 TURBT patients at a Danish university hospital to determine the prevalence of SNAP factors and the potential for lifestyle interventions. Data were collected via structured interviews, and intervention scenarios were projected based on efficacy rates of 5-100%. In total, 58% of patients had at least one risky SNAP factor, with smoking (29%) being the most prevalent, followed by physical inactivity (19%) and risky alcohol use (18%). Obesity (7%) and malnutrition (8%) were less common. Seventeen percent had multiple SNAP factors. No significant demographic indicators were associated with the presence of SNAP factors. TURBT patients with NMIBC show a high prevalence of risky lifestyle factors, including smoking and obesity, with over half affected. Systematic screening and targeted interventions could significantly improve patient outcomes and long-term health.

European Association of Urology Guidelines on Non-muscle-invasive Bladder Cancer (TaT1 and Carcinoma In Situ)-A Summary of the 2024 Guidelines Update

BACKGROUND AND OBJECTIVE

This publication represents a summary of the updated 2024 European Association of Urology (EAU) guidelines for non-muscle-invasive bladder cancer (NMIBC), TaT1, and carcinoma in situ. The information presented herein is limited to urothelial carcinoma, unless specified otherwise. The aim is to provide practical recommendations on the clinical management of NMIBC with a focus on clinical presentation.

METHODS

For the 2024 guidelines on NMIBC, new and relevant evidence was identified, collated, and appraised via a structured assessment of the literature. Databases searched included Medline, EMBASE, and the Cochrane Libraries. Recommendations within the guidelines were developed by the panel to prioritise clinically important care decisions. The strength of each recommendation was determined according to a balance between desirable and undesirable consequences of alternative management strategies, the quality of the evidence (including the certainty of estimates), and the nature and variability of patient values and preferences.

KEY FINDINGS AND LIMITATIONS

Key recommendations emphasise the importance of thorough diagnosis, treatment, and follow-up for patients with NMIBC. The guidelines stress the importance of defining patients' risk stratification and treating them appropriately.

CONCLUSIONS AND CLINICAL IMPLICATIONS

This overview of the 2024 EAU guidelines offers valuable insights into risk factors, diagnosis, classification, prognostic factors, treatment, and follow-up of NMIBC. These guidelines are designed for effective integration into clinical practice.

French AFU Cancer Committee Guidelines - Update 2024-2026: Non-muscle invasive bladder cancer (NMIBC)

OBJECTIVE

To update the CCAFU recommendations for the management of non-muscle invasive bladder cancer (NMIBC).

METHODS

A systematic review (Medline) of the literature from 20222024 was performed, taking into account the elements of diagnosis, treatment options and monitoring of NMIBC and evaluating references with their level of evidence.

RESULTS

The diagnosis of NMIBC (Ta, T1, or CIS) is made after complete and deep tumour resection. The use of bladder photodynamic diagnosis and the indication for a second TURBT (4 to 6weeks later) help to improve the initial diagnosis. The risk of recurrence and/or tumour progression is assessed via the EORTC score. By stratifying patients into low-, intermediate- and high-risk groups, adjuvant treatment can be proposed, including endovesical instillations of chemotherapy (immediate postoperative regimen), BCG (induction and maintenance regimen), or even the indication of cystectomy for unresponsive patients.

CONCLUSION

Updating the CCAFU's recommendations should help improve patient management, as well as the diagnosis and treatment of NMIBC.

Deciphering the molecular heterogeneity of intermediate- and (very-)high-risk non-muscle-invasive bladder cancer using multi-layered -omics studies

Bladder cancer (BC) is the most common malignancy of the urinary tract. About 75% of all BC patients present with non-muscle-invasive BC (NMIBC), of which up to 70% will recur, and 15% will progress in stage and grade. As the recurrence and progression rates of NMIBC are strongly associated with some clinical and pathological factors, several risk stratification models have been developed to individually predict the short- and long-term risks of disease recurrence and progression. The NMIBC patients are stratified into four risk groups as low-, intermediate-, high-risk, and very high-risk by the European Association of Urology (EAU). Significant heterogeneity in terms of oncological outcomes and prognosis has been observed among NMIBC patients within the same EAU risk group, which has been partly attributed to the intrinsic heterogeneity of BC at the molecular level. Currently, we have a poor understanding of how to distinguish intermediate- and (very-)high-risk NMIBC with poor outcomes from those with a more benign disease course and lack predictive/prognostic tools that can specifically stratify them according to their pathologic and molecular properties. There is an unmet need for developing a more accurate scoring system that considers the treatment they receive after TURBT to enable their better stratification for further follow-up regimens and treatment selection, based also on a better response prediction to the treatment. Based on these facts, by employing a multi-layered -omics (namely, genomics, epigenetics, transcriptomics, proteomics, lipidomics, metabolomics) and immunohistopathology approach, we hypothesize to decipher molecular heterogeneity of intermediate- and (very-)high-risk NMIBC and to better stratify the patients with this disease. A combination of different -omics will provide a more detailed and multi-dimensional characterization of the tumor and represent the broad spectrum of NMIBC phenotypes, which will help to decipher the molecular heterogeneity of intermediate- and (very-)high-risk NMIBC. We think that this combinatorial multi-omics approach has the potential to improve the prediction of recurrence and progression with higher precision and to develop a molecular feature-based algorithm for stratifying the patients properly and guiding their therapeutic interventions in a personalized manner.

