What causes Alexander Disease?
Generally, Alexander Disease does not appear to be genetically inherited. This means that although a genetic defect is present in the patient, neither of the parents of the patient have that genetic defect. This type of genetic basis of disease is sometimes called sporadic, meaning that the defect in the gene occurred spontaneously. Practically, this means that if parents have one child with Alexander Disease, any other children they might have will be very unlikely to have the disease. However, it should be noted that some cases of familial (genetically inherited) Alexander disease have been reported; these familial cases may be more prevalent in the adult form of Alexander Disease than in the infantile or juvenile form (see descriptions of these under Symptoms of Alexander Disease).
The great majority of all cases of Alexander Disease (infantile, juvenile and adult) are caused by a defect in a specific gene called GFAP, which stands for Glial Fibrillary Acidic Protein. GFAP is an intermediate filament protein, which means that it is involved in the structural development of the cells. Studies of the role of this protein in both health and disease are ongoing.
Infantile Alexander Disease occurs in different ethnic groups and areas of the world, and does not appear to be prevalent in any particular group. There does not appear to be a difference in frequency between the sexes.
What causes Alexander Disease?
Generally, Alexander Disease does not appear to be genetically inherited. This means that although a genetic defect is present in the patient, neither of the parents of the patient have that genetic defect. This type of genetic basis of disease is sometimes called sporadic, meaning that the defect in the gene occurred spontaneously. Practically, this means that if parents have one child with Alexander Disease, any other children they might have will be very unlikely to have the disease. However, it should be noted that some cases of familial (genetically inherited) Alexander disease have been reported; these familial cases may be more prevalent in the adult form of Alexander Disease than in the infantile or juvenile form (see descriptions of these under Symptoms of Alexander Disease).
The great majority of all cases of Alexander Disease (infantile, juvenile and adult) are caused by a defect in a specific gene called GFAP, which stands for Glial Fibrillary Acidic Protein. GFAP is an intermediate filament protein, which means that it is involved in the structural development of the cells. Studies of the role of this protein in both health and disease are ongoing.
Infantile Alexander Disease occurs in different ethnic groups and areas of the world, and does not appear to be prevalent in any particular group. There does not appear to be a difference in frequency between the sexes.
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What causes Alexander Disease?
Generally, Alexander Disease does not appear to be genetically inherited. This means that although a genetic defect is present in the patient, neither of the parents of the patient have that genetic defect. This type of genetic basis of disease is sometimes called sporadic, meaning that the defect in the gene occurred spontaneously. Practically, this means that if parents have one child with Alexander Disease, any other children they might have will be very unlikely to have the disease. However, it should be noted that some cases of familial (genetically inherited) Alexander disease have been reported; these familial cases may be more prevalent in the adult form of Alexander Disease than in the infantile or juvenile form (see descriptions of these under Symptoms of Alexander Disease).
The great majority of all cases of Alexander Disease (infantile, juvenile and adult) are caused by a defect in a specific gene called GFAP, which stands for Glial Fibrillary Acidic Protein. GFAP is an intermediate filament protein, which means that it is involved in the structural development of the cells. Studies of the role of this protein in both health and disease are ongoing.
Infantile Alexander Disease occurs in different ethnic groups and areas of the world, and does not appear to be prevalent in any particular group. There does not appear to be a difference in frequency between the sexes.
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