Potentiated & prolonged myelosuppressive toxicity w/ other anticancer drugs including DNA damaging agents. Use w/ caution when co-administered w/ vaccines or immunosuppressant agents. Increased mean C
max & mean AUC w/ strong (eg, itraconazole, telithromycin, clarithromycin, PI boosted w/ ritonavir or cobicistat, boceprevir, telaprevir) or moderate (eg, erythromycin, diltiazem, fluconazole, verapamil) CYP3A inhibitors. Not recommended w/ grapefruit juice. Decreased mean C
max & mean AUC w/ strong CYP3A inducers (eg, phenytoin, rifampicin, rifapentine, carbamazepine, nevirapine, phenobarb, St. John's wort). Not recommended w/ moderate to strong CYP3A inducers (eg, efavirenz, rifabutin). Increased exposure of sensitive CYP3A substrates or substrates w/ narrow therapeutic index (eg, simvastatin, cisapride, cyclosporine, ergot alkaloids, fentanyl, pimozide, sirolimus, tacrolimus & quetiapine); substrates of BCRP (eg, methotrexate, rosuvastatin), OATP1B1 (eg, bosentan, glibenclamide, repaglinide, statins, valsartan), OCT1 (eg, metformin), OCT2 (eg, serum creatinine), OAT3 (eg, furosemide, methotrexate), MATE1 (eg, metformin) & MATE2K (eg, metformin). May reduce exposure of CYP2B6, CYP2C9, CYP2C19 & P-gp substrates. May reduce efficacy of hormonal contraceptives. Possible interaction w/ P-gp substrates (eg, simvastatin, pravastatin, dabigatran, digoxin, colchicine).