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Prognostic Factors and Risk Groups in T1G3 Non-Muscle-invasive Bladder Cancer Patients Initially Treated with Bacillus Calmette-Guerin: Results of a Retrospective Multicenter Study of 2451 Patients
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2015 (English)In: European Urology, ISSN 0302-2838, E-ISSN 1873-7560, Vol. 67, no 1, 74-82 p.Article in journal (Refereed) Published
Abstract [en]

Background: The impact of prognostic factors in T1G3 non-muscle-invasive bladder cancer (BCa) patients is critical for proper treatment decision making. Objective: To assess prognostic factors in patients who received bacillus Calmette Guerin (BCG) as initial intravesical treatment of T1G3 tumors and to identify a subgroup of high-risk patients who should be considered for more aggressive treatment. Design, setting, and participants: Individual patient data were collected for 2451 T1G3 patients from 23 centers who received BCG between 1990 and 2011. Outcome measurements and statistical analysis: Using Cox multivariable regression, the prognostic importance of several clinical variables was assessed for time to recurrence, progression, BCa-specific survival, and overall survival (OS). Results and limitations: With a median follow-up of 5.2 yr, 465 patients (19%) progressed, 509 (21%) underwent cystectomy, and 221 (9%) died because of BCa. In multivariable analyses, the most important prognostic factors for progression were age, tumor size, and concomitant carcinoma in situ (CIS); the most important prognostic factors for BCa-specific survival and OS were age and tumor size. Patients were divided into four risk groups for progression according to the number of adverse factors among age >= 70 yr, size >= 3 cm, and presence of CIS. Progression rates at 10 yr ranged from 17% to 52%. BCa-specific death rates at 10 yr were 32% in patients >= 70 yr with tumor size >= 3 cm and 13% otherwise. Conclusions: T1G3 patients >= 70 yr with tumors >= 3 cm and concomitant CIS should be treated more aggressively because of the high risk of progression. Patient summary: Although the majority of T1G3 patients can be safely treated with intravesical bacillus Calmette-Guerin, there is a subgroup of T1G3 patients with age >= 70 yr, tumor size >= 3 cm, and concomitant CIS who have a high risk of progression and thus require aggressive treatment.

Place, publisher, year, edition, pages
2015. Vol. 67, no 1, 74-82 p.
Keyword [en]
Bacillus Calmette-Guerin, BCG, Non-muscle-invasive bladder cancer, Prognostic factors, T1G3
National Category
Urology and Nephrology
URN: urn:nbn:se:uu:diva-240056DOI: 10.1016/j.eururo.2014.06.040ISI: 000345615400020PubMedID: 25043942OAI: oai:DiVA.org:uu-240056DiVA: diva2:775922
Available from: 2015-01-05 Created: 2015-01-05 Last updated: 2015-01-05Bibliographically approved

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