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Trade names | Lamzede |
Other names | Velmanase alfa-tycv |
AHFS/Drugs.com | Micromedex Detailed Consumer Information |
MedlinePlus | a623015 |
License data | |
Routes of administration | Intravenous |
ATC code | |
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Velmanase alfa, sold under the brand name Lamzede, is a medication used for the treatment of alpha-mannosidosis. [2] [3] [4] Velmanase alfa is a recombinant human lysosomal alpha-mannosidase. [2] [5]
The most common adverse reactions include hypersensitivity reactions including anaphylaxis, a severe, potentially life-threatening allergic reaction. [2]
Velmanase alfa was approved for medical use in the European Union in March 2018, [3] [5] and in the United States in February 2023. [2] [6] Velmanase alfa is the first enzyme replacement therapy approved in the US for the treatment of the non-central nervous system manifestations of alpha-mannosidosis. [2] The US Food and Drug Administration (FDA) considers it to be a first-in-class medication. [7]
Velmanase alfa is indicated for the treatment of the non-central nervous system manifestations of alpha-mannosidosis. [2]
Alpha-mannosidosis is a rare genetic lysosomal storage disorder. [2] The symptoms of the disorder vary, but often include mild to moderate intellectual disability, hearing loss, weakened immune system, distinctive facial features (e.g., a large head, prominent forehead, and protruding jaw), skeletal abnormalities, and muscle weakness. [2] Alpha-mannosidosis is caused by genetic changes in the MAN2B1 gene, which codes for the lysosomal alpha-mannosidase enzyme. [2] Mutations of the MAN2B1 gene result in the lack of production of the alpha-D-mannosidase enzyme or the production of a defective, inactive form of the enzyme. [2] Alpha-mannosidosis affects about 1 in every 500,000 people worldwide. [2]
The effectiveness of velmanase alfa was evaluated in participants with alpha-mannosidosis in a phase III multicenter, randomized, double-blind, placebo-controlled, parallel group study. [2] The trial evaluated the efficacy of velmanase alfa over 52 weeks at a dose of 1 mg/kg given weekly as an intravenous infusion. [2] A total of 25 participants were enrolled (14 males, 11 females), including 13 adult participants (age range: ≥18 to 35 years; mean: 25 years) and 12 pediatric participants (age range: ≥6 to <18 years; mean: 11 years); all participants were White. [2] Fifteen participants (8 adult and 7 pediatric) received velmanase alfa and 10 participants (5 adult and 5 pediatric) received placebo. [2]
Velmanase alfa is the international nonproprietary name. [8]
Fabry disease, also known as Anderson–Fabry disease, is a rare genetic disease that can affect many parts of the body, including the kidneys, heart, brain, and skin. Fabry disease is one of a group of conditions known as lysosomal storage diseases. The genetic mutation that causes Fabry disease interferes with the function of an enzyme that processes biomolecules known as sphingolipids, leading to these substances building up in the walls of blood vessels and other organs. It is inherited in an X-linked manner.
Alpha-mannosidosis is a lysosomal storage disorder, first described by Swedish physician Okerman in 1967. In humans it is known to be caused by an autosomal recessive genetic mutation in the gene MAN2B1, located on chromosome 19, affecting the production of the enzyme alpha-D-mannosidase, resulting in its deficiency. Consequently, if both parents are carriers, there will be a 25% chance with each pregnancy that the defective gene from both parents will be inherited, and the child will develop the disease. There is a two in three chance that unaffected siblings will be carriers. In livestock alpha-mannosidosis is caused by chronic poisoning with swainsonine from locoweed.
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