• Meral Sayin and Gokhan Celenkoglu.
• Department of Radiation Oncology, Health Sciences University, Ankara Training and Research Hospital, Ankara, Turkey.
• J Coll Physicians Surg Pak. 2022 Aug 1; 32 (8): 1026-1032.

ObjectiveTo evaluate and compare the effects and toxicity of weekly low dose with three weekly standard doses of docetaxel in hormone-resistant metastatic prostate cancer.Study DesignDescriptive study.Place And Duration Of StudyUniversity of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey, from January 2013 to July 2021.MethodologyThe study was conducted on 79 patients with refractory prostate cancer. Patients were assessed in 2 groups. One group was treated with the classical standard Docetaxel dose 75 mg/m2/day (every 3-week) + Prednisolone 10 mg/day (daily), whereas the second group consisting of elderly and poor performance status received a low dose Docetaxel 25 mg/m2/day (weekly, 1-week interval) + Prednisolone 10 mg/day (daily).ResultsThe overall survival and toxicity profile differences between the low dose protocol in this study and the standard treatment protocol were compared. Survival times in both groups were found as 44.3 months and 35.5 months in 1-week and 3-week interval groups, respectively (p = 0.09). The rate of hematologic toxicity associated with systemic treatment was 10% in the 1-week interval treatment group and 41% in the 3-week group (p = 0.002). In particular, the febrile neutropenia was 30.8% in the 3-week interval group and 2.5% (p = 0.001) in the 1-week interval group.ConclusionThe study showed that instead of using docetaxel in the standard dose and range, it is more tolerated in elderly and poor performance patients when administered in the revised dose. The disrupting effects of chemotherapy are overperforming, especially in such patients.Key WordsMetastatic prostate cancer, Hormone resistant prostate cancer, Weekly docetaxel.

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