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TSRI-Invented Compound Ozanimod Shows Positive Results in Late-Stage Clinical Trial for Relapsing Multiple Sclerosis

February 21, 2017 – Results from a new Phase 3 study conducted by the Celgene Corporation demonstrate that ozanimod, a drug candidate originally discovered and optimized at The Scripps Research Institute (TSRI), can reduce the frequency of multiple sclerosis relapse.

Relapsing multiple sclerosis is a form of the disease where patients experience a periodic worsening of symptoms. Sensory and motor loss of function leads to increased disability, and patients can need a cane or wheelchair. A signature of the disease is the appearance of lesions in the brain, which are linked to inflammation and can show up through MRI detection during active periods of multiple sclerosis relapse.

Ozanimod, discovered by TSRI Professors Hugh Rosen and Ed Roberts and their laboratories, acts as a sphingosine 1-phosphate 1 (S1PR1) receptor agonist—modulating S1PR1 signaling and blocking sources of inflammation. Rosen and Roberts went on to co-found Receptos, a clinical stage biopharmaceutical company that took ozanimod into Phase 1, 2 and 3 clinical trials and was then acquired by Celgene. Ozanimod is the first New Chemical Entity discovered from a starting point in the NIH Common Fund Molecular Libraries Initiative to reach and succeed in advanced clinical studies.

As reported by Celgene, results from the randomized, Phase 3, double-blind, double-dummy, active-controlled SUNBEAM study among 1,346 participants show that ozanimod met its primary endpoint in reducing annualized relapse rate (ARR) of relapsing multiple sclerosis, compared with an alternate drug treatment called weekly interferon (IFN) β-1a (Avonex®).

Administered at doses of both 1 mg and 0.5 mg, ozanimod demonstrated statistically significant and clinically meaningful improvements, compared to Avonex®, for the primary endpoint of ARR and the measured secondary endpoints of the number of MRI-detected lesions and the number of new or enlarging “T2” MRI lesions at after a year of treatment.

“It is exciting and rewarding to see the results of this new Phase 3 trial, which confirm the safety profile from the two-year extension data from the Phase 2 RADIANCE study and underscore ozanimod’s efficacy in reducing the burden of MS symptoms on patients and their families,” said Rosen. “We look forward to seeing the full study results, as well as the results from the Phase 3 study evaluating ozanimod in patients with ulcerative colitis.”

Scientists involved in the trial plan to present the full Phase 3 trial results at an upcoming international scientific meeting.

About The Scripps Research Institute

The Scripps Research Institute (TSRI) is one of the world's largest independent, not-for-profit organizations focusing on research in the biomedical sciences. TSRI is internationally recognized for its contributions to science and health, including its role in laying the foundation for new treatments for cancer, rheumatoid arthritis, hemophilia, and other diseases. An institution that evolved from the Scripps Metabolic Clinic founded by philanthropist Ellen Browning Scripps in 1924, the institute now employs more than 2,500 people on its campuses in La Jolla, CA, and Jupiter, FL, where its renowned scientists—including two Nobel laureates and 20 members of the National Academies of Science, Engineering or Medicine—work toward their next discoveries. The institute's graduate program, which awards PhD degrees in biology and chemistry, ranks among the top ten of its kind in the nation. In October 2016, TSRI announced a strategic affiliation with the California Institute for Biomedical Research (Calibr), representing a renewed commitment to the discovery and development of new medicines to address unmet medical needs. For more information, see www.scripps.edu.

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TSRI Professor Hugh Rosen (Photo by Biomedical Graphics.) (High-res image)

TSRI Professor Edward Roberts (Photo by Biomedical Graphics.) (High-res image)


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