Synergy Pharmaceuticals Announces FDA Approval of TRULANCE® (Plecanatide) for the Treatment of Irritable Bowel Syndrome with Constipation (IBS-C) in Adults

NEW YORK, NY, USA I January 25, 2018 I Synergy Pharmaceuticals Inc. (NASDAQ:SGYP) announced today that the U.S. Food and Drug Administration (FDA) has approved TRULANCE® (plecanatide) 3 mg tablet for the once-daily treatment of irritable bowel syndrome with constipation (IBS-C) in adults. This is the second indication for TRULANCE, which is already approved for the treatment of adults with chronic idiopathic constipation (CIC).

“The IBS-C approval is a pivotal milestone for Synergy, representing the second approved indication for TRULANCE in the past 12 months,” said Troy Hamilton, Pharm.D., CEO of Synergy Pharmaceuticals Inc. “This approval demonstrates our unwavering commitment to provide a safe and effective treatment option for those patients living with these chronic GI disorders.”

TRULANCE is the only prescription medication for adults with CIC and now IBS-C that can be taken once-daily, with or without food, at any time of the day. TRULANCE is packaged in a unique, 30-day calendar blister pack.

“Approximately 1 in 20 Americans are living with IBS-C, many of whom are not satisfied with currently available treatment options,” said William D. Chey, M.D., Professor of Medicine, Director of the GI Physiology Laboratory, and Co-Director of the Michigan Bowel Control Program at the University of Michigan. “With this second indication for TRULANCE, patients and physicians will have a much-needed, new treatment option with an established safety profile that can effectively address abdominal pain and constipation experienced by patients with IBS-C.”

“The TRULANCE label reflects the strong and remarkably consistent efficacy and safety profile TRULANCE has demonstrated in treating over 4,700 patients across both CIC and IBS-C clinical trials,” said Patrick H. Griffin, MD, Chief Medical Officer of Synergy. “To-date, real world patient experience has supported the clinical trial data, highlighted by a post-marketing diarrhea rate of less than 0.5% and no reports of severe diarrhea requiring hospitalization since the launch of the TRULANCE CIC indication. The IBS-C approval today builds on the already strong CIC label and further establishes TRULANCE as the first and only uroguanylin analog.”

With the exception of a single amino acid substitution for greater binding affinity, TRULANCE is structurally identical to human uroguanylin and is the only treatment thought to replicate the pH-sensitive activity of uroguanylin.

TRULANCE Phase 3 IBS-C Program

Design
The Phase 3 IBS-C program included two randomized, 12-week, double-blind, placebo-controlled trials evaluating the efficacy and safety of TRULANCE in adult patients with IBS-C. Across the two trials, more than 2,100 patients received a once-daily tablet of TRULANCE (3 mg or 6 mg doses) or placebo. Both trials included a two-week, pre-treatment baseline period, a 12-week treatment period, and a two-week, post-treatment follow-up period. Patients who were enrolled in these trials fulfilled Rome III IBS-C criteria related to abdominal pain and stool changes. The company only sought approval for the 3 mg dose.

Primary Endpoint
The primary endpoint for both trials was the percentage of patients who are Overall Responders during the 12-week treatment period. An Overall Responder, as defined by the FDA, was a patient who fulfilled both ≥ 30% reduction in worst abdominal pain and an increase of ≥ 1 complete spontaneous bowel movement (CSBM) from baseline, in the same week, for at least 50% of the 12 treatment weeks.

Results
In both Phase 3 IBS-C trials, TRULANCE met the primary endpoint as compared with placebo (Study 1: 30.2%; 17.8% in placebo; p<0.001. Study 2: 21.5%; 14.2% in placebo; p=0.009).

In both studies, patients who received TRULANCE experienced significantly reduced abdominal pain and improvements in stool frequency, stool consistency, and straining with bowel movements during the 12-week treatment period as compared to placebo.

In both studies, the most common adverse event was diarrhea (4.3%; 1.0% at placebo), with severe diarrhea reported in 1% of patients. Overall discontinuation rates were low among patients treated with TRULANCE and placebo (2.5%; 0.4% at placebo) and the most common adverse reaction leading to discontinuation was diarrhea (1.2%; 0% in placebo).

Indications and Usage
TRULANCE (plecanatide) 3 mg tablets is indicated in adults for the treatment of Chronic Idiopathic Constipation (CIC) and Irritable Bowel Syndrome with Constipation (IBS-C).

About Irritable Bowel Syndrome with Constipation (IBS-C)
Irritable bowel syndrome (IBS) is a chronic gastrointestinal disorder characterized by recurrent abdominal pain and associated with two or more of the following: related to defecation, associated with a change in the frequency of stool, or associated with a change in the form (appearance) of the stool. IBS can be subtyped by the predominant stool form: constipation (IBS-C), diarrhea (IBS-D) or mixed (IBS-M). Those within the IBS-C subtype experience hard or lumpy stools more than 25 percent of the time they defecate, and loose or watery stools less than 25 percent of the time. It is estimated that the prevalence of IBS-C in the U.S. adult population is approximately 4 to 5 percent.

About Chronic Idiopathic Constipation (CIC)
CIC affects approximately 14 percent of the global population, disproportionately affecting women and older adults. People with CIC have persistent symptoms of difficult-to-pass and infrequent bowel movements. In addition to physical symptoms including abdominal bloating and discomfort, CIC can adversely affect an individual’s quality of life, including increasing stress levels and anxiety.

About TRULANCE®
TRULANCE® (plecanatide) is a once-daily tablet approved for adults with CIC or IBS-C. With the exception of a single amino acid substitution for greater binding affinity, TRULANCE is structurally identical to uroguanylin, a naturally occurring and endogenous human GI peptide. Uroguanylin activates GC-C receptors in a pH-sensitive manner primarily in the small intestine, stimulating fluid secretion and maintaining stool consistency necessary for regular bowel function.

About Synergy Pharmaceuticals
Synergy is a biopharmaceutical company focused on the development and commercialization of novel gastrointestinal (GI) therapies. The company has pioneered discovery, research and development efforts around analogs of uroguanylin, a naturally occurring human GI peptide, for the treatment of GI diseases and disorders. Synergy’s proprietary GI platform includes one commercial product TRULANCE® (plecanatide) and a second product candidate - dolcanatide. For more information, please visit www.synergypharma.com.

SOURCE: Synergy Pharmaceuticals

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