PHARNEXT Collaborates with OrphanDev in Europe for Its Phase 3 Clinical Trial PLEO-CMT in CHarcot-Marie Tooth Type 1A Disease (CMT 1A)
Pharnext SAS today announced its collaboration with OrphanDev, a dedicated platform offering support in regulatory, methodology and logistics for rare diseases. OrphanDev’s main mission is to accelerate the development of orphan drugs. This collaboration is related to the International pivotal Phase 3 trial of Pharnext’s investigational Pleodrug, PXT-3003, for the treatment of CMT 1A.
PLEO-CMT aims at recruiting 300 patients in 27 centers both in Europe and the United States. For the European part of the trial (18 centers spread over Germany, Belgium, Spain, France, the UK and the Netherlands), OrphanDev will play a critical role in the dissemination and availability of practical and logistical information related to the trial, notably via its website: www.orphan-dev.org.
Pharnext and OrphanDev had already collaborated on 3 studies related to CMT 1A: PXT-3003 Phase2 study, a meta-analysis and a prospective study (biomarkers).
PXT-3003 is a novel oral fixed-low dose combination of (RS)-baclofen, naltrexone hydrochloride and D-sorbitol which has been developed via Pharnext Pleotherapy R&D platform.
PLEO-CMT is an International pivotal, multi-center, randomized, double blind, placebo-controlled, three-arm Phase 3 study which will enroll patients
aged 16 to 65 with mild to moderate CMT1A. Over 15 months, Pharnext will compare in parallel groups the efficacy and safety of two orally administered dosage variations of PXT-3003 versus placebo. Efficacy will be assessed through one primary endpoint: change in the ONLS score at 12 and 15 months of treatment to measure improvement of patients’ disability with PXT-3003. Additional secondary outcome measures will be assessed including functional and electrophysiological endpoints. A nine month follow-up study is planned thereafter, where all patients who will have completed the first 15 months and agreed, will receive a dose of the active product (patients who received placebo will be treated randomly with PXT-3003 dose 1 or 2).
About CMT 1A
Charcot-Marie-Tooth (CMT) disease encompasses a heterogeneous group of inherited, progressive, chronic peripheral neuropathies. CMT type 1A (CMT 1A), the most common type of CMT, is an orphan disease affecting at least 125,000 people in Europe and the U.S. The genetic mutation responsible for CMT 1A is a duplication of the PMP 22 gene coding for a peripheral myelin protein. Overexpression of this gene causes degradation of the neuronal sheath (myelin) responsible for nerve dysfunction, followed by loss of nerve conduction. As a result of peripheral nerve degradation, patients suffer from progressive muscle atrophy of legs and arms causing walking, running, balance problems and abnormal hand functioning. CMT 1A patients end up in wheelchairs in at least 5% of cases. They might also suffer from mild to moderate sensitive disorders. First symptoms usually appear during adolescence and will progressively evolve through patients’ life.
To date, no curative or symptomatic medications have been approved and treatment consists of supportive care such as orthotics, leg braces, physical and occupational therapy or surgery.
OrphanDev is an academic platform at the heart of rare diseases, close to research teams, clinicians, industry professionals and patient organizations. It offers its scientific, regulatory and methodological expertise in the development of drugs for rare diseases. OrphanDev assists its partners, particularly for Orphan Drug Designation applications, the recruitment of patients for clinical trials, and European projects. OrphanDev is a public platform linked to the University of Aix Marseille (France) and the Timone Institute of Neurosciences based in Marseille. OrphanDev is a component of the F-CRIN infrastructure (French Clinical Research Network) which had mission to reinforce the visibility and the competitiveness of French clinical research.
For further information, visit http://orphan-dev.org
Pharnext is an advanced clinical stage biopharmaceutical company developing novel therapeutics that simultaneously target multiple key disease pathways for severe orphan and common neurological disorders. The proprietary research and development platform of Pharnext, based on network pharmacology, is applicable to a broad spectrum of diseases and allows the rapid development of “pleodrugs”, synergistic combinations of repositioned drugs with established safety profiles. The company’s two lead pleodrugs are PXT-3003 for the treatment of orphan disease Charcot Marie Tooth type 1A (Phase 3 clinical trial initiated) and PXT-864 for Alzheimer’s disease (Phase 2 clinical trial ongoing) and other neurologic indications (including Parkinson’s disease and amyotrophic lateral sclerosis).
For further information, visit www.pharnext.com
Daniel Cohen, M.D., Ph.D.
Chairman and Chief Executive Officer
Florence Portejoie and Caroline Carmagnol
Tél : 01 44 54 36 64
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