Abstract
e16059 Background: Prostate cancer truly is an age-associated disease, approximately half of prostate cancer patients in the Netherlands are aged 70 years or older at the time of diagnosis. However, age above 70 years has been an exclusion criterion in many clinical trials. Hence the knowledge about chemotherapy tolerance and toxicity in patients aged 70 years and above is limited. In this study we evaluated the influence of age on docetaxel chemotherapy in elderly (≥70yrs) castration resistant prostate cancer (CRPC) patients. Methods: Prostate cancer truly is an age-associated disease, approximately half of prostate cancer patients in the Netherlands are aged 70 years or older at the time of diagnosis. However, age above 70 years has been an exclusion criterion in many clinical trials. Hence the knowledge about chemotherapy tolerance and toxicity in patients aged 70 years and above is limited. In this study we evaluated the influence of age on docetaxel chemotherapy in elderly (≥70yrs) castration resistant prostate cancer (CRPC) patients. Results: We analyzed 568 patients (median age 68.1yrs, range 46-89yrs, 44.5% aged ≥70yrs). There was no relation between dosage and age (p=0.60). We found no significant differences between the number of dose reductions, TTP, overall survival, chemotherapy tolerance and toxicity up to the age of 80 years. However, when compared to younger men, men aged 80 years or above more frequently experienced grade 3/4 toxicity, were five times less likely to complete the first three treatment cycles at the intended dose (OR5.34, p=0.0052) and showed decreased overall survival (15.3mos versus 24.5mos in <80yrs group, p=0.020). Conclusions: In mCRPC, and possibly other cancer patients, up to the age of 80 years docetaxel chemotherapy is well tolerated with toxicity levels, tolerance and TTP comparable to that of younger patients. However, for chemotherapeutic treatment of patients aged 80 years and above an individual assessment should be made.
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