Scientists detect variant gene in Alzheimer's disease

Having genetically screened some 6,000 people, the researchers found that people with Alzheimer’s had distinguishing genetic markers in just one of the seven genes, known as SORL1. Patients with the variant forms of the gene produce less SORL1 than usual, leading to a different traffic pattern and allowing a particular protein in nerve cells, known as the amyloid precursor protein, to be converted into toxic form.