A Long-term Follow-up Study of Patients Who Received VOR33

VBP201 study is the VOR33 long-term follow-up (LTFU) study focusing on assessing long term safety and efficacy of VOR33. This study may last up to 15 years (counted from the date of VOR33 infusion completion). All patients who have participated in a study involving the drug product VOR33 and have completed the applicable study or prematurely discontinued, but have at least received the VOR33 infusion, will be asked to participate in the LTFU study.