Gaucher Disease Clinical Trial
Official title:
A Multicenter, Open-label Extension Study of Velaglucerase Alfa Enzyme Replacement Therapy in Japanese Patients With Gaucher Disease
Gaucher disease is an inherited deficiency of the lysosomal enzyme glucocerebrosidase (GCB) that leads to progressive accumulation of glucocerebroside within macrophages and subsequent tissue and organ damage; typically of the liver, spleen, bone marrow, and brain. Type 1 Gaucher disease affects an estimated 30,000 persons worldwide and is the most common. Type 1 Gaucher disease does not involve the central nervous system. Patients with Type 2 Gaucher disease present with acute neurological deterioration, which leads to early death. Those with Type 3 disease typically display a more sub-acute neurological course, with later onset and slower progression. The primary objective of this study is to evaluate the long-term safety of every other week (EOW) dosing of velaglucerase alfa in Japanese patients with Gaucher disease who completed study HGT-GCB-087 and elected to continue treatment with velaglucerase alfa. Velaglucerase alfa has been developed and approved as an enzyme replacement therapy for Type 1 Gaucher disease.
Gaucher disease is an inherited deficiency of the lysosomal enzyme glucocerebrosidase (GCB) that leads to progressive accumulation of glucocerebroside within macrophages and subsequent tissue and organ damage; typically of the liver, spleen, bone marrow, and brain. Gaucher disease has been designated in the list of Specified Rare and Intractable Diseases by Specified Disease Treatment Research Program of Ministry of Health, Labor and Welfare (MHLW) as one of "lysosomal storage diseases" since 2001. Gaucher disease is also designated in the Medical Aid Program for Specified Categories of Chronic Pediatric Diseases. The prevalence of mutations and the phenotype of patients with Gaucher disease in Japan differs from that in non-Japanese populations. Some patients with type 1 Gaucher disease in Japan have more severe and progressive disease compared to non-Japanese patients and the disease is characterized by an earlier onset of symptoms. Velaglucerase alfa, a highly-purified form of the naturally occurring enzyme glucocerebrosidase, has been developed as an enzyme replacement therapy for Gaucher disease for the symptoms (anemia, thrombocytopenia, hepatomegaly, splenomegaly, and bone manifestation). The primary objective of this study is to evaluate the long-term safety of every other week (EOW) dosing of velaglucerase alfa in Japanese patients with Gaucher disease who completed study HGT-GCB-087 and elected to continue treatment with velaglucerase alfa. ;
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