The purpose of the study is to characterize the clinical course of homocystinuria in pediatric and adult patients aged 1 to 65 years under current clinical management practices
Patients who are clinically diagnosed with homocystinuria
Male/female patients aged 1 to 65 years
Patients who consented and/or assented
Patients who are willing and able to comply with all study-related procedures.
Medically significant postnatal complications or congenital anomalies that are not associated with homocystinuria
Received any experimental therapy for homocystinuria during the 6 months prior to enrollment or expected to receive any such therapy during duration of the study