A Non-interventional, Post-Marketing Study to Describe Outcome of Nitisinone Treatment in HT-1 Patients

This is a prospective, non-interventional, non-comparative, multicenter study to collect data on HT-1 patients in China treated with Nitisinone in a routine clinical setting. No tests or examinations are mandated in the study, though the expectation is that most of the tests and examinations listed in the protocol will be performed in the context of routine clinical care and relevant data will be captured. At enrollment, data on patient treatment, medical and surgical history together with other patient characteristics will be captured.Patients enrolled in the study will be followed for at least 1 year and for a maximum of 3.5 years. The study aims to enroll at least 15 HT-1 patients aged 0-18 years. If adult patients are enrolled the study population will be larger as all eligible patients will be invited to participate. However, the enrollment will close when the target of 15 patients aged 0-18 years has been reached.