Drug interactions
Thioguanine + Tisagenlecleucel
Severity: Major
Thioguanine and Tisagenlecleucel: major interaction.
Last updated
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
Thioguanine is a cytotoxic antimetabolite that can impair lymphocytes and may reduce the expansion and persistence of CAR T cells. It also adds to the infection risk that follows CAR T therapy.
What this interaction means in plain words
Thioguanine 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.
Thioguanine belongs to Oncology; Tisagenlecleucel belongs to Oncology.
Why it happens
Lymphodepleting and myelosuppressive effects of thioguanine may compromise CAR T-cell expansion and add to immunosuppression.
What to do
Avoid thioguanine in the period before leukapheresis and after infusion unless clinically required, and coordinate timing with the CAR T treatment team. Monitor for infection and cytopenias.
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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Other interactions of Thioguanine
Other interactions of Tisagenlecleucel
Frequently asked questions
Can I take Thioguanine with Tisagenlecleucel?
MediHelp rates the interaction as major. Thioguanine 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. Thioguanine is a cytotoxic antimetabolite that can impair lymphocytes and may reduce the expansion and persistence of CAR T cells. It also adds to the infection risk that follows CAR T therapy.
How serious is the interaction between Thioguanine 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 thioguanine in the period before leukapheresis and after infusion unless clinically required, and coordinate timing with the CAR T treatment team. Monitor for infection and cytopenias.
What other medicines interact with Thioguanine?
MediHelp also lists interactions of Thioguanine with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Thioguanine page.
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