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Grabe-Heyne K, Henne C, Mariappan P, Geiges G, Pöhlmann J, Pollock RF. Intermediate and high-risk non-muscle-invasive bladder cancer: an overview of epidemiology, burden, and unmet needs. Front Oncol 2023; 13:1170124. [PMID: 37333804 PMCID: PMC10272547 DOI: 10.3389/fonc.2023.1170124] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/19/2023] [Indexed: 06/20/2023] Open
Abstract
Bladder cancer ranks among the most common cancers globally. At diagnosis, 75% of patients have non-muscle-invasive bladder cancer (NMIBC). Patients with low-risk NMIBC have a good prognosis, but recurrence and progression rates remain high in intermediate- and high-risk NMIBC, despite the decades-long availability of effective treatments for NMIBC such as intravesical Bacillus Calmette-Guérin (BCG). The present review provides an overview of NMIBC, including its burden and treatment options, and then reviews aspects that counteract the successful treatment of NMIBC, referred to as unmet treatment needs. The scale and reasons for each unmet need are described based on a comprehensive review of the literature, including insufficient adherence to treatment guidelines by physicians because of insufficient knowledge, training, or access to certain therapy options. Low rates of lifestyle changes and treatment completion by patients, due to BCG shortages or toxicities and adverse events as well as their impact on social activities, represent additional areas of potential improvement. Highly heterogeneous evidence for the effectiveness and safety of some treatments limits the comparability of results across studies. As a result, efforts are underway to standardize treatment schedules for BCG, but intravesical chemotherapy schedules remain unstandardized. In addition, risk-scoring models often perform unsatisfactorily due to significant differences between derivation and real-world cohorts. Reporting in clinical trials suffers from a lack of consistent outcomes reporting in bladder cancer clinical trials, paired with an under-representation of racial and ethnic minorities in many trials.
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Affiliation(s)
| | | | - Paramananthan Mariappan
- Edinburgh Bladder Cancer Surgery (EBCS), Department of Urology, Western General Hospital, Edinburgh, United Kingdom
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Yuen JW, Wu RW, Ching SS, Ng CF. Impact of Effective Intravesical Therapies on Quality of Life in Patients with Non-Muscle Invasive Bladder Cancer: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10825. [PMID: 36078542 PMCID: PMC9518426 DOI: 10.3390/ijerph191710825] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Conventional and newly emerged intravesical modalities have demonstrated prophylactic effectiveness that may improve quality of life (QoL) in non-muscle invasive bladder cancer. The purpose of this study is to analyze existing QoL evidence in patients receiving any form of intravesical therapy. METHODS A PubMed search without time restriction was conducted to identify all relevant studies in accordance with the PICOT question. Additionally, a search was also performed in the Cochrane library database, Internet, and citation. The CONSORT 2010 checklist and STROBE statement checklist were used to evaluate the risk of bias of the included studies. RESULTS A total of 24 eligible articles were included, which consisted of 11 interventional and 13 observational studies. Intravesical therapy with Bacillus Calmette-Guérin (BCG) or certain chemotherapeutic agents worsens symptom burdens and functional performance during the initial induction phase while continuous improved is observed throughout the maintenance treatment and beyond. Hyperthermia has shown a positive trend in enhancing QoL of patients receiving intravesical chemotherapy, which requires more investigations. However, QoL data were unavailable for other forms of immunotherapy, immune checkpoint inhibitors, electromotive drug administration, and photodynamic therapy. CONCLUSIONS Limited studies suggested the long-term positive impact of intravesical BCG immunotherapy and chemotherapy. However, existing evidence was lacking to clarify the impact of many emerging intravesical therapies that have suggested to be effective and safe, which demands treatment-specific QoL studies.
