Drug interactions
Deflazacort + Tisagenlecleucel
Severity: Major
Deflazacort and Tisagenlecleucel: major interaction.
Last updated Sources: Health Canada product monograph
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Corticosteroids are lymphotoxic and may blunt the expansion and persistence of CAR-T cells, which could reduce the efficacy of tisagenlecleucel. They also add to infection risk in an already immunocompromised patient. Steroids are still used therapeutically for cytokine release syndrome or neurotoxicity.
What this interaction means in plain words
Deflazacort and Tisagenlecleucel can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Deflazacort belongs to Miscellaneous; Tisagenlecleucel belongs to Oncology.
Why it happens
Pharmacodynamic antagonism: glucocorticoid-mediated suppression and depletion of T lymphocytes reduces CAR-T cell activity, with additive immunosuppression.
What to do
Avoid prophylactic or premedication use of deflazacort around CAR-T infusion unless clinically essential. Reserve corticosteroids for managing cytokine release syndrome or neurologic toxicity, and monitor for infection.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Deflazacort
- Adenovirus types 4 and 7 live + Deflazacort Contraindicated
- Bcg vaccine live + Deflazacort Contraindicated
- Deflazacort + Influenza virus vaccine quadrivalent intranasal Contraindicated
- Deflazacort + Measles mumps and rubella vaccine Contraindicated
- Deflazacort + Measles mumps and rubella vaccine live Contraindicated
- Deflazacort + Measles mumps rubella and varicella vaccine live Contraindicated
Other interactions of Tisagenlecleucel
Frequently asked questions
Can I take Deflazacort with Tisagenlecleucel?
MediHelp rates the interaction as major. Deflazacort and Tisagenlecleucel can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Corticosteroids are lymphotoxic and may blunt the expansion and persistence of CAR-T cells, which could reduce the efficacy of tisagenlecleucel. They also add to infection risk in an already immunocompromised patient. Steroids are still used therapeutically for cytokine release syndrome or neurotoxicity.
How serious is the interaction between Deflazacort and Tisagenlecleucel?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid prophylactic or premedication use of deflazacort around CAR-T infusion unless clinically essential. Reserve corticosteroids for managing cytokine release syndrome or neurologic toxicity, and monitor for infection.
What other medicines interact with Deflazacort?
MediHelp also lists interactions of Deflazacort with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Deflazacort page.
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