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  • Title: Sequential Intravesical Valrubicin and Docetaxel for the Salvage Treatment of Non-Muscle-Invasive Bladder Cancer.
    Author: McElree IM, Packiam VT, Steinberg RL, Mott SL, Gellhaus PT, Nepple KG, O'Donnell MA.
    Journal: J Urol; 2022 Nov; 208(5):969-977. PubMed ID: 35830552.
    Abstract:
    PURPOSE: Intravesical gemcitabine-docetaxel has emerged as an efficacious and well-tolerated salvage therapy for non-muscle-invasive bladder cancer. However, further rescue therapies are needed for subsequent recurrences or intolerance, particularly when cystectomy is refused or precluded. Valrubicin is a U.S. Food and Drug Administration-approved agent for bacillus Calmette-Guérin unresponsive disease, yet as monotherapy has demonstrated poor efficacy. We report our experience with sequential intravesical valrubicin and docetaxel as a rescue therapy for non-muscle-invasive bladder cancer. MATERIALS AND METHODS: We retrospectively identified all patients with recurrent non-muscle-invasive bladder cancer treated with valrubicin and docetaxel between April 2013 and June 2021. Patients received weekly sequential intravesical instillations of 800 mg valrubicin and 37.5 mg docetaxel for 6 weeks. If disease-free at first follow-up, monthly maintenance of 2 years was initiated. The primary outcome was recurrence-free survival, assessed using the Kaplan-Meier method. RESULTS: The analysis included 75 patients with median follow-up of 21 months (IQR: 13-37). Twelve patients with low-grade disease had a 73% recurrence-free survival at 2 years. Sixty-three patients with recurrent high-grade disease had a 38% 2-year high-grade recurrence-free survival. Forty-two (56%) patients had carcinoma in situ present; recurrence-free survival was similar for those with and without carcinoma in situ (P = .63). Two patients died of metastatic bladder cancer while 10 underwent cystectomy. Among patients with high-grade disease, overall, cancer-specific, and cystectomy-free survivals were 87%, 96%, and 84% at 2 years, respectively. Adverse events included bladder spasms (n = 18), urinary frequency (n = 10), and dysuria (n = 8). Two patients could not tolerate valrubicin and docetaxel induction. CONCLUSIONS: In a heavily pretreated population, our results suggest valrubicin and docetaxel is an effective rescue treatment for patients with recurrent non-muscle-invasive bladder cancer. Further prospective evaluation is needed.
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