Stop Sanfilippo is a private foundation based in Madrid, Spain. It is an independent non profit organization, dedicated to the encouragement of Sanfilippo Syndrome research and development. The mission of Stop Sanfilippo is to encourage Sanfilippo Syndrome research with the objective of finding a cure or a treatment, improve the quality of life of the affected children and their families and spread knowledge about the illness in order to help achieve early diagnoses.