Drug interactions
Axicabtagene ciloleucel + Rituximab
Severity: Moderate
Axicabtagene ciloleucel and Rituximab: moderate 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
Rituximab causes B-cell depletion and is immunosuppressive, adding to the prolonged cytopenias and infection risk seen after axicabtagene ciloleucel. Rituximab is also commonly used within CAR T programs, so the real-world issue is cumulative immunosuppression and hypogammaglobulinemia.
What this interaction means in plain words
Axicabtagene ciloleucel and Rituximab can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Axicabtagene ciloleucel belongs to Oncology; Rituximab belongs to Musculoskeletal.
Why it happens
Additive immunosuppression from B-cell depletion on top of CAR T-related cytopenias and B-cell aplasia.
What to do
Monitor blood counts, immunoglobulin levels and signs of infection, and consider antimicrobial prophylaxis and immunoglobulin replacement. Time rituximab according to the CAR T treatment protocol.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Rituximab
Other interactions of Axicabtagene ciloleucel
Frequently asked questions
Can I take Axicabtagene ciloleucel with Rituximab?
MediHelp rates the interaction as moderate. Axicabtagene ciloleucel and Rituximab can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Rituximab causes B-cell depletion and is immunosuppressive, adding to the prolonged cytopenias and infection risk seen after axicabtagene ciloleucel. Rituximab is also commonly used within CAR T programs, so the real-world issue is cumulative immunosuppression and hypogammaglobulinemia.
How serious is the interaction between Axicabtagene ciloleucel and Rituximab?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts, immunoglobulin levels and signs of infection, and consider antimicrobial prophylaxis and immunoglobulin replacement. Time rituximab according to the CAR T treatment protocol.
What other medicines interact with Rituximab?
MediHelp also lists interactions of Rituximab with, for example, Adenovirus types 4 and 7 live, Baricitinib, Certolizumab pegol. The full list is on the Rituximab page.
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