NOVATO, Calif., Jan. 5 /PRNewswire-FirstCall/ -- BioMarin Pharmaceutical Inc. announced today that the European Commission has granted marketing approval for 3,4-diaminopyridine (amifampridine phosphate), for the rare autoimmune disease Lambert Eaton Myasthenic Syndrome (LEMS). Amifampridine phosphate, developed by the pharmaceutical unit (AGEPS) of the Paris Public Hospital Authority (AP-HP) and licensed from EUSA Pharma SAS, is the first approved treatment for LEMS, thereby conferring orphan drug protection and providing ten years of market exclusivity in Europe. It has also received orphan drug designation in the U.S.
About LEMS
Patients with LEMS typically present with fatigue, muscle pain and stiffness. The weakness is generally more marked in the proximal muscles particularly of the legs and trunk. Other problems include reduced reflexes, drooping of the eyelids, facial weakness and problems with swallowing. Patients often report a dry mouth, impotence, constipation and feelings of light headedness on standing. On occasion these problems can be life threatening when the weakness involves respiratory muscles. A diagnosis of LEMS is generally made on the basis of clinical symptoms, electromyographic testing and the presence of autoantibodies against voltage gated calcium channels.
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BioMarin Pharmaceutical Inc.
