Abstract
Rare diseases are those whose incidence occurs in up to 65 cases in each group of 100 thousand people [Ministry of Health: available at http://portalms.saude.gov.br/saude-de-az/doencas-raras]. It is estimated that there are between 6,000 and 8,000 different types of rare diseases worldwide [Ministry of Health: available at http://portalms.saude.gov.br/saude-de-a-z/doencas-raras]. In Brazi…