Family members with just a single copy of her version of a particular gene – what’s known as the Christchurch variant of apolipoprotein E (APOE) – seem to also be protected against genetically determined early-onset dementia, researchers say, albeit to a far lesser extent.
https://www.sciencealert.com/this-rare-gene-variant-seems-to-protect-you-from-alzheimers-disease



