Reata Pharmaceuticals, Inc. Presents Interim Phase 1b Data for Omaveloxolone in the Treatment of Unresectable or Metastatic Melanoma

IRVING, Texas, Dec. 11, 2017 (GLOBE NEWSWIRE) — Reata Pharmaceuticals, Inc. (Nasdaq:RETA) (“Reata” or “the Company”), a clinical-stage biopharmaceutical company, today announced the presentation of interim data from the ongoing Phase 1b portion of the REVEAL study of omaveloxolone in combination with approved checkpoint inhibitor (CI) therapies, ipilimumab or nivolumab, for the treatment of Stage III or IV unresectable or metastatic melanoma. The data were presented in an oral presentation at the European Society for Medical Oncology (ESMO) Immuno Oncology Congress 2017 in Geneva, Switzerland by lead author Dr. Sapna Patel, Assistant Professor, Department of Melanoma Medical Oncology, University of Texas MD Anderson Cancer Center.

All enrolled patients were required to have biopsy positive inducible nitric oxide synthase (iNOS), which is an independent predictor of poor survival in melanoma patients.  Emerging translational data suggest that iNOS is a key mediator of myeloid-derived suppressor cells (MDSCs), whose presence has been shown to correlate with reduced activity of CIs.  Of the 30 patients enrolled in REVEAL with evaluable tumor restaging, 7/30 (23%) of patients were checkpoint inhibitor-naïve, while 23/30 (77%) of patients were refractory to prior checkpoint inhibitor therapy. The overall response rate (confirmed + unconfirmed) observed in all evaluable patients was 8/30 (27%, 6 partial responses (PR) and 2 complete responses (CR)). 

In CI-naïve patients, 4/7 (57%) had objective responses including 1 CR.  3/18 (17%) patients treated with omaveloxolone + nivolumab who were refractory to prior checkpoint inhibitor therapies had objective responses, including 1 CR.  The majority of responses have been durable and are ongoing.  Omaveloxolone treatment was associated with decreases in tumor iNOS, programmed death ligand 1 (PD-L1), and indoleamine 2,3-dioxygenase (IDO-1) expression. No serious AEs considered related to omaveloxolone have been reported to date.  Commonly reported treatment-related adverse events included fatigue, nausea, pruritus, transaminase increases, and decreased appetite.

“The ongoing REVEAL trial data suggests that omaveloxolone may have activity in patients who are refractory to checkpoint inhibitors, which is an emerging and large unmet need,” said Colin Meyer, M.D., Chief Medical Officer of Reata.  “We are continuing with the dose escalation phase of the study to identify the optimal dose, and upon completion, we will determine the next steps in the clinical development program for omaveloxolone in melanoma.”

About Reata Pharmaceuticals, Inc.

Reata is a clinical-stage biopharmaceutical company that develops novel therapeutics for patients with serious or life-threatening diseases by targeting molecular pathways involved in the regulation of cellular metabolism and inflammation.  Reata’s two most advanced clinical candidates, bardoxolone methyl and omaveloxolone, target the important transcription factor Nrf2 that promotes the resolution of inflammation by restoring mitochondrial function, reducing oxidative stress, and inhibiting pro-inflammatory signaling.

Forward-Looking Statements

This press release includes certain disclosures that contain “forward-looking statements,” including, without limitation, statements regarding the success, cost and timing of our product development activities and clinical trials, our plans to research, develop and commercialize our product candidates, and our ability to obtain and retain regulatory approval of our product candidates.  You can identify forward-looking statements because they contain words such as “believes,” “will,” “may,” “aims,” “plans,” and “expects.”  Forward-looking statements are based on Reata’s current expectations and assumptions.  Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks, and changes in circumstances that may differ materially from those contemplated by the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance.  Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to, (i) the timing, costs, conduct, and outcome of our clinical trials and future preclinical studies and clinical trials, including the timing of the initiation and availability of data from such trials; (ii) the timing and likelihood of regulatory filings and approvals for our product candidates; (iii) the potential market size and the size of the patient populations for our product candidates, if approved for commercial use, and the market opportunities for our product candidates; and (iv) other factors set forth in Reata’s filings with the U.S. Securities and Exchange Commission, including its Annual Report on Form 10-K, under the caption “Risk Factors.”  The forward-looking statements speak only as of the date made and, other than as required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

Contact:
Reata Pharmaceuticals, Inc.
(972) 865-2219
info@reatapharma.com
http://news.reatapharma.com

Investor Relations:
Vinny Jindal
Vice President, Strategy
(469) 374-8721
ir@reatapharma.com

Media:
Matt Middleman, M.D.
LifeSci Public Relations
(646) 627-8384
matt.middleman@lifescipublicrelations.com

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