Biopharmaceutical company Receptos, Inc. has enrolled the first participant with relapsing multiple sclerosis (RMS) in its SUNBEAM phase 3 trial, which will evaluate the potential therapy RPC1063 in patients who have the multiple sclerosis. The company’s phase 3 RADIANCE trial, also involving RMS patients, had already been initiated, which means that Receptos may be able to finish its clinical development program for multiple sclerosis by 2017, according to the company’s press release.
RPC1063 is a novel, oral, once daily, selective sphingosine 1-phosphate 1 and 5 receptor modulator being developed by Receptos for the treatment of autoimmune indications such as RMS, but also ulcerative colitis (UC) as well. “Our initiation of the SUNBEAM trial represents another major corporate milestone for Receptos, and positions RPC1063 as the potential next-to-market oral agent for the treatment of relapsing multiple sclerosis,” said the president and chief executive officer of Receptos, Faheem Hasnain.
Both the SUNBEAM and RADIANCE trials are randomised, double-blind studies that will include 1,200 RMS patients, and are designed to compare 0.5 mg and 1.0 mg doses of RPC1063 with interferon beta-1a (Avonex). In addition, the trials aim to evaluate RPC1063’s superiority in comparison with Avonex regarding the decrease of the annualised relapse rate following either one or two years of therapy. Both of the phase 3 trials are taking place under Special Protocol Assessment (SPA) agreement with the U.S. Food and Drug Administration (FDA).
The RPC1063 therapy had already been demonstrated to be promising for treatment of MS, as it met the primary endpoint of reduction in MRI brain lesion activity and secondary endpoints measuring effects of other MRI parameters in its phase 2 trials, which were announced last summer. In addition, researchers were also able to trace a consistent safety profile. Receptos presented the findings at the largest meeting dedicated to MS to date, the joint meeting of the Americas Committee for Treatment and Research In Multiple Sclerosis (ACTRIMS) and the European Committee for Treatment and Research In Multiple Sclerosis (ECTRIMS).
“Following our recent positive Phase 2 results in ulcerative colitis, we also plan to initiate a Phase 3 program for RPC1063 in inflammatory bowel disease in 2015. We believe that this drug candidate represents a potential franchise in immunology, and we continue to explore opportunities in other therapeutic indications where there is strong scientific rationale,” added the president and CEO of Receptos.
After having announced that they were looking for RMS patients for the SUNBEAM and RADIANCE trials at the end of last year, the company is also going to assess the RPC1063 therapy in inflammatory bowel disease (IBD) patients in its TOUCHSTONE phase 3 trial, which includes patients who suffer from UC, and a phase 2 trial in patients with Crohn’s disease. Both of the trials are scheduled to begin this year, and are based on the encouraging results obtained by the company in its prior studies of the medication with IBD.
Source: Multiple Sclerosis News Today © BioNews-tx.com 2015 (21/01/15)
Receptos, Inc. announced that the Phase 2 portion of the RADIANCE trial of its selective S1P1 receptor modulator, RPC1063, in relapsing multiple sclerosis (RMS) met the primary endpoint, reduction in MRI brain lesion activity. The overall safety profile of RPC1063 was consistent with the results of prior trials, and continues to support the differentiation of the drug candidate against other oral agents for treatment of RMS on the market or in clinical development.
The randomized, double-blind study assessed the efficacy, safety and tolerability of two orally administered doses (0.5 mg and 1.0 mg) of RPC1063 against placebo in 258 patients with RMS across 77 sites in 13 countries. The primary endpoint of the trial was the reduction in the cumulative number of total gadolinium-enhancing (GdE) lesions determined by MRI from week 12 to week 24 of study treatment, a standard endpoint for Phase 2 trials in this indication. Patients on RPC1063 experienced a statistically significant reduction in GdE lesions of 86% at both 0.5 mg and 1.0 mg compared to patients on placebo (p-values <0.0001 for each dose group compared to placebo). Secondary endpoints measuring effects on other MRI parameters were also positive and statistically significant (p<0.0001 for each dose group compared to placebo). Although this Phase 2 portion of the trial was not powered to detect a statistically significant difference between RPC1063 treatment arms and placebo on annualized relapse rate (ARR), there was a favourable trend for both RPC1063 dose groups. The detailed results of the Phase 2 portion of the RADIANCE trial are expected to be presented at a major scientific meeting in coming months.
Safety and tolerability data from the trial provide support for a differentiated, potential best-in-class profile. The overall adverse event profile appeared relatively similar between the RPC1063 dose groups and placebo with no concerning safety signals for patients receiving RPC1063. First dose changes in heart rate in patients receiving RPC1063 were generally modest (maximum mean reduction).
"The results of this trial demonstrated a significant treatment effect of RPC1063 at both doses, consistent with other molecules in the class," said Jeffrey Cohen, M.D., Principal Investigator of the RADIANCE trial and director of the Cleveland Clinic's Mellen Center for Multiple Sclerosis Treatment and Research. "The results also showed a favourable overall safety profile, particularly in the critical areas of cardiovascular and hepatic side effects. The ongoing Phase 3 trial has been designed to confirm and extend these results."
Receptos initiated the Phase 3 portion of the RADIANCE trial under a Special Protocol Assessment (SPA) with the FDA in December 2013. The Phase 3 portion of the trial, which is currently enrolling patients, is a randomized, double-blind study designed to compare 0.5 mg and 1.0 mg of RPC1063 against interferon beta-1a (Avonex®) in 1,200 patients with RMS.
"The positive results of the Phase 2 portion of RADIANCE exceeded our expectations with respect to the differentiation thesis for RPC1063," said Faheem Hasnain, President and Chief Executive Officer of Receptos. "Based on our analysis of the Phase 2 dataset, we believe that RPC1063 has the opportunity to be the best-in-class S1P receptor modulator. Our Phase 3 program is now well underway, positioning the program as the most advanced S1P receptor modulator in development for relapsing multiple sclerosis. In addition, we believe that RPC1063 may have promise in other therapeutic areas, and we continue to look forward to the results of TOUCHSTONE, our Phase 2 trial of RPC1063 in ulcerative colitis, in the fourth quarter of 2014."
Source: MarketWatch Copyright © 2014 MarketWatch, Inc (10/06/14)