Changes in Quality of Life and Sexual Function After Luteinizing Hormone-Releasing Hormone (LHRH) Agonists and Orchiectomy in Men With Metastatic Prostate Cancer: Results From a Randomized Trial

Purpose To examine changes in quality of life (QoL) in men diagnosed with metastatic prostate cancer undergoing androgen deprivation therapy (ADT). Methods This was a phase IV trial where patients were randomized to either triptorelin or subcapsular orchiectomy. We report changes in QoL, functional and symptom scales, and sexual function. These were assessed using the validated questionnaires, namely, the European Organisation for Research and Treatment of Cancer (EORTC) Core Quality of Life Questionnaire (EORTC-QLQ-C30), European Organization of Research and Treatment of Cancer Quality of Life Questionnaire Prostate Cancer 25 (EORTC-QLQ-PR25), and Erectile Hardness Scale (EHS) before treatment and at 12, 24, and 48 weeks, respectively. Data were analyzed using linear mixed models for repeated measures. Results Fifty-seven men with a median age of 74 years were randomized. The pooled analyses showed that QoL (p=0.003), emotional function (p<0.001), urinary symptoms (p=0.011), and hormonal treatment-related symptoms (p<0.001) changed significantly between visits. Improvement from baseline in QoL (mean change: 6.8 points (95% confidence interval (CI 95% CI): 2.1; 11.5)), emotional function (6.9 points: 3.3, 10.6), and urinary symptoms (-7.7 points (-12.3; -3.0)) was most pronounced at 24 weeks. Hormonal treatment-related symptoms (8.9 points (95% CI: 5.9; 12.0)) worsened. No significant differences between treatment groups were observed. At baseline, 29 men (51%) reported interest in sex, 18 were sexually active, and 12 had erections hard enough for penetration. At 48 weeks seven reported interest in sex, five were sexually active, and one man had a hard enough erection for penetration. Conclusions Men with newly diagnosed metastatic prostate cancer experience improved QoL and emotional function after starting ADT. Urinary symptoms improved, while hormonal treatment-related symptoms worsened. Interest in sex and sexual activity was retained in a proportion of men despite ADT.