This is another example of predisposition to Alzheimer’s disease.
Families shed light on likely causative gene for Alzheimer’s
The genetic profile of two large Georgia families with high rates of late-onset Alzheimer’s disease points to a gene that may cause the disease, researchers say.
Genetic variations called single nucleotide polymorphisms, or SNPs, are common in DNA, but this pattern of SNPs shows up in nine out of 10 affected family members.
“We were shocked; we had never seen anything like this before,” Dr. Poduslo says of findings published online in the American Journal of Medical Genetics. “If we looked at unaffected spouses, their SNPs were all different. The variants consistently found in affected siblings are suggesting there is something in this gene. Now we have to go back and find what is in this gene that is making it so unique for Alzheimer’s patients.”