Journal article
Predicting Response to Intravesical Bacillus Calmette-Guérin Immunotherapy: Are We There Yet? A Systematic Review
European urology, Vol.73(5), pp.738-748
05/2018
DOI: 10.1016/j.eururo.2017.10.003
PMID: 29055653
Abstract
Bacillus Calmette-Guérin (BCG) is currently the most effective intravesical therapy for nonmuscle invasive bladder cancer, reducing not only recurrence rates but also preventing progression and reducing deaths. However, response rates to BCG vary widely and are dependent on a multitude of factors.
To review existing data on clinical, pathologic, immune, and molecular markers that allow prediction of BCG response.
PubMed and MEDLINE search of English language literature was conducted from its inception to July 2017 using appropriate search terms. Following systematic literature review and analysis of data, consensus voting was used to generate the content of this review.
As seen in the EORTC and CUETO risk nomograms, clinicopathologic features, especially tumor stage and grade, are the most effective predictors of BCG response. Data are less robust with regards to the association of response with age, female sex, recurrent tumors, multiplicity of tumors, and the presence of carcinoma in situ. Single biomarkers, such as tumor p53 and urinary interleukin-2 expression, have had limited success in predicting BCG response, possibly due to the multifaceted nature of the generated immune response. More comprehensive biomarker panels (eg, urinary cytokines), have a more robust correlation with response, as do patterns of urinary cytologic fluorescent in-situ hybridization examination. Gene expression data correlate with disease progression, but studies examining potential associations with BCG response are limited.
Currently, the best predictors of BCG response are clinicopathologic features such as tumor grade and stage. Panels of urinary cytokines, as well as fluorescent in-situ hybridization patterns of cytologic anomalies, appear to be promising biomarkers. The complexity of the immune response to BCG and the heterogeneity of bladder cancer suggest that future studies should amalgamate measures reflecting innate immune response and tumor/stromal gene expression before these can be adopted for clinical use.
Bacillus Calmette-Guérin (BCG) immunotherapy is an effective treatment for many patients with nonmuscle invasive bladder cancer. An individual's response to BCG can be predicted by using various features of the cancer. In the future, predictive markers using molecular measures of the tumor type and the immune response to BCG may allow us to precisely know an individual's likely outcome after BCG treatment.
Predicting response to intravesical bacillus Calmette-Guérin remains elusive. The best available predictors are tumor grade and stage, with biomarker panels such as cytologic fluorescent in-situ hybridization, and cytokine panels (eg, Cytokine Panel for Response to Intravesical Therapy (CyPRIT) assay) which query the complex immunogenic response, holding promise.
Details
- Title: Subtitle
- Predicting Response to Intravesical Bacillus Calmette-Guérin Immunotherapy: Are We There Yet? A Systematic Review
- Creators
- Ashish M. Kamat - The University of Texas MD Anderson Cancer CenterRoger Li - The University of Texas MD Anderson Cancer CenterMichael A. O’Donnell - University of IowaPeter C. Black - University of British ColumbiaMorgan Roupret - Sorbonne UniversitéJames W. Catto - Royal Hallamshire HospitalEva Comperat - Hôpital TenonMolly A. Ingersoll - Institut PasteurWim P. Witjes - EAU Research Foundation, EAU Central Office, Arnhem, The NetherlandsDavid J. McConkey - Johns Hopkins UniversityJ. Alfred Witjes - Radboud University Medical Center
- Resource Type
- Journal article
- Publication Details
- European urology, Vol.73(5), pp.738-748
- Publisher
- Elsevier B.V
- DOI
- 10.1016/j.eururo.2017.10.003
- PMID
- 29055653
- ISSN
- 0302-2838
- eISSN
- 1873-7560
- Language
- English
- Date published
- 05/2018
- Academic Unit
- Urology
- Record Identifier
- 9984319978602771
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