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Drug Interactions between gilteritinib and Iclusig

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

PONATinib gilteritinib

Applies to: Iclusig (ponatinib) and gilteritinib

MONITOR: Coadministration with inhibitors of CYP450 3A4 and/or P-glycoprotein (P-gp) may increase the plasma concentrations of gilteritinib, which is a substrate of both the isoenzyme and the efflux transporter. When gilteritinib was coadministered with itraconazole, a potent CYP450 3A4 and P-gp inhibitor, gilteritinib peak plasma concentration (Cmax) and systemic exposure (AUC) increased by approximately 20% and 120%, respectively, compared to administration of gilteritinib alone. Gilteritinib Cmax and AUC increased by approximately 16% and 40%, respectively, when coadministered with fluconazole, a moderate CYP450 3A4 inhibitor.

MANAGEMENT: Caution is advised when gilteritinib is used with CYP450 3A4 and/or P-gp inhibitors. Patients should be monitored for adverse effects such as QT interval prolongation, pancreatitis, liver transaminase and bilirubin elevations, edema, infections and stomatitis, and the gilteritinib dosage adjusted as necessary in accordance with the product labeling.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  2. (2018) "Product Information. Xospata (gilteritinib)." Astellas Pharma US, Inc

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Drug and food interactions

Moderate

PONATinib food

Applies to: Iclusig (ponatinib)

GENERALLY AVOID: Coadministration with grapefruit juice is likely to increase the plasma concentrations of ponatinib, which is primarily metabolized by CYP450 3A4. However, the interaction has not been studied. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit.

MANAGEMENT: The consumption of grapefruit, grapefruit juice, and supplements that contain grapefruit extract should be avoided during treatment with ponatinib.

References

  1. (2012) "Product Information. Iclusig (ponatinib)." Ariad Pharmaceuticals Inc

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Therapeutic duplication warnings

Therapeutic duplication is the use of more than one medicine from the same drug category or therapeutic class to treat the same condition. This can be intentional in cases where drugs with similar actions are used together for demonstrated therapeutic benefit. It can also be unintentional in cases where a patient has been treated by more than one doctor, or had prescriptions filled at more than one pharmacy, and can have potentially adverse consequences.

Duplication

Multikinase inhibitors

Therapeutic duplication

The recommended maximum number of medicines in the 'multikinase inhibitors' category to be taken concurrently is usually one. Your list includes two medicines belonging to the 'multikinase inhibitors' category:

  • gilteritinib
  • Iclusig (ponatinib)

Note: In certain circumstances, the benefits of taking this combination of drugs may outweigh any risks. Always consult your healthcare provider before making changes to your medications or dosage.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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