Disease control outcomes from analysis of pooled individual patient data from five comparative randomised clinical trials of degarelix versus luteinising hormone-releasing hormone agonists.
BACKGROUND
Studies comparing the gonadotropin-releasing hormone antagonist, degarelix, with luteinising hormone-releasing hormone (LHRH) agonists indicate differences in outcomes.


OBJECTIVE
To assess differences in efficacy and safety outcomes in a pooled analysis of trials comparing degarelix with LHRH agonists.


DESIGN, SETTING, AND PARTICIPANTS
Data were pooled from five prospective, phase 3 or 3b randomised trials (n=1925) of degarelix and leuprolide or goserelin in men requiring androgen deprivation therapy for the treatment of prostate cancer. Patients received either 3 mo (n=467) or 12 mo (n=1458) of treatment.


INTERVENTION
Men were randomised to receive degarelix (n=1266), leuprolide (n=201), or goserelin (n=458).


OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS
Unadjusted Kaplan-Meier analyses were supported by the Cox proportional hazards model, adjusted for disease-related baseline factors, to estimate hazard ratios (HRs) of efficacy and safety outcomes. The Fisher exact test compared crude incidences of adverse events.


RESULTS AND LIMITATIONS
Prostate-specific antigen (PSA) progression-free survival (PFS) was improved in the degarelix group (HR: 0.71; p=0.017). For patients with baseline PSA levels >20 ng/ml, the HR for PSA PFS was 0.74 (p=0.052). Overall survival (OS) was higher in the degarelix group (HR: 0.47; p=0.023). OS was particularly improved with degarelix in patients with baseline testosterone levels >2 ng/ml (HR: 0.36; p=0.006). In terms of disease-related adverse events, there were, overall, fewer joint-related signs and symptoms, musculoskeletal events, and urinary tract events in the degarelix group.


CONCLUSIONS
These data indicate clinical benefits with degarelix, including a significant improvement in PSA PFS and OS, as well as reduced incidence of joint, musculoskeletal, and urinary tract adverse events, compared with LHRH agonists.
['Klotz|Laurence|L|', 'Miller|Kurt|K|', 'Crawford|E David|ED|', 'Shore|Neal|N|', 'Tombal|Bertrand|B|', 'Karup|Cathrina|C|', 'Malmberg|Anders|A|', 'Persson|Bo-Eric|BE|']
D000368:Aged D000369:Aged, 80 and over D018931:Antineoplastic Agents, Hormonal D017326:Clinical Trials, Phase III as Topic D018572:Disease-Free Survival D007987:Gonadotropin-Releasing Hormone D017273:Goserelin D006801:Humans D016729:Leuprolide D008297:Male D008875:Middle Aged D009842:Oligopeptides D017430:Prostate-Specific Antigen D011471:Prostatic Neoplasms D016032:Randomized Controlled Trials as Topic D015996:Survival Rate D013739:Testosterone D016896:Treatment Outcome
Degarelix Leuprolide Goserelin Androgen deprivation therapy Prostate cancer