Long-term outcomes in patients with prostate cancer managed with intermittent androgen suppression

Urologia Internationalis
T M LaneR Tim D Oliver

Abstract

To assess the long-term outcomes of patients with prostate cancer managed with intermittent androgen suppression (IAS) following their enrollment in an open, non-randomised feasibility study initiated 10 years ago. Patients with prostate cancer who developed marked side effects following androgen deprivation were considered for entry into the study. All patients were required to have been managed with androgen deprivation for a minimum of 9 months and to have achieved PSA remissions to levels <4 ng/ml or falls to greater than 90% of pre-treatment levels. Patients remained off treatment until PSA values rose to >20 ng/ml or individuals became symptomatic--at which stage a 9-month cycle of androgen suppression was repeated. Such on-off cycling continued until hormone-resistant disease developed and patients proceeded (off trial) to second-line therapies. 75 patients were recruited to the study following an initial referral with treatment-related side effects specifically associated with androgen deprivation. 86% of these remain alive at a median of 134 months (11 years) since initial histological diagnosis. Survival times and times to hormone resistance (from first cycle hormone deprivation) have also been calculated. Overall the...Continue Reading

Citations

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