A name is just a name. There are about 20 varieties of apoE, most of which are extremely rare, i.e. found in only a handful of families. ApoE1 is simply rare,

A name is just a name. There are about 20 varieties of apoE, most of which are extremely rare, i.e. found in only a handful of families. ApoE1 is simply rare, and not really relevant to Alzheimer's disease, although it does affect blood cholesterol levels. http://www.ncbi.nlm.nih.gov/pubmed/?term=22859420 http://www.ncbi.nlm.nih.gov/pubmed/?term=22859420