The Affymetrix Axiom platform is a hybridization-based genotyping array that offers a flexible choice of predesigned modules and customizable contents. Its utility has been shown in large cohorts, such as the UK Biobank26 (link) and Million Veteran Program,29 (link) multirace/ethnic cohorts,30 (link) and in focused research areas such as transplant research.24 (link) There are approximately 1.38 million features available. Some SNPs and copy number polymorphisms (CNPs) take more than one feature to be genotyped with high quality. As a result, the TM-Array contains approximately 879,000 SNPs and CNPs.