Orion's and Bayer's darolutamide shows substantial efficacy and a favourable safety profile in the treatment of prostate cancer in the ARAMIS trial - Seite 3

Bayer plans to discuss the data from the ARAMIS trial with health authorities regarding the submission of new drug applications. Bayer has been granted Fast Track designation by the U.S. Food and Drug Administration (FDA) for darolutamide in men with nmCRPC. Darolutamide is being developed jointly by Bayer and Orion Corporation.

Detailed study results


The MFS benefit observed with darolutamide was consistent across all subgroups of patients. In an interim analysis of OS, darolutamide showed a positive trend, with a 29 percent reduction in the risk of death (HR=0.71, 95% CI 0.50-0.99; P=0.045, median not reached).

In addition, darolutamide plus ADT demonstrated a significant benefit over placebo plus ADT for time to pain progression (40.3 months compared to 25.4 months; HR=0.65, 95% CI 0.53-0.79; P<0.001) and time to cytotoxic chemotherapy (median not reached compared to 38.2; HR=0.43, 95% CI 0.31-0.60; P<0.001). Another secondary endpoint, time to first symptomatic skeletal event (SSE), also demonstrated a benefit in favor of darolutamide (median not reached). Darolutamide extended progression-free survival (PFS) (36.8 months compared to 14.8 months; HR=0.38, 95% CI 0.32-0.45; P<0.001), with a 62 percent risk reduction of local progression, distant metastases or death.

Incidence of treatment-emergent AEs was similar between darolutamide and placebo; most AEs were grade 1 and 2 (55 percent with darolutamide plus ADT and 54 percent with placebo plus ADT). Compared to placebo plus ADT, darolutamide plus ADT did not increase rates of critical AEs including, but not limited to, seizures, falls, fractures, rash, cognitive disorder, mental impairment or hypertension. Patients with a history of seizure were not excluded from the study.

The results of Patient Reported Outcomes (PRO)-based endpoints (based on the Functional Assessment of Cancer Therapy-Prostate; FACT-P, European Organisation for Research and Treatment of Cancer quality of life; EORTC-QLQ-PR25, and EQ-5D-3L questionnaires) demonstrated maintenance of health-related quality of life (HRQoL) with a positive trend favoring darolutamide over placebo.

About the ARAMIS trial design 
 
The ARAMIS trial is a randomized, Phase III, multi-center, double-blind, placebo-controlled trial evaluating the safety and efficacy of oral darolutamide in patients with nmCRPC who are currently being treated with ADT as standard of care and are at high risk for developing metastatic disease. 1,509 patients were randomized in a 2:1 ratio to receive 600 mg of darolutamide twice a day or placebo along with ADT.