Table 1.

Late infection prophylaxis in adult patients receiving CAR T-cell therapy

InfectionRecommendationProphylaxisDuration
Bacterial • Not generally recommended
• Consider in patients with prolonged neutropenia or long-term corticosteroid administration 
• Fluoroquinolones (eg, levofloxacin)
• Alternatives include extended-spectrum beta-lactam antibiotics (eg, amoxicillin/ clavulanic acid) or nonabsorbable antibiotics (eg, rifaximin) in patients with specific allergies 
• Continue until resolution of neutropenia and discontinuation of corticosteroids 
Fungal • Not generally recommended
• Consider in patients with prolonged neutropenia and/or long-term corticosteroid administration 
• Fluconazole 200-400  mg orally daily
• Posaconazole 300  mg orally daily can be considered in patients at higher risk (eg, prior mold infection; prior allogeneic stem transplant) 
• Continue until resolution of neutropenia and discontinuation of corticosteroids 
Herpes viruses • Generally recommended for all patients • Acyclovir 200-400  mg orally twice a day or valacyclovir 500  mg orally twice a day • Continue a minimum of 6 months and until CD4 count >200 cells/mL 
Pneumocystis jirovecii • Generally recommended for all patients • Double-strength trimethoprim-sulfamethoxazole orally 3 times weekly
• Dapsone 100  mg orally daily for patients with a sulfa allergy or prolonged cytopenias
• Atovaquone 1500  mg orally daily or monthly aerosolized pentamidine for patients with a G6PD-deficiency 
• Continue a minimum of 6 months and until CD4 count >200 cells/mL 
InfectionRecommendationProphylaxisDuration
Bacterial • Not generally recommended
• Consider in patients with prolonged neutropenia or long-term corticosteroid administration 
• Fluoroquinolones (eg, levofloxacin)
• Alternatives include extended-spectrum beta-lactam antibiotics (eg, amoxicillin/ clavulanic acid) or nonabsorbable antibiotics (eg, rifaximin) in patients with specific allergies 
• Continue until resolution of neutropenia and discontinuation of corticosteroids 
Fungal • Not generally recommended
• Consider in patients with prolonged neutropenia and/or long-term corticosteroid administration 
• Fluconazole 200-400  mg orally daily
• Posaconazole 300  mg orally daily can be considered in patients at higher risk (eg, prior mold infection; prior allogeneic stem transplant) 
• Continue until resolution of neutropenia and discontinuation of corticosteroids 
Herpes viruses • Generally recommended for all patients • Acyclovir 200-400  mg orally twice a day or valacyclovir 500  mg orally twice a day • Continue a minimum of 6 months and until CD4 count >200 cells/mL 
Pneumocystis jirovecii • Generally recommended for all patients • Double-strength trimethoprim-sulfamethoxazole orally 3 times weekly
• Dapsone 100  mg orally daily for patients with a sulfa allergy or prolonged cytopenias
• Atovaquone 1500  mg orally daily or monthly aerosolized pentamidine for patients with a G6PD-deficiency 
• Continue a minimum of 6 months and until CD4 count >200 cells/mL 

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