Tooth Agenesis, Selective, 1, also known as hypodontia/oligodontia 1, is related to tooth agenesis and tooth agenesis, selective, 10. An important gene associated with Tooth Agenesis, Selective, 1 is MSX1 (Msh Homeobox 1), and among its related pathways/superpathways is Wnt / Hedgehog / Notch. Affiliated tissues include prostate, and related phenotypes are hypodontia and Synthetic lethal with vaccinia virus (VACV) infection