FDA Extends PDUFA Date For Telotristat Etiprate For The Treatment Of Carcinoid Syndrome

THE WOODLANDS, Texas, Sept. 14, 2016 /PRNewswire/ -- Lexicon Pharmaceuticals, Inc. (Nasdaq: LXRX) today announced that the U.S. Food and Drug Administration ("FDA") will require additional time to complete its review of the New Drug Application ("NDA") for telotristat etiprate, an oral drug for the treatment of carcinoid syndrome.  In a notice received from the FDA, the Prescription Drug User Fee Act ("PDUFA") date for its Priority Review of telotristat etiprate has been extended by three months, from November 30, 2016 to February 28, 2017.  In response to an information request from the FDA, additional clinical data analyses have been submitted and the extension will provide the FDA time for a full review of the submission.  

"We look forward to continuing to work closely with the FDA throughout the remainder of the regulatory review of telotristat etiprate," said Lexicon President and Chief Executive Officer, Lonnel Coats.  "We appreciate the efforts of the FDA to conduct a complete review of all of the data supporting our NDA and we are committed to bringing this potential new therapy to patients suffering from carcinoid syndrome."

Carcinoid syndrome is a rare disease affecting thousands of cancer patients with metastatic neuroendocrine tumors (mNETs) that have spread to the liver and other organs from the gastrointestinal tract.  The condition is characterized by frequent and debilitating diarrhea that often prevents patients from leading active, predictable lives, as well as facial flushing, abdominal pain, fatigue and, over time, heart valve damage.

About Telotristat Etiprate

Discovered using Lexicon's unique approach to gene science, telotristat etiprate is the first investigational drug in clinical studies to target tryptophan hydroxylase, an enzyme that triggers the excess serotonin production within mNET cells that leads to carcinoid syndrome. While existing treatments for carcinoid syndrome work to reduce the release of serotonin outside tumor cells, telotristat etiprate works at the source to reduce serotonin production within the tumor cells. By specifically inhibiting serotonin production, telotristat etiprate seeks to control this important driver of carcinoid syndrome and, in turn, provide patients with more control over their disease.

Telotristat etiprate has received Fast Track and Orphan Drug designation from the U.S. Food and Drug Administration and has been granted priority review by the FDA with a Prescription Drug User Fee Act (PDUFA) target action date of February 28, 2017.

Lexicon retains rights to market telotristat etiprate in the U.S. and Japan, and is building the in-house commercial infrastructure to serve the U.S. market. Lexicon has a license and collaboration agreement with Ipsen to commercialize telotristat etiprate in Europe and other countries outside the U.S. and Japan.

About Lexicon

Lexicon is a fully integrated biopharmaceutical company that is applying a unique approach to gene science based on Nobel Prize-winning technology to discover and develop precise medicines for patients with serious, chronic conditions. Through its Genome5000™ program, Lexicon scientists have studied the role and function of nearly 5,000 genes over the last 20 years and have identified more than 100 protein targets with significant therapeutic potential in a range of diseases. Through the precise targeting of these proteins, Lexicon is pioneering the discovery and development of innovative medicines to safely and effectively treat disease. Lexicon has a pipeline of promising drug candidates in clinical and pre-clinical development in oncology, diabetes and metabolism. For additional information please visit www.lexpharma.com.

Safe Harbor Statement

This press release contains "forward-looking statements," including statements relating to Lexicon's and its licensees' clinical development of and regulatory filings for telotristat etiprate (LX1032) and the results and projected timing of clinical trials and the potential therapeutic and commercial potential of telotristat etiprate. In addition, this press release also contains forward-looking statements relating to Lexicon's growth and future operating results, discovery and development of products, strategic alliances and intellectual property, as well as other matters that are not historical facts or information. All forward-looking statements are based on management's current assumptions and expectations and involve risks, uncertainties and other important factors, specifically including the risk that clinical studies of telotristat etiprate may be halted, delayed or otherwise not demonstrate safety or efficacy, the risk that the FDA and other regulatory authorities may not grant regulatory approval of telotristat etiprate in accordance with Lexicon's currently anticipated timelines or at all, and the risk that such regulatory approvals, if granted, may have significant limitations on the approved use of telotristat etiprate. As a result, telotristat etiprate may never be successfully commercialized. Other risks include Lexicon's ability to meet its capital requirements, successfully conduct preclinical and clinical development and obtain necessary regulatory approvals of its other potential drug candidates, achieve its operational objectives, obtain patent protection for its discoveries and establish strategic alliances, as well as additional factors relating to manufacturing, intellectual property rights, and the therapeutic or commercial value of its drug candidates. Any of these risks, uncertainties and other factors may cause Lexicon's actual results to be materially different from any future results expressed or implied by such forward-looking statements. Information identifying such important factors is contained under "Risk Factors" in Lexicon's annual report on Form 10-K for the year ended December 31, 2015, as filed with the Securities and Exchange Commission. Lexicon undertakes no obligation to update or revise any such forward-looking statements, whether as a result of new information, future events or otherwise.

SOURCE Lexicon Pharmaceuticals, Inc.

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