<qa>  What is the name of the Fabry disease study that includes 100 patients?Patients of all ages with biochemical or genetic evidence of Fabry disease i.e., individuals who have a deficiency of the enzyme a-galactosidase A or a mutation in the gene that encodes this enzyme, or both are eligible for this study. This worldwide study will include 100 patients participating in Fabry disease studies at the NIH. These patients will come to the NIH Clinical Center only as required for participation their Fabry disease study. No additional procedures will be required for the current registry study. 