Table 8 Characteristics and management of CAR-T associated ICANS

From: Deep insight into cytokine storm: from pathogenesis to treatment

Characteristics Recognition and management

Signs and symptoms483

Initiation: drowsiness, disorientation, inattention, tremors, expressive aphasia, dysgraphia, and apraxia

Progress: cognitive impairment, focal motor and sensory deficits, epilepsy, fatal cerebral edema, and intracranial hemorrhage

Long-term sequelae

Development time482

Usually occurs concurrently with or shortly after CRS

Delayed instances starting >3 weeks after CAR

T cell infusion

Cytokine profile251

Plasma: IFN-γ, IL-15, IL-6, IL-10, GM-CSF, IL-1RA, IL-2, IP-10, IL-1β, IL-8, TNF

Cerebrospinal fluid: the cytokine profile was similar to that of serum, except for elevated levels of IL-8, CXCL-10 and MCP-1

Risk factor482

Patient characteristics: CRS, disease type, high disease burden, past thrombocytopenia and endothelial activation, and past neurological comorbidities

CAR-T cell product features: targeted CD19, CD28 co-stimulatory domains, receiving fodarabine and cyclophosphamide, high-dose infusion, high levels of serum CAR-T cells

Diagnostic evaluation482

ICE score and/or CAPD score

Neurology consultation; Brain PET–CT, brain MRI, and EEG

Rule out infection and leptomeningeal malignancy

ICANS scoring

Management measure482

Supportive treatment

Glucocorticoids, tocilizumab (only when accompanied by CRS), antiepileptic drugs

Intrathecal hydrocortisone ± intrathecal

chemotherapy, anakinra, siltuximab, ruxolitinib,

cyclophosphamide and/or antithymocyte globulin

ICU treatment, airway protection, special nerve intensive therapy

  1. GM-CSF granulocyte-macrophage colony-stimulating factor, MCP-1 monocyte chemoattractant protein 1, IP-10 interferon- induced protein 10