Cytokine Panel for Response to Intravesical Therapy (CyPRIT): Nomogram of Changes in Urinary Cytokine Levels Predicts Patient Response to Bacillus Calmette-Guérin.

Abstract:

UNLABELLED:The response of non-muscle-invasive bladder cancer (NMIBC) to intravesical immunotherapy with bacillus Calmette-Guérin (BCG) depends on adequate stimulation of an immune response. Although BCG has been used for decades, we lack tools to accurately predict response in individual patients. To address this deficiency, we initiated a clinical trial in patients with intermediate- and high-risk NMIBC. BCG was administered according to the Southwest Oncology Group protocol. Urine samples were collected for cytokine assay at baseline, immediately before and after BCG instillation at 6 wk, and immediately before and after the third BCG instillation of the first maintenance course. Levels of 12 cytokines were measured, and changes from baseline were calculated after treatment. A total of 130 patients were enrolled. Increases in single cytokines correlated with recurrence, but the best predictor of recurrence was changes in a combination of cytokines. A nomogram (CyPRIT) constructed using urinary levels of nine inducible cytokines (IL-2, IL-6, IL-8, IL-18, IL-1ra, TRAIL, IFN-γ, IL-12[p70], and TNF-α) predicted the likelihood of recurrence with 85.5% accuracy (95% confidence interval 77.9–93.1%).” This cytokine panel and nomogram have potential for identifying patients at risk of tumor recurrence during BCG treatment to guide modification of the dose and duration of BCG immunotherapy. TRIAL REGISTRATION:Clinicaltrials.gov NCT01007058.

journal_name

Eur Urol

journal_title

European urology

authors

Kamat AM,Briggman J,Urbauer DL,Svatek R,Nogueras González GM,Anderson R,Grossman HB,Prat F,Dinney CP

doi

10.1016/j.eururo.2015.06.023

subject

Has Abstract

pub_date

2016-02-01 00:00:00

pages

197-200

issue

2

eissn

0302-2838

issn

1873-7560

pii

S0302-2838(15)00526-6

journal_volume

69

pub_type

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