October 4, 2021
The APOE and Serotonin Transporter Alleles (Early, Version 1.0) data product includes data for the APOE isoform, directly genotyped using a Taqman allelic discrimination SNP assay, where available, or imputed from preexisting genotype array data otherwise. This file also includes human serotonin transporter (5HTTLPR) short and long alleles measured using polymerase chain reaction (PCR). In total, there are 19,193 HRS participants in the data file: 17,237 with directly genotyped data for APOE and 1,956 additional participants with imputed data. There are 17,364 participants with valid values for 5HTTLPR.