Drug interactions
Avapritinib + Netupitant-palonosetron
Severity: Major
Avapritinib and Netupitant-palonosetron: 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
Netupitant is a moderate CYP3A4 inhibitor and can increase avapritinib concentrations. This raises the risk of avapritinib toxicity such as cognitive effects, intracranial hemorrhage and edema.
What this interaction means in plain words
Avapritinib and Netupitant-palonosetron 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.
Avapritinib belongs to Oncology; Netupitant-palonosetron belongs to Gastrointestinal Tract.
Why it happens
Inhibition of CYP3A4-mediated avapritinib metabolism by netupitant.
What to do
Avoid the combination; use an antiemetic regimen without CYP3A4 inhibition. If unavoidable, follow avapritinib labeling for dose reduction with CYP3A inhibitors and monitor for adverse effects.
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 Netupitant-palonosetron
- Apomorphine + Netupitant-palonosetron Contraindicated
- Flibanserin + Netupitant-palonosetron Contraindicated
- Apalutamide + Netupitant-palonosetron Major
- Carbamazepine + Netupitant-palonosetron Major
- Cobimetinib + Netupitant-palonosetron Major
- Encorafenib + Netupitant-palonosetron Major
Other interactions of Avapritinib
Frequently asked questions
Can I take Avapritinib with Netupitant-palonosetron?
MediHelp rates the interaction as major. Avapritinib and Netupitant-palonosetron 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. Netupitant is a moderate CYP3A4 inhibitor and can increase avapritinib concentrations. This raises the risk of avapritinib toxicity such as cognitive effects, intracranial hemorrhage and edema.
How serious is the interaction between Avapritinib and Netupitant-palonosetron?
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 the combination; use an antiemetic regimen without CYP3A4 inhibition. If unavoidable, follow avapritinib labeling for dose reduction with CYP3A inhibitors and monitor for adverse effects.
What other medicines interact with Netupitant-palonosetron?
MediHelp also lists interactions of Netupitant-palonosetron with, for example, Apomorphine, Flibanserin, Apalutamide. The full list is on the Netupitant-palonosetron page.
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