What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Fludarabine, Cyclophosphamide, or Fludarabine. The registry lists allocation as randomized. The researchers are doing this study to find out whether PK-targeted fludarabine is an effective Lymphodepletion (LD) chemotherapy approach for people with relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL) who will receive tisagenlecleucel CAR T-cell therapy.
They plan to enroll about 130 people at 8 sites. Taking part typically means taking a study drug (or dummy pill), an infusion or injection of a biologic plus check-ins.
Official title (unrewritten)
Improving EveNt Free Survival by Optimizing FLUdarabine Exposure During LymphodepletioN for CAR T CEll Therapy: a Randomized, Multi-center Study of Children and Young Adults With B-cell Acute Lymphoblastic Leukemia (INFLUENCE)
Interventions: Fludarabine, Cyclophosphamide, Fludarabine, CAR-T
Primary outcome (registry wording): compare the event free survival (EFS )