GAUCHER DISEASE AGENTS
Gaucher Disease Agents
Gaucher disease is genetic, multisystem disease caused by an inherited deficiency in the lysosomal enzyme, β-glucocerebrosidase. The disease is named for the French physician who first described it (Philippe Gaucher: 1882). Clinical features include anemia, thrombocytopenia, enlargement of the liver and spleen and bone dysplasia. Some forms have neurologic involvement as well. Symptoms are caused by the accumulation of glucosylceramide in lysosomes of the reticuloendothelial system, predominantly in macrophages of bone, liver and spleen. Gaucher disease is categorized into three clinical forms. Type 1 or adult, non-neuropathic Gaucher disease is the most common form and typically presents with splenomegaly, anemia and thrombocytopenia in adolescence or adulthood. Type 2 or acute infantile neuropathic Gaucher disease presents in the perinatal period with enlargement of the liver and spleen, and progressive neurologic involvement and disability leading to death in the first years of life. Type 3 or childhood, chronic neuropathic Gaucher disease is intermediate in severity between types 1 and 2, and presents in childhood or early adulthood with neurologic and liver involvement which can be progressive. Gaucher disease affects an estimated 1 in 50,000 to 100,000 persons, over 90% being type 1. Therapies have been developed for type 1 Gaucher disease which ameliorate its course and improve symptoms. There is no specific cure of Gaucher disease.
The initial and now standard therapy of Gaucher disease is enzyme replacement, based upon regular infusions of the missing enzymes, glucocerebrosidase. The active enzyme can be prepared from human tissue (placentas) or produced by recombinant DNA technology. Recently, new approaches to therapy have been introduced including substrate restriction, based upon inhibiting enzymes upstream of glucocerebrosidase and, thus, limiting the damaging accumulation of its ultimate harmful substrate, glucosylceramide, which normally is metabolized to glucocerebroside upon which the enzyme acts. Future therapies might employ drugs that modify the folding or trafficking of glucocerebrosidase inside the cell, making it more effective. Ultimately, gene therapy to replace the abnormal enzyme may become a reality.
Current therapies for Gaucher disease discussed in LiverTox include the following:
Gaucher Disease Agents
References updated: 15 September 2015
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Elstein D, Zimran A. Review of the safety and efficacy of imiglucerase treatment of Gaucher disease. Biologics 2009; 3: 407-17. PubMed Citation (Review of the pathogenesis and clinical features of Gaucher disease, types 1, 2 and 3, as well as the development of enzyme replacement therapy and long term efficacy and safety of imiglucerase, a human recombinant form of glucocerebrosidase that was given intravenously every 2 weeks and largely replaced the placental tissue derived product [alglucerase], which was given 3 times weekly).
Velaglucerase (Vpriv) for Gaucher's disease. Med Lett Drugs Ther 2010; 52 (1337): 36. PubMed Citation (Concise review of the mechanism of action, efficacy and cost of velaglucerase, shortly after this second recombinant form of glucocerebrosidase was approved as therapy of type 1 Gaucher disease; no discussion of adverse events).
Eliglustat (Cerdelga)--an oral drug for Gaucher disease. Med Lett Drugs Ther 2015; 57 (1472): e100-1. PubMed Citation (Concise review of the mechanism of action, clinical efficacy, adverse effects, drug-drug interactions and costs of eliglustat shortly after its approval for Gaucher disease in the US, lists its adverse effects of fatigue, headache, nausea, diarrhea and back pain, but does not mention ALT elevations or clinically apparent liver injury).