Drug interactions
Mitoxantrone + Trastuzumab deruxtecan
Severity: Major
Mitoxantrone and Trastuzumab deruxtecan: major interaction.
Last updated Sources: Base de donnees publique des medicaments (France)
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
Both drugs are myelosuppressive, so combining them raises the risk of neutropenia and infection. Both also carry cardiac toxicity concerns, and trastuzumab deruxtecan can cause interstitial lung disease.
What this interaction means in plain words
Mitoxantrone and Trastuzumab deruxtecan 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.
Mitoxantrone belongs to Central Nervous System; Trastuzumab deruxtecan belongs to Oncology.
Why it happens
Additive myelosuppression and potentially additive cardiotoxicity.
What to do
Monitor blood counts and left ventricular ejection fraction regularly, and delay or reduce doses for significant cytopenias. Avoid concurrent use unless specialist oncology supervision is available.
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 Mitoxantrone
Other interactions of Trastuzumab deruxtecan
Frequently asked questions
Can I take Mitoxantrone with Trastuzumab deruxtecan?
MediHelp rates the interaction as major. Mitoxantrone and Trastuzumab deruxtecan 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. Both drugs are myelosuppressive, so combining them raises the risk of neutropenia and infection. Both also carry cardiac toxicity concerns, and trastuzumab deruxtecan can cause interstitial lung disease.
How serious is the interaction between Mitoxantrone and Trastuzumab deruxtecan?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts and left ventricular ejection fraction regularly, and delay or reduce doses for significant cytopenias. Avoid concurrent use unless specialist oncology supervision is available.
What other medicines interact with Mitoxantrone?
MediHelp also lists interactions of Mitoxantrone with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Mitoxantrone page.
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