Rapid Lifestyle Recommendations to Improve Urologic, Heart and Overall Health

PURPOSE OF REVIEW

This literature review is intended to highlight recent correlations between urologic, heart and overall health by emphasizing healthy eating patterns, physical activity, alcohol minimization and tobacco elimination, healthy sleep, weight, cholesterol, blood sugar, blood pressure management, and mental health awareness.

RECENT FINDINGS

Meta-analyses, systematic reviews, and clinical studies espouse a unified message for prevention, reducing the risk of disease recurrence, progression, complementing conventional medical intervention efficacy, and mitigating treatment side effects. Limiting or eliminating alcohol consumption could be considered an independent recommendation and adding a mental health and miscellaneous (genetic risk and lifestyle, planetary health, HPV or other vaccination awareness, spirituality, etc.) category could allow for individualized educational opportunities, synergism appreciation, and self-improvement. Urologic healthcare professionals have the potential to strengthen the collective public health goal of improving the quality and quantity of the lives of patients able to adhere to these heart healthy recommendations.

Effect of smoking on the recurrence and progression of non-muscle-invasive bladder cancer

BACKGROUND

It is well established that smoking is the most significant risk factor for bladder cancer, yet the impact of smoking on the recurrence and progression of non-muscle-invasive bladder cancer (NMIBC) remains a contentious issue.

OBJECTIVE

To review all relevant literature published to date, providing a comprehensive assessment of the effects of smoking on the recurrence and progression of NMIBC, thereby offering a basis for smoking cessation management in NMIBC patients.

METHODS

A search was conducted for all relevant literature published up to April 2024 in PubMed, Web of Science, and Embase databases. The existing literature results and deficiencies were analyzed, and the gaps in understanding between different studies were highlighted, with recommendations for future research.

RESULTS

A total of 24 studies were included in this work. Among them, 14 studies suggested that smoking promotes the recurrence and progression of NMIBC, while another 10 studies concluded that smoking has no effect on the recurrence and progression of NMIBC patients.

CONCLUSIONS

Our research indicates that smoking increases the risk of recurrence and progression in NMIBC patients, and quitting smoking can improve health-related quality of life. High-quality, large-sample prospective cohort studies (or randomized controlled studies) are still needed in the future.

Racial disparities in stage at bladder cancer diagnosis in the US Veterans Affairs healthcare system

OBJECTIVE

To describe patient characteristics and pathological stage at bladder cancer (BCa) diagnosis in a diverse population within a national, equal-access healthcare system.

METHODS

This retrospective cohort study identified 15 966 men diagnosed with BCa in the Veterans Affairs (VA) healthcare system from 2000 to 2020. The primary outcome was pathological stage at diagnosis, determined by index transurethral resection of bladder tumour. Logistic regression was used to assess the relationship between race and stage. Competing risk models tested the association between race and BCa-specific mortality with cumulative incidence estimates.

RESULTS

Of 15 966 BCa patients, 12 868 (81%), 1726 (11%), 493 (3%) and 879 (6%) were White, Black, Hispanic and Other race, respectively. Black patients had significantly higher muscle-invasive bladder cancer (MIBC) rates than White patients (35% vs 32%; P = 0.009). In multivariable analysis, the odds of presenting with MIBC did not differ significantly between Black and White patients (odds ratio [OR] 1.10, 95% confidence interval [CI] 0.98-1.22) or between Hispanic patients (OR 0.82, 95% CI 0.67-1.01) and White patients. Compared to White patients, Black patients had a similar risk of BCa-specific mortality (hazard ratio [HR] 0.89, 95% CI 0.75-1.06), whereas Hispanic patients had a lower risk (HR 0.56, 95% CI 0.38-0.82).

CONCLUSIONS

Black patients presented with the highest rates of de novo MIBC. However, in a large, equal-access healthcare system, this did not result in a difference in BCa-specific mortality. In contrast, Hispanic patients had lower risks of MIBC and BCa-specific mortality.

Changes in the Urinary Microbiome After Transurethral Resection of Non-muscle-Invasive Bladder Cancer: Insights from a Prospective Observational Study

BACKGROUND

This study aimed to characterize the urinary and tumor microbiomes in patients with non-muscle-invasive bladder cancer (NMIBC) before and after transurethral resection of the bladder tumor (TURBT).

