A Long Term Follow-Up Study for Subjects Who Have Received Q-Cells

This study is an observational study designed to obtain information on the long-term safety, tolerability, and continued activity of Q-Cells®. The study will follow the participants who previously received Q-Cells® for 10 years. The goal of this observational study is to learn about the long term effects of Q-Cells® in people with transverse myelitis. The main objectives the study is to evaluate the safety of patients who have received Q-Cells®. The secondary goal of the study is to get data about the long-term activity of Q-Cells® over a period of 10 years. Patients will complete exams, lab tests, imaging, and questionnaires to monitor their safety.