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Causes Of Huntington's Disease

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Huntington’s disease is a progressive, fatal, neurodegenerative disorder caused by an expanded CAG repeat in the huntingtin gene, which encodes an abnormally long polyglutamine repeat in the huntingtin protein Huntington’s is a disease that advances very slowly over a lifetime, it is hereditary. HD is a disorder that causes changes in the brain. Which affect mobility, mood and the ability to think clearly. Each year about two thousand people are diagnosed with HD. One thousand fifty people are at risk to get this disease in the United States alone. There is a worldwide occurrence of HD, but the lowest is Japan (Ross, 2011).
What is Huntington’s disease?
Huntington’s disease is a neurodegenerative disorder. This disorder is very similar to …show more content…
In some families there is an abnormal copy of the gene and that gets passed to their children. If someone has a parent with Huntington’s disease, then they have a fifty percent chance of having the gene and developing the disease. If the parents don’t have the abnormal HD gene, then they cannot get it and pass it on to their children. Men and woman are equally able to inherit the abnormal gene. It is not more common in woman or men. Once the abnormal gene is in the family it does not skip generations (Phillips, 2013). The gene defect involves extra of one specific chemical code in a small section of chromosome four. The normal huntingtin gene includes seventeen to twenty repetitions of the code. This defect causes forty or more repeats. There is a genetic test to measure the number of repeats in the protein …show more content…
Huntington’s can affect men and woman equally. It doesn’t matter what ethnic background the patient comes from. The disease happens throughout the world but there are some geographic clusters where it is not as common. There is not an accurate estimate of the number of HD cases each year. Based on Huntington’s statistics thirty thousand people are diagnosed with this disorder in the United States alone (Paulsen, 2014). At least one hundred fifty thousand people have a fifty percent chance of developing HD at some point in their lives. Other statistics have shown that people with the most common form of HD can usually live from fifteen to twenty five years after being diagnosed with the disorder. The disease is less common in some people like African Americans and Japanese. In very rare cases there is a small percentage of the disease occurring even if there is no family history of Huntington’s

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