This human reference is based on the GRCh37.p5 version of the human genome assembly. The GRCh37.p5 version is described at this web site: http://www.ncbi.nlm.nih.gov/projects/genome/assembly/grc/human/data/index.shtml.

The remainder of this section lists differences between GRCh37.p5 and the Ion Reference hg19 versions of the human genome.