The HLA gene complex is located on a 3.6 Mb region within chromosome 6p21. They are the most polymorphic gene family found in the human genome, with more than 10,000 different HLA alleles reported to date, thus the capacity to mount an immune response can be remarkably different between individuals within a cohort selected from a single population. https://www.capitalbiotechnology.com/products/hla-typing/All Rights Reserved