METHODS

This single-center prospective study included 26 samples from 11 patients with low-grade Ta papillary NMIBC. Urine samples were collected at the index TURBT and at a 1-year follow-up cystoscopy. The metagenomic analysis of bacterial and archaeal populations was performed based on the highly variable V3-V4 region of the 16S rRNA gene.

RESULTS

Phylogenetic alpha diversity of the bladder microbiome detected in urine was found to be lower at the 1-year follow-up cystoscopy compared to the time of the index TURBT (p < 0.01). Actinomyces, Candidatus cloacimonas, Sphingobacterium, Sellimonas, Fusobacterium, and Roseobacter were more differentially enriched taxa in urine at the follow-up cystoscopy than at the index TURBT. Beta diversity of urine microbiome significantly changed over time (p < 0.05). Phylogenetic alpha diversity of the microbiome was greater in tumor tissues than in paired urine samples (p<0.01). Sphingomonas, Acinetobacter, Candidatus, and Kocuria were more differentially overrepresented in tumor tissues than in urine. The enrichment of the abundance of Corynebacterium and Anaerococcus species in urine collected at TURBT was observed in patients who experienced recurrence within the follow-up period.

CONCLUSIONS

In patients with low-grade NMIBC, the urine microbiome undergoes changes over time after removal of the tumor. The microbiome detected in tumor tissues is more phylogenetically diverse than in paired urine samples collected at TURBT. The interplay between bladder microbiome, tumor microbiome, and their alterations requires further studies to elucidate their predictive value and perhaps therapeutic implications.

Cancer-Specific Survival of Patients with Non-Muscle-Invasive Bladder Cancer: A Population-Based Analysis

BACKGROUND AND PURPOSE

Non-muscle-invasive bladder cancer (NMIBC) constitutes a heterogeneous group of tumors with different prognoses. This population-based study aimed to report real-world cancer-specific survival (CSS) of NMIBC and create a prognostic nomogram based on the identified risk factors.

METHODS

The Surveillance, Epidemiology, and End Results database was searched for patients diagnosed with NMIBC from 2004 to 2015, who underwent transurethral resection of the bladder tumor. The dataset was divided into development and validation cohorts. Factors associated with CSS were identified using Cox proportional hazards and used to develop a prognostic nomogram.

RESULTS

In total, 98,238 patients with NMIBC were included. At the median follow-up of 124 months (IQR 81-157 months), cancer-specific mortality (CSM) was highest for T1HG (19.52%), followed by Tis (15.56%), similar for T1LG and TaHG (10.88% and 9.23%, respectively), and lowest for TaLG (3.76%). Multivariable Cox regression for CSS prediction was utilized to develop a nomogram including the following risk factors: tumor T category and grade, age, tumor size and location, histology type, primary character, race, income, and marital status. In the validation cohort, the model was characterized by an AUC of 0.824 and C-index that reached 0.795.

CONCLUSIONS

To conclude, NMIBC is associated with a significant risk of long-term CSM especially, but not only, in patients with T1HG. Rarely diagnosed TaHG and T1LG tumors should be regarded as high-risk due to approximately 10% CSM. T category, grading, and age remain the most powerful determinants of CSS in NMIBC, but sociodemographic factors might also influence its prognosis.

The prediction of cancer-specific mortality in T1 non-muscle-invasive bladder cancer: comparison of logistic regression and artificial neural network: a SEER population-based study

PURPOSE

To identify the risk factors for 5-year cancer-specific (CSS) and overall survival (OS) and to compare the accuracy of logistic regression (LR) and artificial neural network (ANN) in the prediction of survival outcomes in T1 non-muscle-invasive bladder cancer.

METHODS

This is a population-based analysis using the Surveillance, Epidemiology, and End Results database. Patients with T1 bladder cancer (BC) who underwent transurethral resection of the tumour (TURBT) between 2004 and 2015 were included in the analysis. The predictive abilities of LR and ANN were compared.

RESULTS

Overall 32,060 patients with T1 BC were randomly assigned to training and validation cohorts in the proportion of 70:30. There were 5691 (17.75%) cancer-specific deaths and 18,485 (57.7%) all-cause deaths within a median of 116 months of follow-up (IQR 80-153). Multivariable analysis with LR revealed that age, race, tumour grade, histology variant, the primary character, location and size of the tumour, marital status, and annual income constitute independent risk factors for CSS. In the validation cohort, LR and ANN yielded 79.5% and 79.4% accuracy in 5-year CSS prediction respectively. The area under the ROC curve for CSS predictions reached 73.4% and 72.5% for LR and ANN respectively.

CONCLUSIONS

Available risk factors might be useful to estimate the risk of CSS and OS and thus facilitate optimal treatment choice. The accuracy of survival prediction is still moderate. T1 BC with adverse features requires more aggressive treatment after initial TURBT.