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Affiliation(s)
- John W. Yuen
- School of Nursing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Ricky W. Wu
- Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow G4 OBA, UK
| | - Shirley S. Ching
- School of Nursing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Chi-Fai Ng
- S.H. Ho Urology Centre, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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Roumiguié M, Kamat AM, Bivalacqua TJ, Lerner SP, Kassouf W, Böhle A, Brausi M, Buckley R, Persad R, Colombel M, Lamm D, Palou-Redorta J, Soloway M, Brothers K, Steinberg G, Lotan Y, Sylvester R, Alfred Witjes J, Black PC. International Bladder Cancer Group Consensus Statement on Clinical Trial Design for Patients with Bacillus Calmette-Guérin-exposed High-risk Non-muscle-invasive Bladder Cancer. Eur Urol 2022; 82:34-46. [PMID: 34955291 DOI: 10.1016/j.eururo.2021.12.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/22/2021] [Accepted: 12/03/2021] [Indexed: 11/21/2022]
Abstract
CONTEXT A large proportion of patients with non-muscle-invasive bladder cancer (NMIBC) fall in the gap between bacillus Calmette-Guérin (BCG)-naïve and BCG-unresponsive disease. As multiple therapeutic agents move into this gray area, there is a critical need to define the disease state and establish recommendations for optimal trial design. OBJECTIVE To develop a consensus on optimal trial design for patients with BCG-exposed NMIBC, defined as high-grade recurrence after BCG treatment that does not meet the criteria for BCG-unresponsive disease. EVIDENCE ACQUISITION We conducted a literature review using the Cochrane Library, Medline, and Embase and a review of clinical trials in ClinicalTrials.gov as a basis to generate consensus recommendations for clinical trial design in BCG-exposed NMIBC. EVIDENCE SYNTHESIS BCG-exposed NMIBC encompasses BCG resistance (presence of high-grade Ta or carcinoma in situ [CIS] at 3-mo evaluation after induction BCG) and delayed relapse. Randomized controlled trials are required to compare experimental therapies to a control arm receiving additional BCG, although ongoing BCG shortages may impact our ability to follow an optimal trial design. A placebo should be used in combination with BCG if the treatment arm includes BCG plus a study drug. Trials will either need to separate patients with and without CIS into two cohorts, or stratify by the presence of CIS at the time of randomization. If two cohorts are used, the primary endpoint for CIS patients should be complete response within a predetermined time. The primary endpoint in a cohort with Ta/T1 only, or if a single combined cohort is used, should be the duration of event-free survival. Suggested efficacy thresholds and corresponding sample sizes are provided. CONCLUSIONS The International Bladder Cancer Group has developed recommendations regarding definitions, endpoints, and clinical trial design for BCG-exposed NMIBC to encourage uniformity among studies in this disease state. PATIENT SUMMARY Our consensus provides a precise definition of the disease state for bladder cancer not invading the bladder muscle and exposed to bacillus Calmette-Guérin (BCG) treatment. Clear guidance for conducting optimal clinical trials in this disease setting was established and we believe that this will promote further progress in this field.
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Affiliation(s)
- Mathieu Roumiguié
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, Canada; Department of Urology, Toulouse Cancer Institute and Toulouse University Hospital, Toulouse, France
| | - Ashish M Kamat
- Department of Urology, MD Anderson Cancer Center, Houston, TX, USA
| | - Trinity J Bivalacqua
- Perelman Center for Advanced Medicine, University of Pennsylvania, Division of Urology, Department of Surgery, Philadelphia, PA.
| | - Seth P Lerner
- Scott Department of Urology, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Wassim Kassouf
- Department of Surgery (Urology), Faculty of Medicine, McGill University, Montreal, Canada
| | - Andreas Böhle
- Departments of Urology, University of Lübeck, Lübeck, Germany; HELIOS Agnes-Karll-Krankenhaus, Bad Schwartau, Germany
| | | | - Roger Buckley
- North York General Hospital, Toronto, Ontario, Canada
| | - Raj Persad
- Department of Urology, Southmead Hospital, North Bristol Hospitals Trust, Bristol, UK
| | - Marc Colombel
- Claude Bernard University, Hôpital Edouard Herriot, Lyon, France
| | - Donald Lamm
- University of Arizona and BCG Oncology, Phoenix, AZ, USA
| | - Juan Palou-Redorta
- Department of Urology, Fundació Puigvert, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Mark Soloway
- Division of Urology, Memorial Cancer Institute, Memorial Hospital, Hollywood, FL, USA
| | - Ken Brothers
- Patient Advocate, National Cancer Institute Bladder Cancer Task Force, Snowbasin, UT, USA
| | - Gary Steinberg
- Department of Urology, NYU Langone Health, New York, NY, USA
| | - Yair Lotan
- Department of Urology, UT Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Richard Sylvester
- European Association of Urology Guidelines Office, Brussels, Belgium
| | - J Alfred Witjes
- Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter C Black
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, Canada.
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