BRIDGEquine is an organization for educating people about horse genetics. It is a database registry that tracks horse DNA for disease, disease free and color. Membership is encouraged to show support but is not required to use the online database. A great tool for anyone who owns, buys, sells or breeds horses. PSSM, HERDA, HYPP, GBED and MH are all tracked - as well as other diseases as they come up.