Release Details

SOUTH PLAINFIELD, N.J., March 19, 2015 /PRNewswire/ -- PTC Therapeutics, Inc. (Nasdaq: PTCT) today announced a collaboration with the Orphan Disease Center at the Perelman School of Medicine at the University of Pennsylvania focused on translational research for discovering and developing new treatments for orphan disorders. The partnership reflects both parties' commitment to developing treatments and improving the lives of those who suffer from rare diseases.

The first collaborative initiative will focus on Translarna™ (ataluren) for the lysosomal storage disease Mucopolysaccharidosis I (MPS I) due to a nonsense mutation. MPS I is an inherited lysosomal storage disorder caused by a deficiency of alpha-L-iduronidase, a lysosomal enzyme involved in the breakdown of complex carbohydrates known as glycosaminoglycans (GAGs). As a consequence of the disease, cells are unable to excrete carbohydrate residues that accumulate in the lysosomes. This cellular debris buildup disrupts the cell's normal function, resulting in clinical manifestations of the disease. There is an urgent need for the development of new treatments for MPS I as currently available therapeutics do not adequately address the bone, CNS or cardiac symptoms of the disease.

"We are excited to establish this partnership with PTC Therapeutics," said James M. Wilson, M.D., Ph.D., director of both the Orphan Disease Center and the Gene Therapy Program and professor of Pathology and Laboratory Medicine in Penn's Perelman School of Medicine. "PTC's leadership in the development of treatments for orphan diseases and expertise in RNA biology along with our expertise in gene therapy, makes this a powerful partnership for developing new therapies in orphan diseases."

"We are honored to be working with the Orphan Disease Center," stated Stuart Peltz, Ph.D., CEO of PTC Therapeutics, Inc. "The initial focus will be on Translarna in MPS I, emphasizing our commitment to develop Translarna as both a product and a pipeline. In addition, the collaboration will explore other potential targets to develop new treatments for patients suffering from orphan diseases. This alliance underscores our commitment to working with partners that are at the forefront of science and medicine to continue to develop innovative treatments for rare and neglected diseases."

PTC is initiating a multi-center, Phase 2, proof-of-concept study which will evaluate the safety and pharmacokinetics of Translarna in patients with nonsense mutation MPS I. Pharmacodynamic activity will also be explored by an assessment of GAG levels in cerebrospinal fluid, urine and blood. Initial data from this study is expected by the end of 2015.

About PTC Therapeutics, Inc.
PTC is a global biopharmaceutical company focused on the discovery, development and commercialization of orally administered, proprietary small molecule drugs targeting an area of RNA biology we refer to as post-transcriptional control. Post-transcriptional control processes are the regulatory events that occur in cells during and after a messenger RNA is copied from DNA through the transcription process. PTC has received conditional marketing authorization in the European Economic Area for Translarna for the treatment of nonsense mutation Duchenne muscular dystrophy in ambulatory patients aged five years and older. PTC's internally discovered pipeline addresses multiple therapeutic areas, including rare disorders, oncology and infectious diseases. PTC has discovered all of its compounds currently under development using its proprietary technologies. PTC plans to continue to develop these compounds both on its own and through selective collaboration arrangements with leading pharmaceutical and biotechnology companies. For more information on the company, please visit our website www.ptcbio.com.

For More Information:
Investors:
Emily Hill
+1 (908) 912-9327
ehill@ptcbio.com

Media:
Jane Baj
+1 (908) 912-9167
jbaj@ptcbio.com

Patients, Patients' Families, Investigators and Patient Organizations:
Diane Goetz
+1 (908) 912-9256 or (866) 282-5873
patientinfo@ptcbio.com

Forward Looking Statements:     

This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. All statements, other than those of historical fact, contained in this release are forward-looking statements, including statements regarding the future expectations, plans and prospects for PTC; the timing and conduct of PTC's clinical trials or studies of Translarna™ (ataluren) for the treatment of Duchenne muscular dystrophy (DMD), cystic fibrosis and MPS I, caused by nonsense mutations, including statements regarding the timing of initiation, enrollment and completion of the trials and the period during which the results of the trials will become available; the rate and degree of market acceptance and clinical utility of Translarna; PTC's strategy, future operations, future financial position, future revenues or projected costs; and objectives of management. Other forward-looking statements may be identified by the words "plan," "guidance," "anticipate," "believe," "estimate," "expect," "intend," "may," "predict," "project," "target," "potential," "will," "would," "could," "should," "continue," and similar expressions.

PTC's actual results, performance or achievements could differ materially from those expressed or implied by forward-looking statements it makes as a result of a variety of risks and uncertainties, including those related to the initiation, conduct and availability of data from clinical trials; expectations for regulatory approvals; PTC's scientific approach and general development progress; the eligible patient base and commercial potential of Translarna; PTC's ability to maintain the marketing authorization license of Translarna for the treatment of nonsense mutation DMD in the European Economic Area, which is conditioned upon completion of its Phase 3 confirmatory trial in nonsense mutation DMD and subject to annual review and renewal by the EMA following its reassessment of the risk-benefit balance of the authorization; and the factors discussed in the "Risk Factors" section of PTC's Annual Report on Form 10-K as well as any updates to these risk factors filed from time to time in PTC's other filings with the SEC. You are urged to carefully consider all such factors. The forward-looking statements contained herein represent PTC's views only as of the date of this press release and PTC does not undertake or plan to update or revise any such forward-looking statements to reflect actual results or changes in plans, prospects, assumptions, estimates or projections, or other circumstances occurring after the date of this release except as required by law.

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SOURCE PTC Therapeutics, Inc.