Resultaterne af in vitro- forsøg med humane levermikrosomer tyder på, at pemetrexed ikke burde forårsage en klinisk signifikant inhibition af den metaboliske clearance af lægemidler, der metaboliseres af CYP3A, CYP2D6, CYP2C9 og CYP1A2.
Results from in vitro studies with human liver microsomes indicated that pemetrexed would not be predicted to cause clinically significant inhibition of the metabolic clearance of drugs metabolised by CYP3A, CYP2D6, CYP2C9, and CYP1A2.