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Flex Pharma Initiates CMT Phase 2 Trial with FLX-787 in US

SLRX | October 16, 2017

Flex Pharma Initiates CMT Phase 2 Trial with FLX-787 in US

-- ALS Phase 2 Trial Currently Underway --

Flex Pharma, Inc. (NASDAQ: FLKS), a clinical-stage biotechnology company that is developing innovative and proprietary treatments for cramps and spasticity associated with severe neurological diseases such as amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS) and peripheral neuropathies such as Charcot-Marie-Tooth (CMT), today announced that, under its open investigational new drug (IND) application, the Company has initiated a Phase 2 randomized, controlled, double-blinded, parallel design trial in the US, referred to as the COMMIT trial. The COMMIT trial will evaluate FLX-787, the Company’s co-activator of TRPA1 and TRPV1, in patients with Charcot-Marie-Tooth, who suffer from painful, debilitating cramps. The Company expects to report topline results from this study in the middle of 2018. The Company initiated a Phase 2 clinical trial in ALS earlier this quarter. The FDA has granted FLX-787 Fast Track designation for the treatment of severe muscle cramps associated with ALS.

“Many of our patients with CMT neuropathy suffer from frequent and severe muscle cramping which can limit their activities of daily living and have a profound impact on their quality of life,” stated CMT clinical trial lead investigator, Dr. Nicholas Johnson, Assistant Professor of Neurology, Pediatrics and Pathology at the University of Utah. “FLX-787 promises to have significant clinical advantages because of its safety profile and the lack of systemic exposure.”

“As one of the very few companies conducting interventional studies in CMT, we are excited to be at the forefront of clinical development for this disease, an orphan indication that is the most common form of inherited neuromuscular disease,” commented Dr. William McVicar, Flex Pharma President and CEO. “These new Phase 2 IND studies, as well as completion of the ongoing exploratory Phase 2 work in Australia, are expected to result in several important data readouts in 2018.”

About the COMMIT Clinical Trial

The COMMIT trial is a Phase 2 clinical trial designed to evaluate FLX-787 in patients with Charcot-Marie-Tooth who suffer from cramps. This randomized, controlled, double-blinded, parallel design trial in the US will include a run-in period to establish a baseline in cramp frequency. Patients will then be randomized to 30 mg of FLX-787 administered three times a day, or control, for 28 days. Patients will be evaluated for changes in cramp frequency as the primary endpoint, with a number of secondary endpoints.

About Flex Pharma

Flex Pharma, Inc. is a clinical-stage biotechnology company that is developing innovative and proprietary treatments for cramps and spasticity associated with the severe neurological diseases of ALS, MS and peripheral neuropathies such as Charcot-Marie-Tooth (CMT). The Company’s lead candidate, FLX-787, is being developed under Fast Track designation for the treatment of severe muscle cramps associated with ALS. Flex Pharma was founded by National Academy of Science members Rod MacKinnon, M.D. (2003 Nobel Laureate), and Bruce Bean, Ph.D., recognized leaders in the fields of ion channels and neurobiology, along with Chair Christoph Westphal, M.D., Ph.D.

Forward-Looking Statements

This press release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things, the design and timing of ongoing and anticipated clinical trials, including the timing for results of our clinical trials. These forward-looking statements are based on management's expectations and assumptions as of the date of this press release and are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those expressed or implied by such statements. These risks and uncertainties include, without limitation: the status, timing, costs, results and interpretation of our clinical studies; the uncertainties inherent in conducting clinical studies; our ability to enroll patients in each of clinical studies on a timely basis; expectations of our ability to make regulatory filings and obtain and maintain regulatory approvals; availability of funding sufficient for our foreseeable and unforeseeable operating expenses and capital expenditure requirements; the inherent uncertainties associated with intellectual property; and other factors discussed in greater detail under the heading "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2016 and subsequent filings with the Securities and Exchange Commission (SEC). You are encouraged to read our filings with the SEC, available at www.sec.gov, for a discussion of these and other risks and uncertainties. Any forward-looking statements that we make in this press release speak only as of the date of this press release. We assume no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release.