XenoPort Awarded U.S. Patent Directed to Composition & Formulations of XP23829, a Novel Fumarate Analog for the Potential Tre...

Date : 04/04/2012 @ 8:30AM
Source : Business Wire
Stock : Xenoport, Inc. (XNPT)
Quote : 7.07  0.0 (0.00%) @ 2:05AM
Xenoport, Inc. share price Chart

XenoPort Awarded U.S. Patent Directed to Composition & Formulations of XP23829, a Novel Fumarate Analog for the Potential Tre...

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XenoPort, Inc. (Nasdaq: XNPT) announced today that it was awarded U.S. Patent 8,148,414 for “Prodrugs of Methyl Hydrogen Fumarate, Pharmaceutical Compositions Thereof, and Methods of Use.” The term of the patent extends until 2029, subject to potential Hatch-Waxman patent term extensions.

The patent is directed to the XP23829 compound, analogs thereof and formulations thereof. A related U.S. patent application directed to therapeutic uses of XP23829 is now pending.

XP23829 is a prodrug of methyl hydrogen fumarate, also known as monomethyl fumarate (MMF). In cell- and animal-based models, MMF has been shown to exhibit immuno-modulatory properties and inhibit damage from oxidative stress.

In XenoPort’s preclinical animal studies that compared molar equivalent doses of XP23829 to dimethyl fumarate (DMF), another prodrug of MMF, XP23829 demonstrated a greater degree of efficacy in animal models of both multiple sclerosis (MS) and psoriasis. Toxicology studies conducted in two species showed that XP23829 caused less stomach irritation compared to DMF.

XenoPort intends to file an Investigational New Drug Application (IND) for XP23829 for the treatment of relapsing remitting MS with the U.S. Food and Drug Administration (FDA) in the second quarter of 2012 and expects to initiate human clinical trials later this year.

XenoPort owns all rights to XP23829.

About XenoPort

XenoPort is a biopharmaceutical company focused on developing and commercializing a portfolio of internally discovered product candidates for the potential treatment of neurological disorders. Horizant® (gabapentin enacarbil) Extended-Release Tablets is XenoPort’s first FDA-approved product. GlaxoSmithKline holds commercialization rights and certain development rights for Horizant in the United States. Regnite® (gabapentin enacarbil) is approved for the treatment of moderate-to-severe primary restless legs syndrome in Japan. Astellas Pharma Inc. holds all development and commercialization rights for Regnite in Japan and five Asian countries. XenoPort holds all other world-wide rights and has co-promotion and certain development rights to gabapentin enacarbil in the United States. XenoPort’s pipeline of product candidates includes potential treatments for patients with postherpetic neuralgia, spasticity and Parkinson’s disease.

To learn more about XenoPort, please visit the company Website at www.XenoPort.com.

Forward-Looking Statements

This press release contains “forward-looking” statements, including, without limitation, all statements related to patent coverage for XP23829; potential future actions by the FDA related to the IND for XP23829 and the timing thereof; XenoPort’s future clinical development program for XP23829 and the timing thereof; the therapeutic and commercial potential of XP23829; and the suitability of XP23829 as a treatment for MS and/or psoriasis. Any statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements. Words such as “expects,” “intends,” “potential” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon XenoPort's current expectations. Forward-looking statements involve risks and uncertainties. XenoPort's actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, risks related to the uncertainty of the FDA IND clearance process and other regulatory requirements; the uncertain results and timing of clinical trials; XenoPort’s ability to successfully conduct clinical trials in the anticipated timeframes, or at all; XenoPort’s dependence on its current and additional collaborative partners; and the uncertain therapeutic and commercial value of XenoPort’s product candidates. These and other risk factors are discussed under the heading “Risk Factors” in XenoPort’s Annual Report on Form 10-K for the year ended December 31, 2011, filed with the Securities and Exchange Commission on February 29, 2012. XenoPort expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the company's expectations with regard thereto or any change in events, conditions or circumstances on which any such statements are based.

XENOPORT is a registered trademark of XenoPort, Inc.

Horizant is a registered trademark of GlaxoSmithKline.

Regnite is a registered trademark of Astellas Pharma Inc.


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