 MSX1

Msh homeobox 1, also known as MSX1, is a protein that in humans is encoded by the "MSX1" gene.MSX1 transcripts are not only found in thyrotrope-derived TSH cells, but also in the TtT97 thyrotropic tumor, which is a well differentiated hyperplastic tissue that produces both TSHß- and a-subunits and is responsive to thyroid hormone.