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Both parents must be a carrier of Sandhoff for their children to be at risk.
Sandhoff is a progressive neurological genetic disorder caused by the absence of a vital enzyme.Â It is one of over 50 genetically inherited disorders known as Lysosomal Storage Diseases.
Classic Infantile Sandhoff- Symptoms appear around 6 months of age.
Juvenile Sandhoff- Symptoms appear after the first year of life, typically between ages 2 and 5, but can occur anytime during childhood.
Late Onset Sandhoff - Symptoms typically appear in adolescence or early adulthood, but sometimes later.
Anyone can be a carrier of Sandhoff. When both parents are carriers, each child has a 25% of having the disease. The carrier rate for the general population is low, approximately 1/600 and it is not yet clear whether Sandhoff disease is more common in any particular population, but may have a higher carrier rate in several somewhat isolated populations. Talk to your doctor about genetic counseling to discuss your options before starting your family.
Causes - Sandhoff is caused by the absence of two vital enzymes:
Hexosaminidase A (Hex A) and
Hexosaminidase B (Hex B).
Research - To date, there is no treatment or cure for Sandhoff disease but there is exciting ongoing research.
History - The disease is named for Konrad Sandhoff, a German chemist.
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