An observational, long-term follow up (LTFU) study of participants who received an allogeneic CAR T product in a prior clinical study. Participants will be followed for 15 years after their last infusion of an allogenic CAR T cell product.

Inclusion Criteria:

• Received an allogenic CAR T-cell product infusion to treat an oncologic condition in a previous Allogene or Servier sponsored clinical study

Exclusion Criteria:

• Less than 12 months of follow up after the last allogeneic CAR T-cell product, unless approved by the Allogene Medical Monitor

Participants who have received an allogeneic CAR T-cell product.