Treatment guidelines for CAR T-cell therapy

Hemophagocytic lymphohistiocytosis and/or macrophage-activation syndrome can be treated with anti-IL-6 therapy and corticosteroids. However, refractory cases may require systemic and/or intrathecal therapy or use of the IL-1 receptor antagonist anakinra (level of evidence: IIA, grade: C).

The guidelines recommend that delirium screening be performed at least twice per 24-hour period among admitted patients and at least daily among outpatients during the high-risk periods for CRES (level of evidence: IIA, grade: C). Delirium screening should be performed with the CAPD (Cornell Assessment of Pediatric Delirium) tool or CARTOX-10 (CAR T-Cell Therapy-Associated Toxicity 10-point assessment scale) for patients age 12 and older who have sufficient cognitive abilities.

Acute kidney injury in children can be graded according to the CTCAE (Common Terminology Criteria for Adverse Events) using pRIFLE (Pediatric Risk, Injury, Failure, Loss, End-Stage Renal Disease) and KDIGO (Kidney Disease: Improving Global Outcomes) definitions of oliguria (level of evidence: IIA, grade: B).

Other considerations

The guidelines “strongly encourage” consideration of quality-adjusted life-years gained for pediatric patients who might achieve long-term remission from CAR T-cell therapy and encourage efforts to reduce the cost of care (level of evidence: IV, grade: D).

The guidelines also recommend that CAR T-cell programs seek FACT IEC (Foundation for the Accreditation of Cellular Therapy for Immune Effector Cells) accreditation to ensure adherence to quality standards (level of evidence: IV, grade: D).

Finally, the guidelines suggest the possibility of a prospective collaboration with intensive-care registries, which could allow accurate data entry of cell therapy variables into the CIBMTR registry with concurrent entry of intensive-care variables into an appropriate registry by pediatric critical care teams (level of evidence: IV, grade: D).