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  • Title: [Metronomic chemotherapy with oral cyclophosphamide : An individual option for the metastatic castration-resistant prostate cancer patient?].
    Author: Knipper S, Mandel P, V Amsberg G, Strölin P, Graefen M, Steuber T.
    Journal: Urologe A; 2019 Apr; 58(4):410-417. PubMed ID: 29808369.
    Abstract:
    BACKGROUND: Multiple experimental approaches are meanwhile available for progressive metastatic castration resistant prostate cancer (mCRPC) patients after failure of guideline recommended therapy (i. e., chemotherapy and/or hormonal treatment). We evaluated the outcome of metronomic chemotherapy with cyclophosphamide (CY) in combination with low-dose prednisolone. MATERIALS AND METHODS: A total of 14 mCRPC-patients were treated with CY 50 mg/day (plus prednisolone 10 mg/day) between November 2012 and September 2017 after being resistant or unfit for chemotherapy and/or further hormonal treatment. Time to progression and overall survival (OS) were retrospectively determined by using Kaplan-Meier curves. RESULTS: Eight of 14 (57.1%) patients had undergone radical prostatectomy and 2 (14.3%) external beam radiation. All patients had at least three therapy lines and 50% had ≥5 mCRPC therapies. The median time from first diagnosis to mCRPC was 88 months; the median age was 78 years with a median baseline serum prostate-specific antigen (PSA) level of 341 ng/ml. With a median follow-up of 16.4 months, progression-free survival (PFS) was 71, 64, and 43% after 2, 4, and 6 months, respectively. Median OS was 8.1 months. No relevant adverse events occurred. CONCLUSION: Since CY is a well-tolerated medication with partially good clinical tumor control, it seems to be a convenient, individual treatment option in progressive mCRPC patients after failure of guideline recommended therapy.
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