Neoadjuvant Apalutamide (ARN509) and Radical Prostatectomy in Treatment of Intermediate to High Risk Prostate Cancer

Summary

This is an investigator-initiated phase II single arm trial, combining neoadjuvant apalutamide (ARN509) with radical prostatectomy, in the treatment of D'Amico intermediate to high risk organ-confined prostate cancer. Apalutamide has shown efficacy in castrate resistant prostate cancer in phase II studies and are now in phase III trials combined with radiation in organ confined disease. The primary study objectives include assessment of (i) oncological efficacy as determined by tumour downstaging and achievement of nadir PSA The secondary study objectives include(i) determination of adverse effects related to apalutamide and surgical complication rates (ii) human prostate tissue effect of apalutamide The study will recruit thirty eligible participants who will receive 12 weeks of oral apalutamide 240mg daily. This will be followed by standard-of-care radical prostatectomy. The total trial duration is 26 weeks.

Timeline

Start

2017-06-20

Primary completion

2019-08-22

Completion

2019-08-22

Outcome

Missed primary endpoint

paper A 12-week course of neoadjuvant apalutamide prior to RP did not meet the primary endpoint of pCR in this trial. PMID 35091711 ↗

Publications

• Yang X, Allen JC, Aslim EJ, Tay KJ, Yuen SPJ, Kanesvaran R, Chua MLK, Chong TW, Ho SSH, Lee LS. Patient-reported outcomes of a phase II neoadjuvant apalutamide (ARN-509) and radical prostatectomy in treatment of intermediate- to high-risk prostate cancer (NEAR) trial. Int J Urol. 2022 Nov;29(11):1322-1330. doi: 10.1111/iju.14994. Epub 2022 Aug 24.
• Lee LS, Sim AYL, Ong CW, Yang X, Ng CCY, Liu W, Rajasegaran V, Lim AMS, Aslim EJ, Ngo NT, Khor LY, Kanesvaran R, Allen JCJ, Tay KJ, Yuen JSP, Chong TW, Ho SSH, Teh BT, Chua MLK. NEAR trial: A single-arm phase II trial of neoadjuvant apalutamide monotherapy and radical prostatectomy in intermediate- and high-risk prostate cancer. Prostate Cancer Prostatic Dis. 2022 Apr;25(4):741-748. doi: 10.1038/s41391-022-00496-8. Epub 2022 Jan 28.

Drugs

Indications