Olutasidenib
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From MedlinePlus, U.S. National Library of Medicine
Boxed warning
WARNING: DIFFERENTIATION SYNDROME Differentiation syndrome, which can be fatal, can occur with REZLIDHIA treatment. Symptoms may include dyspnea, pulmonary infiltrates/pleuropericardial effusion, kidney injury, hypotension, fever, and weight gain. If differentiation syndrome is suspected, withhold REZLIDHIA and initiate treatment with corticosteroids and hemodynamic monitoring until symptom resolution [see Warnings and Precautions ( 5.1 )] . WARNING: DIFFERENTIATION SYNDROME See full prescribing information for complete boxed warning. Differentiation syndrome, which can be fatal, can occur with REZLIDHIA treatment.
If differentiation syndrome is suspected, withhold REZLIDHIA and initiate corticosteroids and hemodynamic monitoring until symptom resolution. ( 5.1 )
Dosing in kidney impairment
Renal Impairment No dosage modification is recommended for patients with mild to moderate renal impairment (creatinine clearance [CLcr] 30 to <90 mL/min, as estimated by Cockcroft-Gault). The recommended dosage of REZLIDHIA has not been established in patients with severe renal impairment (CLcr 15 to 29 mL/min as estimated by Cockcroft-Gault), kidney failure (CLcr <15 mL/min, as estimated by Cockcroft-Gault), and patients on dialysis [see Clinical Pharmacology] .
Dosing in liver impairment
Hepatic Impairment No dosage modification is recommended for patients with mild (total bilirubin ≤ULN and any AST >ULN or total bilirubin >1 to 1.5 times ULN and any AST) or moderate (total bilirubin >1.5 to 3 times ULN and any AST) hepatic impairment [see Clinical Pharmacology] . In patients with mild or moderate hepatic impairment, closely monitor for increased probability of differentiation syndrome [see Dosage and Administration and Warnings and Precautions] .
The recommended dosage of REZLIDHIA has not been established in patients with severe hepatic impairment (total bilirubin >3 times ULN with any AST) [see Clinical Pharmacology] .
Drug interactions
Check olutasidenib against a medication listLabel text (3 paragraphs)
Strong or moderate CYP3A Inducers: Avoid concomitant use. ( 7.1 ) Sensitive CYP3A Substrates: Avoid concomitant use. Monitor if unavoidable. ( 7.1 )
7.1 Effect of Other Drugs on Olutasidenib Strong or Moderate CYP3A4 Inducers Avoid concomitant use of REZLIDHIA with strong or moderate CYP3A inducers. Olutasidenib is a CYP3A substrate. Concomitant use of REZLIDHIA with a strong CYP3A inducer decreases olutasidenib Cmax and AUC, which may reduce REZLIDHIA efficacy [see Clinical Pharmacology ( 12.3 )] . Concomitant use of REZLIDHIA with a moderate CYP3A inducer may also decrease olutasidenib Cmax and AUC, which may also reduce REZLIDHIA efficacy, based on observations from concomitant use with a strong CYP3A inducer.
7.2 Effect of Olutasidenib on Other Drugs Sensitive CYP3A Substrates Avoid concomitant use of REZLIDHIA with sensitive CYP3A substrates unless otherwise instructed in the substrates prescribing information. If concomitant use is unavoidable, monitor patients for loss of therapeutic effect of these drugs. Olutasidenib induces CYP3A. Concomitant use of REZLIDHIA may decrease plasma concentrations of sensitive CYP3A substrates, which may reduce the substrate’s efficacy [see Clinical Pharmacology ( 12.3 )] .
Contraindications
None. None. ( 4 )
Pregnancy and lactation
Pregnancy
8.1 Pregnancy Risk Summary Based on animal embryo-fetal toxicity studies, REZLIDHIA may cause fetal harm when administered to a pregnant woman. There are no available data on REZLIDHIA use in pregnant women to evaluate for a drug-associated risk. In embryo-fetal development studies, oral olutasidenib resulted in embryo-fetal death and altered fetal growth when administered to pregnant rats and rabbits during the period of organogenesis at exposures up to 10 times and 0.7 times, respectively, the human exposure at the recommended daily dose (see Data ) . Advise pregnant women of the potential risk to a fetus. In the U.S.
general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2%-4% and 15%-20%, respectively. Data Animal Data Olutasidenib was administered twice daily via oral gavage at dose levels of 25, 125, or 250 mg/kg/dose (50, 250, or 500 mg/kg/day) to pregnant rats during organogenesis (gestation days 6-17). An increase in fetal supernumerary rib was observed at the high dose (10 times the AUC at the clinical dose of 150 mg BID).
In a pilot study, administration of olutasidenib orally to pregnant rats during organogenesis resulted in an increase in post-implantation loss at doses of 250 and 450 mg/kg/day (9 and 10 times the AUC at the clinical dose of 150 mg BID). Olutasidenib was administered twice daily via oral gavage at dose levels of 10, 20, or 40 mg/kg/dose (20, 40, or 80 mg/kg/day) to pregnant rabbits during the period of organogenesis (gestation days 7- 20). Maternal toxicity noted as reduced body weight gain occurred at 80 mg/kg/day. An increase in fetal supernumerary rib and increased post-implantation loss occurred at the high dose of 80 mg/kg/day (0.7 times the AUC at the clinical dose of 150 mg BID).
For breastfeeding, also see LactMed (National Library of Medicine), which summarizes milk levels and infant effects.
Supply and cost
Drug shortage status
Recalls (last 24 months)
Therapeutic equivalence (Orange Book)
Price ladder
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