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Drug Interactions between aminoglutethimide and tucatinib

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

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Interactions between your drugs

Moderate

aminoglutethimide tucatinib

Applies to: aminoglutethimide and tucatinib

MONITOR: Coadministration with CYP450 3A4 inducers may decrease the plasma concentrations of tucatinib, which is primarily metabolized by CYP450 2C8 and to a lesser extent by CYP450 3A4. When rifampin (600 mg once daily), a potent CYP450 3A4 and moderate CYP450 2C8 inducer, was administered with a single tucatinib dose of 300 mg, tucatinib peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by 40% and 50%, respectively. No data are available for other, less potent CYP450 3A4 inducers.

MANAGEMENT: The potential for diminished pharmacologic effects of tucatinib should be considered during coadministration with CYP450 3A4 inducers. Alternative treatments may be required if an interaction is suspected.

References (1)
  1. (2020) "Product Information. Tukysa (tucatinib)." Seattle Genetics Inc

Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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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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