Familial Alzheimer's disease (FAD) or early-onset Alzheimer's is an inherited, rare form of the disease, affecting less than 10 percent of Alzheimer's disease patients. FAD develops before age 65, in people as young as 35. It is caused by one of three gene mutations on chromosomes 1, 14 and 21. If even one of these mutated genes is inherited from a parent, the person will almost always develop FAD. All offspring in the same generation have a 50/50 chance of developing FAD if one parent has it. The majority of Alzheimer's disease cases are late-onset, usually developing after age 65. Late-onset Alzheimer's disease has no known cause and shows no obvious inheritance pattern. However, in some families, clusters of cases are seen. Although a specific gene has not been identified as the cause of late-onset Alzheimer's disease, genetic factors do appear to play a role in the development of this form of the disease. A gene called Apolipoprotein E (ApoE) appears to be a risk factor for the late-onset form of AD. There are three forms of this gene: ApoE2, ApoE3 and ApoE4. Roughly one in four Americans has ApoE4 and one in twenty has ApoE2. While inheritance of ApoE4 increases the risk of developing AD, ApoE2 substantially protects against the disease. Scientists believe that several other genes may influence development of Alzheimer's disease. Two of these genes, UBQLN1 and SORL1, are located on chromosomes 9 and 11. Researchers have also identified three genes on chromosome 10, one of which produces an insulin degrading enzyme that may contribute to the disease. Genetic risk factors alone are not enough to cause the late-onset form of Alzheimer's disease, so researchers are actively exploring education, diet and environment to learn what role they might play in the development of this disease.
There is no cure for Alzheimers
No, probably not.
no albinism is a hereditary.
Orthopnea is not hereditary. It is a symptom of a disease.
There is no cure for this disease.
Gayness
What happens when you don't treat Alzheimers disease
The disease was hereditary in their family.
You can check out the Alzheimers Association for information or talk with your Grandmothers doctor. Alzheimers Association would have a check list of questions that you can use to talk with her doctor.
No.
Although Polio is a contagious disease, it is not hereditary or genetic.
You can find information on alzheimers disease from your local library, the internet and various support groups. It is best to start with the hospital they will have a wealth of information.