The Infinium ImmunoArray-24 v2 BeadChip is the next-generation genotyping array for detecting genetic variation in the human immune system. This BeadChip includes the most valuable content from the HumanImmuno v1 BeadChip, supplemented with newly selected content produced by the immunology research community. This new content includes the majority of the loci currently published in the GWAS catalog for major autoimmune and inflammatory disorders1 as well as published ancestry informative markers.