Towards a better understanding of the side effects associated with the use of CAR-T cells

German clinicians have studied adverse side effects in patients with autoimmune diseases who have received CAR-T cells targeting the CD19 antigen:

  • 39 adult patients, including six with inflammatory myopathy of autoimmune origin, were selected for this retrospective study.
  • 30 of them developed a cutaneous and/or renal intolerance syndrome within 10 days of CAR-T cell injection.
  • this complication, known as LICATS (local immune effector cell-associated toxicity syndrome), also resolved spontaneously within ten days.

The authors believe that these LICATS cases correspond to the cleansing of immune cells located in the target organs.

 

Local immune effector cell-associated toxicity syndrome in CAR T-cell treated patients with autoimmune disease: an observational study. Hagen M, Müller F, Wirsching A et al. Lancet Rheumatol. 2025 Jun