Safety and Tolerability of Relugolix in Combination with Abiraterone or Apalutamide for Treatment of Patients with Advanced Prostate Cancer: Data from a 52-Week Clinical Trial.

IF 4.4 3区医学 Q2 ONCOLOGY

Targeted Oncology Pub Date : 2025-04-04 DOI:10.1007/s11523-025-01139-3

Jose De La Cerda, Laurence Belkoff, Kevin D Courtney, Elan Diamond, James D'Olimpio, Curtis Dunshee, Lawrence Gervasi, Michael Goodman, Kriti Mittal, David Morris, Paul Sieber, Ronald Tutrone, Michael Ryan, Yi Zhong, Mike Ufer, Neal Shore

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引用次数: 0

Abstract

Background: The gonadotropin-releasing hormone (GnRH) receptor antagonist relugolix is the only oral androgen deprivation therapy (ADT) indicated for advanced prostate cancer (aPC). Combining ADT with androgen receptor signaling inhibitors (ARSIs) has shown improved clinical outcomes.

Objective: To assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of relugolix in combination with ARSIs in patients with aPC.

Methods: In this 52-week, open-label study, patients received relugolix (120 mg once daily) with abiraterone (1,000 mg once daily) and corticosteroid (Part 1) or relugolix (240 mg once daily) with apalutamide (240 mg once daily) (Part 2). Metastatic castration-sensitive patients were eligible for both parts, whereas castration-resistant patients were eligible for Part 1 if metastatic and Part 2 if non-metastatic. Adverse events and other safety data were evaluated over 52 weeks, while pharmacodynamic and pharmacokinetic (Part 2 only) data were assessed over 12 weeks. Medication adherence to relugolix was measured by pill count.

Results: Of 48 patients, 21 completed Part 1 and 20 completed Part 2. Most adverse events were grade 1 or 2, with hypertension (Part 1) and rash (Part 2) being most common. Mean testosterone concentrations remained below castrate level. Median prostate-specific antigen concentration was 0.04 ng/mL at week 12 in both parts. Concentrations of relugolix, apalutamide, and N-desmethyl-apalutamide were stable over 12 weeks similar to previous data. Relugolix adherence rates were > 97% in both parts.

Conclusions: The safety/tolerability profile of both combination therapies was consistent with those of the individual drugs. These findings support using relugolix in combination with abiraterone or apalutamide as treatment of aPC.

Clinical trial registration: ClinicalTrials.gov identifier NCT04666129.

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来源期刊

Targeted Oncology 医学-肿瘤学

CiteScore

8.40

自引率

3.70%

发文量

审稿时长

>12 weeks

期刊介绍： Targeted Oncology addresses physicians and scientists committed to oncology and cancer research by providing a programme of articles on molecularly targeted pharmacotherapy in oncology. The journal includes: Original Research Articles on all aspects of molecularly targeted agents for the treatment of cancer, including immune checkpoint inhibitors and related approaches. Comprehensive narrative Review Articles and shorter Leading Articles discussing relevant clinically established as well as emerging agents and pathways. Current Opinion articles that place interesting areas in perspective. Therapy in Practice articles that provide a guide to the optimum management of a condition and highlight practical, clinically relevant considerations and recommendations. Systematic Reviews that use explicit, systematic methods as outlined by the PRISMA statement. Adis Drug Reviews of the properties and place in therapy of both newer and established targeted drugs in oncology.