Variable Details

Available Studies

ROS, MAP, MARS, Clinical Core, LATC


Not Scaled

Variable Type 


Variable Name 



ApoE and TOMM40

ApoE genotype
Apolipoprotein E genotype

Apolipoprotein E (APOE) genotype

value coding
22 E2E2
23 E2E3
24 E2E4
33 E3E3
34 E3E4
44 E4E4

DNA was extracted from PBMCs or brain. Genotyping was performed by Agencourt Bioscience Corporation utilizing high-throughput sequencing of codon 112 (position 3937) and codon 158 (position 4075) of exon 4 of the APOE gene on chromosome 19.

Data updated 6/23/2015

Participants were genotyped for APOE alleles by Polymorphic DNA Technologies.

All APOE data were generated by Polymorphic DNA Technologies as part of a collaboration with Allan Roses and Zinfandel.