Should docetaxel be standard of care for patients with metastatic hormone-sensitive prostate cancer? Pro and contra

Fizazi K. (1), Jenkins C. (2), Tannock IF. (3)
– (1) Onkológiai Tanszék, Goustav Roussy, Dél-Párizsi Egyetem, Párizs, Franciaország
– (2) Med Ed, RMC, Exeter, Egyesült Királyság
– (3) Margit Hercegnő Rákkutató Központ és Torontói Egyetem, Toronto, Kanada

Following the results of the TAX-327 study, questions have been raised as to whether administering chemotherapy to patient with prostate cancer before symptomatic disease progression when receiving standard hormonal treatment can improve the duration and quality of survival. The GETUG-AFU-15 and CHAARTED studies assessed the effi cacy and tolerability of androgen deprivation therapy (ADT) with or without docetaxel in patients with metastatic hormone-naive prostate cancer. Both studies included a mix of patients with de novo metastatic disease (~75%) and patients with metastases following treatment of localized disease. A short course of ADT was allowed in both trials prior to accrual. Key differences between the two studies include the number of patients with high-volume metastases (GETUGAFU- 15: 52%; CHAARTED: 65%) and number of docetaxel cycles (GETUG-AFU-15: up to nine cycles; CHAARTED six cycles). Both studies reported an improvement in progression-free survival with docetaxel plus ADT versus ADT alone. The GETUG-AFU-15 did not fi nd a signifi cant difference in the primary end point of overall survival (OS) [hazard ratio (HR) 0.9 (95% confi dence interval (CI) 0.7–1.2); P = 0.44] for ADT plus docetaxel versus ADT alone. The CHAARTED study met the primary end point of OS [HR 0.61 (95% CI 0.47–0.80); P = 0.0003], and in a subset analysis reported the greatest improvement in OS for patients with high-volume disease [HR 0.60 (95% CI 0.45–0.81); P = 0.0006]. The following review debates the results from the GETUG-AFU-15 and CHAARTED studies and asks whether medical practice should be changed for patients with metastatic hormone-naive prostate cancer based on the results of one positive study.


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