Long-term Follow-up of Study Participants Who Received an Allogeneic Chimeric Antigen Receptor T-Cell Product in an Imugene Ltd. Clinical Study

The goal of this observational study is to collect information on the long-term safety of study participants who received an Allogeneic Chimeric Antigen Receptor (CAR) T-Cell Product in an Imugene Clinical Study. The main questions it aims to answer are: * What are the frequency, severity, duration, and outcome of clinically significant Clinical Events of Interest (CEI)? * What is the duration of response and overall survival time after taking an allogeneic CAR T-Cell product on an Imugene clinical study? Participants will have a yearly visit either face to face or remotely for up to 15 years to check for CEI.