Drug Interaction Report
2 potential interactions and/or warnings found for the following 2 drugs:
- dabrafenib
- atrasentan
Interactions between your drugs
dabrafenib atrasentan
Applies to: dabrafenib, atrasentan
GENERALLY AVOID: Coadministration with potent or moderate inducers of CYP450 3A4 may significantly decrease the plasma concentrations of atrasentan, which is primarily metabolized by the isoenzyme. In drug interaction studies, coadministration with the potent CYP450 3A4 inducer rifampin reduced atrasentan (single dose, 10 mg) trough plasma concentration (Ctrough) by 90%. Rifampin is also an inhibitor of the hepatic influx transporters organic anion transporting polypeptides (OATP) 1B1 and 1B3, of which atrasentan is a substrate. No data are available about potent or moderate CYP450 3A4 inducers that do not inhibit OATP1B1 and/or 1B3, but greater decreases in atrasentan exposure may occur.
MANAGEMENT: Concomitant use of atrasentan with potent or moderate CYP450 3A4 inducers should generally be avoided.
References (1)
- (2025) "Product Information. Vanrafia (atrasentan)." Novartis Pharmaceuticals
Drug and food interactions
dabrafenib food
Applies to: dabrafenib
ADJUST DOSING INTERVAL: Food may reduce as well as delay the absorption of dabrafenib. In study subjects, administration of dabrafenib with a high-fat meal decreased peak plasma concentration (Cmax) and systemic exposure (AUC) by 51% and 31%, respectively, and delayed median Tmax by approximately 3.6 hours compared to administration in the fasted state.
MANAGEMENT: Dabrafenib should be taken at least 1 hour before or 2 hours after a meal.
References (1)
- (2013) "Product Information. Tafinlar (dabrafenib)." GlaxoSmithKline
Therapeutic duplication warnings
No duplication 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.
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
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Further information
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