Generic Name and Formulations:
Deferasirox 125mg, 250mg, 500mg; tabs for oral susp.
Novartis Pharmaceuticals Corp
Indications for EXJADE:
Chronic iron overload due to blood transfusions in patients ≥2yrs of age. Chronic iron overload in patients ≥10yrs of age with non-transfusion dependent thalassemia (NTDT) syndromes and with a liver iron concentration (LIC) of at least 5mg Fe per gram of dry weight and a serum ferritin >300 mcg/L.
Adults and Children:
Calculate dose to nearest whole tab. Take on empty stomach at least 30 mins before food. Do not chew or swallow tabs; disperse completely in water, orange juice or apple juice; drink immediately; resuspend remainder and drink. Transfusional iron overload: <2yrs: not established. ≥2yrs: initially 20mg/kg once daily; may adjust dose by 5 or 10mg/kg every 3–6 months based on serum ferritin levels or response. If inadequate control at 30mg/kg, may consider increasing up to max 40mg/kg. Adjust dose if severe skin rashes occur; consider suspending therapy if serum ferritin <500mcg/L. NTDT syndromes: <10yrs: not established. ≥10yrs: initially 10mg/kg once daily; if baseline LIC>15mg Fe/g dw, consider increasing dose to 20mg/kg after 4 weeks. Suspend therapy if serum ferritin <300mcg/L and obtain LIC to determine whether it has fallen to <3mg Fe/g dw. After 6 months, if LIC remains >7mg Fe/g dw, increase dose to max 20mg/kg/day. If after 6 months, LIC is 3–7mg Fe/g dw, continue with max 10mg/kg/day. When LIC is <3mg Fe/g dw, interrupt treatment and continue to monitor LIC. Restart when LIC rises again to >5mg Fe/g dw. Adjustments based on serum creatinine: see full labeling. Hepatic impairment: moderate: reduce dose by 50%; severe: avoid.
CrCl <40mL/min or serum creatinine >2x age-appropriate ULN. Poor performance status. High risk myelodysplastic syndromes. Advanced malignancies. Platelets <50x109/L.
May cause renal or hepatic failure, GI hemorrhage; may be fatal (monitor). Hepatic or renal impairment. Advanced disease or co-morbid conditions. Obtain baseline serum ferritin level, monitor monthly and adjust dose accordingly. Measure serum creatinine and CrCl in duplicate before starting therapy; monitor weekly during 1st month then at least monthly thereafter; more frequently if creatinine levels increase. Monitor for proteinuria monthly. Measure serum transaminases, bilirubin before initiating therapy then every 2 weeks during 1st month, then monthly. Monitor blood counts; interrupt therapy if cytopenias develop. For NTDT syndromes: obtain LIC by liver biopsy prior to starting therapy, monitor LIC every 6 months. Do baseline auditory and ocular exams, then every 12 months; if disturbances occur, adjust dose or suspend therapy. Elderly. Pregnancy (Cat.C). Nursing mothers: not recommended.
Avoid aluminum-containing antacids, bile acid sequestrants (eg, cholestyramine, colesevelam, colestipol), or UGT inducers (eg, rifampicin, phenytoin, phenobarbital, ritonavir); if co-administration necessary consider increasing initial Exjade dose by 50% and monitor serum ferritin levels and clinical responses. Caution with drugs that have ulcerogenic or hemorrhagic potential (eg, NSAIDs, corticosteroids, oral bisphosphonates, anticoagulants) or drugs metabolized by CYP3A4 (eg, cyclosporine, simvastatin, hormonal contraceptives). Potentiates repaglinide (consider reducing repaglinide dose); monitor blood glucose levels. Caution with other CYP2C8 substrates (eg, paclitaxel). Avoid concomitant theophylline or other CYP1A2 substrates with narrow therapeutic index. Concomitant other iron chelation therapy: not recommended.
Iron chelating agent.
Diarrhea, vomiting, nausea, abdominal pain, elevated serum creatinine, rash; renal or hepatic impairment/failure (may be fatal), GI hemorrhage, cytopenias (eg, agranulocytosis, neutropenia, thrombocytopenia, anemia), hypersensitivity reactions, severe skin reactions (eg, Stevens-Johnson syndrome, toxic epidermal necrolysis, erythema multiforme); discontinue if occurs and do not restart.
Hepatic (UGT1A1); ~99% protein bound.
Fecal, renal (minor).