Table 2

Supportive care guidelines for patients receiving CAR T cells

ToxicityPreventive and supportive care interventions
Constitutional Administer acetaminophen for symptomatic management of fevers in patients with normal hepatic function; 
Provide cooling blankets for fevers >40°C; 
Avoid corticosteroids and NSAIDs; and 
Avoid meperidine 
Cardiovascular Stop or taper antihypertensive medications prior to cell infusion; 
Monitor vital signs at least every 4 h on an inpatient unit for at least 9 d following infusion; 
Monitor vital signs every 2 h in patients with fevers and tachycardia; 
Initiate replacement IV fluids for patients with poor oral intake or high insensible losses to maintain net even fluid balance; 
Administer IV fluid boluses for patients with SBP less than their preinfusion baseline: 
 Patients with a SBP <80% of their preinfusion baseline and <100 mm Hg receive a 1 liter normal saline bolus 
 Patients with a SBP <85 mm Hg receive a 1 liter normal saline bolus regardless of baseline blood pressure 
Patients receiving >1 IV fluid bolus for hypotension or patients in the ICU for toxicity management have a serum troponin drawn, and an ECG and an echocardiogram performed to evaluate for cardiac toxicity; and 
Patients with hypotension are initiated on vasopressor support. Norepinephrine is the preferred first-line vasopressor 
Infectious disease Initiate prophylactic antimicrobials, such as trimethoprim-sulfamethoxazole, for Pneumocystis prophylaxis prior to conditioning chemotherapy; 
Initiate prophylactic antimicrobials, such as acyclovir or valacyclovir, for herpes virus prophylaxis prior to conditioning chemotherapy; and 
All patients with fevers and neutropenia have blood cultures drawn and broad-spectrum antibiotic coverage initiated 
Hematologic Initiate allopurinol for TLS prophylaxis in patients without a contraindication prior to conditioning chemotherapy; 
Transfuse packed red cells for goal hemoglobin of ≥8.0 g/dL; 
Transfuse platelets for a goal platelet count of ≥20 000/μL; 
Monitor complete blood count with differential twice daily. When ANC decreases to <500/μL, initiate filgrastim support. Continue until ANC increases to ≥1500 μL; 
Transfuse fresh frozen plasma with a goal of normalization of PTT in patients with a PTT >1.5-fold above the upper limit of normal; and 
Transfuse cryoprecipitate to maintain fibrinogen of ≥100 mg/dL. If patient is bleeding, a higher level of fibrinogen should be maintained 
Neurologic The nursing staff conducts focused neurologic examinations every 8 h in patients experiencing neurologic toxicity; 
Perform brain MRI in any patient experiencing neurologic toxicity; 
Perform lumbar puncture to evaluate for infectious pathogens, cytokine levels, and CAR T-cell levels in patients experiencing neurologic toxicity whenever feasible; 
Request a neurology consultation for any patient experiencing neurologic toxicity; and 
Standard antiepileptic medications are used for patients having active seizures. We do not use prophylactic antiepileptic medications 
ToxicityPreventive and supportive care interventions
Constitutional Administer acetaminophen for symptomatic management of fevers in patients with normal hepatic function; 
Provide cooling blankets for fevers >40°C; 
Avoid corticosteroids and NSAIDs; and 
Avoid meperidine 
Cardiovascular Stop or taper antihypertensive medications prior to cell infusion; 
Monitor vital signs at least every 4 h on an inpatient unit for at least 9 d following infusion; 
Monitor vital signs every 2 h in patients with fevers and tachycardia; 
Initiate replacement IV fluids for patients with poor oral intake or high insensible losses to maintain net even fluid balance; 
Administer IV fluid boluses for patients with SBP less than their preinfusion baseline: 
 Patients with a SBP <80% of their preinfusion baseline and <100 mm Hg receive a 1 liter normal saline bolus 
 Patients with a SBP <85 mm Hg receive a 1 liter normal saline bolus regardless of baseline blood pressure 
Patients receiving >1 IV fluid bolus for hypotension or patients in the ICU for toxicity management have a serum troponin drawn, and an ECG and an echocardiogram performed to evaluate for cardiac toxicity; and 
Patients with hypotension are initiated on vasopressor support. Norepinephrine is the preferred first-line vasopressor 
Infectious disease Initiate prophylactic antimicrobials, such as trimethoprim-sulfamethoxazole, for Pneumocystis prophylaxis prior to conditioning chemotherapy; 
Initiate prophylactic antimicrobials, such as acyclovir or valacyclovir, for herpes virus prophylaxis prior to conditioning chemotherapy; and 
All patients with fevers and neutropenia have blood cultures drawn and broad-spectrum antibiotic coverage initiated 
Hematologic Initiate allopurinol for TLS prophylaxis in patients without a contraindication prior to conditioning chemotherapy; 
Transfuse packed red cells for goal hemoglobin of ≥8.0 g/dL; 
Transfuse platelets for a goal platelet count of ≥20 000/μL; 
Monitor complete blood count with differential twice daily. When ANC decreases to <500/μL, initiate filgrastim support. Continue until ANC increases to ≥1500 μL; 
Transfuse fresh frozen plasma with a goal of normalization of PTT in patients with a PTT >1.5-fold above the upper limit of normal; and 
Transfuse cryoprecipitate to maintain fibrinogen of ≥100 mg/dL. If patient is bleeding, a higher level of fibrinogen should be maintained 
Neurologic The nursing staff conducts focused neurologic examinations every 8 h in patients experiencing neurologic toxicity; 
Perform brain MRI in any patient experiencing neurologic toxicity; 
Perform lumbar puncture to evaluate for infectious pathogens, cytokine levels, and CAR T-cell levels in patients experiencing neurologic toxicity whenever feasible; 
Request a neurology consultation for any patient experiencing neurologic toxicity; and 
Standard antiepileptic medications are used for patients having active seizures. We do not use prophylactic antiepileptic medications 

These are the current treatment guidelines used for adult patients at the NCI Experimental Transplantation and Immunology Branch.

ANC, absolute neutrophil count; ICU, intensive care unit; MRI, magnetic resonance imaging; NSAIDs, nonsteroidal anti-inflammatory agents; SBP, systolic blood pressure.

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