Purified Protein Derivative Skin test prior to bacillus Calmette-Guérin Therapy May have Therapeutic Impact in Patients with Nonmuscle Invasive Bladder Cancer

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Purpose: We investigated the clinical impact of the purified protein derivative skin test prior to bacillus Calmette-Guérin therapy in patients with nonmuscle invasive bladder cancer treated with adjuvant bacillus Calmette-Guérin therapy. Materials and Methods: A total of 498 patients with nonmuscle invasive bladder cancer treated with adjuvant bacillus Calmette-Guérin were included in study, of whom 320 underwent the purified protein derivative skin test 1 to 2 weeks prior to therapy. Oncologic outcomes and the rate of bacillus Calmette-Guérin related side effects were statistically evaluated. Results: The mean ± SD 5-year recurrence-free survival rate in patients who did vs did not undergo the purified protein derivative skin test was 66.6% ± 2.8% and 59.1% ± 4.1%, respectively, which was significantly different (p = 0.048). No significant difference was observed in the progression-free survival rate between patients who did vs did not undergo the test. Multivariate Cox regression analysis revealed that a history of recurrence (HR 1.59, p = 0.02), multiple tumors (HR 1.95, p <0.01), the bacillus Calmette-Guérin Connaught strain (HR 0.71, p = 0.04), 7 or more bacillus Calmette-Guérin instillations (HR 0.70, p = 0.04) and undergoing the purified protein derivative skin test (HR 0.72, p = 0.04) were independently associated with tumor recurrence. Major bacillus Calmette-Guérin related side effects were noted in 77 of the 320 patients (24.1%) who did vs 27 of the 178 (15.2%) who did not undergo the test, which was significantly different (p = 0.02). Conclusions: The purified protein derivative skin test prior to bacillus Calmette-Guérin treatment enhances the therapeutic effects of this treatment and potentially results in a higher incidence of major bacillus Calmette-Guérin related side effects. Combination therapy with bacillus Calmette-Guérin using the purified protein derivative skin test may improve the oncologic outcomes of that therapy.

元の言語English
ジャーナルJournal of Urology
DOI
出版物ステータスAccepted/In press - 2018 1 1

ASJC Scopus subject areas

  • Urology

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