NCIt definition : Human HEXA wild-type allele is located in the vicinity of 15q23 and is approximately
35 kb in length. This allele, which encodes beta-hexosaminidase subunit alpha protein,
plays a role in 3-beta hexosaminidase activity. Mutation of the gene is associated
with Tay Sachs disease and other forms of GM2-related gangliosidosis.;