Alzheimer's disease (AD) is the most frequent neurodegenerative disease amongst the elderly. The SNPs rs429358 and rs7412 in the APOE gene are the most common risk factor for sporadic AD, and there are three different alleles commonly referred to as APOE-epsilon 2, APOE-epsilon 3 and APOE-epsilon 4. Induced pluripotent stem cells (iPSCs) hold great promise to model AD as such cells can be differentiated in vitro to the required cell type. Here we report the use of CRISPR/Cas9 technology employed on iPSCs from a healthy individual with an APOE-epsilon 3/epsilon 4 genotype to obtain isogenic APOE-epsilon 2/epsilon 2, APOE-epsilon 3/epsilon 3, APOE-epsilon 4/epsilon 4 lines as well as an APOE-knock-out line.