Drug interactions
Ciltacabtagene autoleucel + Gemcitabine
Severity: Major
Ciltacabtagene autoleucel and Gemcitabine: 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
Gemcitabine is a myelosuppressive cytotoxic agent, and CAR-T products such as ciltacabtagene autoleucel cause prolonged cytopenias and immune deficiency. Giving them close together can worsen infection risk and may impair CAR-T cell collection or expansion. Gemcitabine is not intended for use as concurrent therapy around CAR-T infusion.
What this interaction means in plain words
Ciltacabtagene autoleucel and Gemcitabine 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.
Ciltacabtagene autoleucel belongs to Miscellaneous; Gemcitabine belongs to Oncology.
Why it happens
Additive immunosuppression and myelosuppression; cytotoxic chemotherapy may also reduce the function or expansion of CAR-T cells.
What to do
Avoid chemotherapy in the washout window before leukapheresis and during the period around CAR-T infusion except for planned lymphodepletion. Monitor blood counts and infection closely if later chemotherapy is required.
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 Gemcitabine
Other interactions of Ciltacabtagene autoleucel
Frequently asked questions
Can I take Ciltacabtagene autoleucel with Gemcitabine?
MediHelp rates the interaction as major. Ciltacabtagene autoleucel and Gemcitabine 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. Gemcitabine is a myelosuppressive cytotoxic agent, and CAR-T products such as ciltacabtagene autoleucel cause prolonged cytopenias and immune deficiency. Giving them close together can worsen infection risk and may impair CAR-T cell collection or expansion. Gemcitabine is not intended for use as concurrent therapy around CAR-T infusion.
How serious is the interaction between Ciltacabtagene autoleucel and Gemcitabine?
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 chemotherapy in the washout window before leukapheresis and during the period around CAR-T infusion except for planned lymphodepletion. Monitor blood counts and infection closely if later chemotherapy is required.
What other medicines interact with Gemcitabine?
MediHelp also lists interactions of Gemcitabine with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Gemcitabine page.
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