A Study of Enzalutamide Plus Androgen Deprivation Therapy (ADT) Versus Placebo Plus ADT in Patients With Metastatic Hormone Sensitive Prostate Cancer (mHSPC)
Summary
The purpose of this study was to evaluate the efficacy of enzalutamide plus androgen deprivation therapy (ADT) as measured by radiographic progression-free survival (rPFS) based on central review. The study also evaluated the safety of enzalutamide plus ADT in mHSPC.
Timeline
- Start
- 2016-03-09
- Primary completion
- 2018-10-14
- Completion
- 2024-07-31
Outcome
Met primary endpoint
registry Enzalutamide + Androgen Deprivation Therapy (ADT) vs Placebo + Androgen Deprivation Therapy (ADT); p <0.0001; Cox hazard ratio 0.39 (95% CI 0.30 to 0.50) NCT02677896 ↗
paper risk of radiographic progression or death was significantly reduced with enzalutamide plus ADT versus placebo plus ADT PMID 31329516 ↗
release “Phase 3 ARCHES trial evaluating XTANDI® (enzalutamide) plus androgen deprivation therapy (ADT) in men with metastatic hormone-sensitive prostate cancer (mHSPC) met its primary endpoint” astellas.com ↗
release “Phase 3 ARCHES Trial Shows XTANDI® (enzalutamide) Significantly Improved Radiographic Progression-Free Survival in Men with Metastatic Hormone-Sensitive Prostate Cancer” astellas.com ↗
release “ARCHES, a randomized Phase 3 study which evaluated 1,150 men with mCSPC and met its primary endpoint” pfizer.com ↗
release “The primary results from the ARCHES trial were published in the Journal of Clinical Oncology in 2019. The study met its primary endpoint” astellas.com ↗
Publications
- Results Armstrong AJ, Szmulewitz RZ, Petrylak DP, Holzbeierlein J, Villers A, Azad A, Alcaraz A, Alekseev B, Iguchi T, Shore ND, Rosbrook B, Sugg J, Baron B, Chen L, Stenzl A. ARCHES: A Randomized, Phase III Study of Androgen Deprivation Therapy With Enzalutamide or Placebo in Men With Metastatic Hormone-Sensitive Prostate Cancer. J Clin Oncol. 2019 Nov 10;37(32):2974-2986. doi: 10.1200/JCO.19.00799. Epub 2019 Jul 22.
- Armstrong AJ, Azad AA, Iguchi T, Stenzl A, Mottet N, Russell D, Rosales M, Haas GP, Saad F, Hussain M, Sternberg CN. Radiographic Progression With and Without Prostate-Specific Antigen Rise in Patients With Advanced Prostate Cancer Treated With Enzalutamide. J Clin Oncol. 2026 May 10;44(14):1309-1322. doi: 10.1200/JCO-24-02829. Epub 2026 Mar 27.
- Azad AA, Petrylak DP, Iguchi T, Shore ND, Villers A, Gomez-Veiga F, Alcaraz A, Alekseev B, Szmulewitz RZ, Holzbeierlein J, Rosbrook B, Ma J, Zohren F, El-Chaar NN, Haas GP, Stenzl A, Armstrong AJ. Enzalutamide and Prostate-Specific Antigen Levels in Metastatic Prostate Cancer: A Secondary Analysis of the ARCHES Randomized Clinical Trial. JAMA Netw Open. 2025 May 1;8(5):e258751. doi: 10.1001/jamanetworkopen.2025.8751.
- Armstrong AJ, Azad AA, Conduit C, Haas GP, Bland C, Davis ID. Enzalutamide in metastatic hormone-sensitive prostate cancer: A plain language summary of the ARCHES and ENZAMET follow-up studies. Future Oncol. 2025 Jan;21(1):15-24. doi: 10.1080/14796694.2024.2408101. Epub 2024 Oct 15.
- Armstrong AJ, Iguchi T, Azad AA, Villers A, Alekseev B, Petrylak DP, Szmulewitz RZ, Alcaraz A, Shore ND, Holzbeierlein J, Gomez-Veiga F, Rosbrook B, Zohren F, Haas GP, Gourgiotti G, El-Chaar N, Stenzl A. The Efficacy of Enzalutamide plus Androgen Deprivation Therapy in Oligometastatic Hormone-sensitive Prostate Cancer: A Post Hoc Analysis of ARCHES. Eur Urol. 2023 Aug;84(2):229-241. doi: 10.1016/j.eururo.2023.04.002. Epub 2023 May 12.
- Cella D, Ganguli A, Turnbull J, Rohay J, Morlock R. US Population Reference Values for Health-Related Quality of Life Questionnaires Based on Demographics of Patients with Prostate Cancer. Adv Ther. 2022 Aug;39(8):3696-3710. doi: 10.1007/s12325-022-02204-3. Epub 2022 Jun 22.
- Armstrong AJ, Azad AA, Iguchi T, Szmulewitz RZ, Petrylak DP, Holzbeierlein J, Villers A, Alcaraz A, Alekseev B, Shore ND, Gomez-Veiga F, Rosbrook B, Zohren F, Yamada S, Haas GP, Stenzl A. Improved Survival With Enzalutamide in Patients With Metastatic Hormone-Sensitive Prostate Cancer. J Clin Oncol. 2022 May 20;40(15):1616-1622. doi: 10.1200/JCO.22.00193. Epub 2022 Apr 14.
- Stenzl A, Dunshee C, De Giorgi U, Alekseev B, Iguchi T, Szmulewitz RZ, Flaig TW, Tombal B, Morlock R, Ivanescu C, Ramaswamy K, Saad F, Armstrong AJ. Effect of Enzalutamide plus Androgen Deprivation Therapy on Health-related Quality of Life in Patients with Metastatic Hormone-sensitive Prostate Cancer: An Analysis of the ARCHES Randomised, Placebo-controlled, Phase 3 Study. Eur Urol. 2020 Oct;78(4):603-614. doi: 10.1016/j.eururo.2020.03.019. Epub 2020 Apr 23.
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Enzalutamide | Other / unclassified | 160 mg | Oral |