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Drug Interactions between idarubicin and neratinib

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

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Interactions between your drugs

Moderate

IDArubicin neratinib

Applies to: idarubicin and neratinib

MONITOR: Coadministration with inhibitors of P-glycoprotein (P-gp) may increase the plasma concentrations of daunorubicin and idarubicin, both of which are substrates of the efflux transporter also known as ABCB1 or MDR1. The interaction has been studied with cyclosporine, a potent P-gp inhibitor, in attempt to overcome multidrug resistance in MDR1-overexpressing tumors. In a randomized study to test whether cyclosporine can enhance the antileukemia effect of anthracyclines, cyclosporine was found to significantly reduce the frequency of resistance to induction chemotherapy consisting of sequential cytarabine and daunorubicin (31% vs. 47%). The addition of cyclosporine also increased relapse-free and overall survival, particularly in patients with moderate or high P-gp expression. Pharmacokinetically, steady-state mean serum concentrations of daunorubicin and its active metabolite, daunorubicinol, were significantly higher (approximately 2-fold and 4-fold, respectively) in patients receiving cyclosporine. Although there was no significant difference in the frequency or severity of stomatitis or renal toxicity (as measured by creatinine elevation), grade 4 hyperbilirubinemia and grade 3 nausea occurred more frequently in patients receiving cyclosporine than in controls (31% vs. 4% and 11% vs. 3%, respectively). In a pharmacokinetic study of 27 patients with acute myelogenous leukemia receiving induction chemotherapy with idarubicin and cytarabine, the systemic exposure (AUC) to idarubicin and idarubicinol was increased by 77% and 182%, respectively, in patients administered cyclosporine 10 mg/kg daily compared to controls due to a 40% reduction in total body clearance. The interaction was also reported in another study in which increases in the AUC of idarubicin and idarubicinol were associated with increased levels of toxicity.

MANAGEMENT: Caution is advised if daunorubicin or idarubicin is prescribed in combination with a P-gp inhibitor. Patients should be closely monitored for increased adverse effects including cardiotoxicity and myelosuppression.

References

  1. "Multum Information Services, Inc. Expert Review Panel"
  2. (2001) "Product Information. Cerubidine (daunorubicin)." Wyeth-Ayerst Laboratories
  3. (2001) "Product Information. Idamycin (idarubicin)." Pharmacia and Upjohn
  4. (2001) "Product Information. Daunoxome (daunorubicin liposomal)." Nexstar Pharmaceuticals Inc
View all 4 references

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Drug and food interactions

Major

neratinib food

Applies to: neratinib

GENERALLY AVOID: Grapefruit, grapefruit juice, grapefruit hybrids, pomelos, star-fruit, and Seville oranges may increase the plasma concentrations of neratinib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in these fruits. Inhibition of hepatic CYP450 3A4 may also contribute. In a study consisting of 24 healthy subjects, neratinib peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 3.2- and 4.8-fold, respectively, when a single 240 mg oral dose of neratinib was administered with the potent CYP450 3A4 inhibitor ketoconazole (400 mg once daily for 5 days). Also, mean apparent oral clearance of neratinib decreased by approximately 75% and mean elimination half-life increased by 54%. The interaction has not been studied with these fruits. In general, for example, the effect of grapefruit juice is concentration-, dose- and preparation-dependent, and can vary widely among brands. Certain preparations of grapefruit juice (e.g., high dose, double strength) have sometimes demonstrated potent inhibition of CYP450 3A4, while other preparations (e.g., low dose, single strength) have typically demonstrated moderate inhibition. Increased exposure to neratinib may increase adverse effects such as diarrhea, nausea, vomiting, abdominal pain, stomatitis, anorexia, and hepatotoxicity.

Food with a high fat content enhances the oral bioavailability of neratinib. In healthy volunteers, administration of neratinib 240 mg with a high-fat meal (approximately 55% fat; 31% carbohydrate; 14% protein) increased neratinib peak plasma concentration (Cmax) and systemic exposure (AUC) by 1.7- and 2.2-fold, respectively, compared to administration under fasting conditions. By contrast, a standard breakfast (approximately 50% carbohydrate; 35% fat; 15% protein) increased the Cmax and AUC of neratinib by 1.2- and 1.1-fold, respectively.

MANAGEMENT: The manufacturer recommends administering neratinib with food at approximately the same time every day. Patients should avoid consumption of grapefruit, grapefruit juice, grapefruit hybrids, pomelos, star-fruit, and Seville oranges during treatment with neratinib.

References

  1. Cerner Multum, Inc. "Australian Product Information."
  2. Abbas R, Hug BA, Leister C, Burns J, Sonnichsen D (2011) "Pharmacokinetics of oral neratinib during co-administration of ketoconazole in healthy subjects." Br J Clin Pharmacol, 71, p. 522-7
  3. (2017) "Product Information. Nerlynx (neratinib)." Puma Biotechnology, Inc.

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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

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