Long-term Follow-up After Adoptive Transfer of Genetically Modified Cell Products

This is a prospective, longitudinal, non-therapeutic study which includes routine assessment for long-term effects, as per FDA guidelines, after receipt of a gene therapy product on a St. Jude investigator-initiated clinical trial. There will be no group assignment, no use of placebo groups and no use of control subjects. Participants will enroll on this long-term follow-up study after completion of necessary follow-ups on the interventional clinical trial on which they received treatment with a genetically modified product, to complete a total of 15 years of follow-up post infusion.

Assessments will include routine history, physical exam and blood sample procurement, in accordance with FDA guidance, for 15 years post infusion of the gene therapy product. Study evaluations may be performed by a local provider in conjunction with the St. Jude research team. In addition, standard clinical data related to the subject's prior gene therapy treatment will be reviewed. The data may include, but is not limited to: patient demographics, disease history, on-going disease status updates, gene therapy product and treatment characteristics, patient clinical status, post gene therapy disease directed therapies, relapse and death

Inclusion criteria

• Receipt of a genetically modified cell product on a St. Jude investigator-initiated study within the prior 15 years.

Exclusion criteria

• Inability or unwillingness of research participant and/or legal guardian/ representative to give written informed consent.