NCIt definition : Human TSHB wild-type allele is located in the vicinity of 1p13.2 and is approximately
6 kb in length. This allele, which encodes thyrotropin subunit beta protein, plays
a role in thyroid development and thyroid hormone production. Mutation of the gene
is associated with congenital nongoitrous hypothyroidism type 4, congenital central
and secondary hypothyroidism and Hashimoto's thyroiditis.;