RECENT MAJOR CHANGES SECTION

RECENT MAJOR CHANGES

Indications and Usage, Limitations of Use (1.3) 7/2019

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DOSAGE & ADMINISTRATION SECTION

2 DOSAGE AND ADMINISTRATION

2.1 Transfusional Iron Overload

Deferasirox tablets therapy should only be considered when a patient has evidence of chronic transfusional iron overload. The evidence should include the transfusion of at least 100 mL/kg of packed red blood cells (e.g., at least 20 units of packed red blood cells for a 40 kg person or more in individuals weighing more than 40 kg), and a serum ferritin consistently greater than 1000 mcg/L.

Prior to starting therapy, or increasing dose, evaluate:

• Serum ferritin level
• Baseline renal function:

o Obtain serum creatinine in duplicate (due to variations in measurements)

o Calculate the estimated glomerular filtration rate (eGFR). Use a prediction equation appropriate for adult patients (e.g., CKD-EPI, MDRD method) and in pediatric patients (e.g., Schwartz equations).

o Obtain urinalyses and serum electrolytes to evaluate renal tubular function [see Dosage and Administration (2.4), Warnings and Precautions (5.1)].

• Serum transaminases and bilirubin [see Dosage and Administration (2.4), Warnings and Precautions (5.2)]
• Baseline auditory and ophthalmic examinations [see Warnings and Precautions (5.10)]

Initiating Therapy:

The recommended initial dose of deferasirox tablets for patients 2 years of age and older with eGFR greater than 60 ml/min/1.73 m2 is 14 mg per kg body weight orally, once daily. Calculate doses (mg per kg per day) to the nearest whole tablet. Changes in weight of pediatric patients over time must be taken into account when calculating the dose.

During Therapy:

• Monitor serum ferritin monthly and adjust the dose of deferasirox tablets, if necessary, every 3 to 6 months based on serum ferritin trends.
• Use the minimum effective dose to achieve a trend of decreasing ferritin
• Make dose adjustments in steps of 3.5 or 7 mg per kg and tailor adjustments to the individual patient’s response and therapeutic goals.
• In patients not adequately controlled with doses of 21 mg per kg (e.g., serum ferritin levels persistently above 2500 mcg/L and not showing a decreasing trend over time), doses of up to 28 mg per kg may be considered. Doses above 28 mg per kg are not recommended [see Warnings and Precautions (5.6)].
• Adjust dose based on serum ferritin levels

o If the serum ferritin falls below 1000 mcg/L at 2 consecutive visits, consider dose reduction, especially if the deferasirox tablets dose is greater than 17.5 mg/kg/day [see Adverse Reactions (6.1)].

o If the serum ferritin falls below 500 mcg/L, interrupt deferasirox tablets therapy and continue monthly monitoring.

o Evaluate the need for ongoing chelation therapy for patients whose conditions no longer require regular blood transfusions.

o Use the minimum effective dose to maintain iron burden in the target range [see Warnings and Precautions (5.6)].

• Monitor blood counts, liver function, renal function and ferritin monthly [see Warnings and Precautions (5.1, 5.2, 5.4)].
• Interrupt deferasirox tablets for pediatric patients who have acute illnesses, which can cause volume depletion, such as vomiting, diarrhea, or prolonged decreased oral intake, and monitor more frequently. Resume therapy as appropriate, based on assessments of renal function, when oral intake and volume status are normal [see Dosage and Administration (2.4, 2.5), Warnings and Precautions (5.1), Use in Specific Populations (8.4), Clinical Pharmacology (12.3)].

Additional pediatric use information is approved for Novartis Pharmaceuticals Corporation’s JADENU® (deferasirox) tablets. However, due to Novartis Pharmaceuticals Corporation’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.

2.3 Administration

Swallow deferasirox tablets once daily with water or other liquids, preferably at the same time each day. Take deferasirox tablets on an empty stomach or with a light meal (contains less than 7% fat content and approximately 250 calories). Examples of light meals include 1 whole wheat English muffin, 1 packet jelly (0.5 ounces), and skim milk (8 fluid ounces) or a turkey sandwich (2 oz. turkey on whole wheat bread w/lettuce, tomato, and 1 packet mustard). Do not take deferasirox tablets with aluminum-containing antacid products [see Drug Interactions (7.1)]. For patients who have difficulty swallowing whole tablets, deferasirox tablets may be crushed and mixed with soft foods (e.g., yogurt or apple sauce) immediately prior to use and administered orally. Commercial crushers with serrated surfaces should be avoided for crushing a single 90 mg tablet. The dose should be immediately and completely consumed and not stored for future use.

For patients who are currently on chelation therapy with deferasirox tablets for oral suspension and converting to deferasirox tablets, the dose should be about 30% lower, rounded to the nearest whole tablet. The table below provides additional information on dosing conversion to deferasirox tablets.

Additional pediatric use information is approved for Novartis Pharmaceuticals Corporation’s JADENU® (deferasirox) tablets. However, due to Novartis Pharmaceuticals Corporation’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.

2.4 Use in Patients with Baseline Hepatic or Renal Impairment

Patients with Baseline Hepatic Impairment

Mild (Child-Pugh A) Hepatic Impairment: No dose adjustment is necessary.

Moderate (Child-Pugh B) Hepatic Impairment: Reduce the starting dose by 50%.

Severe (Child-Pugh C) Hepatic Impairment: Avoid deferasirox tablets [see Warnings and Precautions (5.2), Use in Specific Populations (8.7)].

Patients with Baseline Renal Impairment

Do not use deferasirox tablets in adult or pediatric patients with eGFR less than 40 mL/min/1.73 m2 [see Dosage and Administration (2.5), Contraindications (4)].

For patients with renal impairment (eGFR 40 to 60 mL/min/1.73 m2), reduce the starting dose by 50% [see Use in Specific Populations (8.6)].

Exercise caution in pediatric patients with eGFR between 40 and 60 mL/minute/1.73 m2. If treatment is needed, use the minimum effective dose and monitor renal function frequently. Individualize dose titration based on improvement in renal injury [see Use in Specific Populations (8.6)].

2.5 Dose Modifications for Decreases in Renal Function while on Deferasirox

Tablets

Deferasirox tablet is contraindicated in patients with eGFR less than 40 mL/minute/1.73 m2 [see Contraindications (4)].

For decreases in renal function while receiving deferasirox tablets [see Warnings and Precautions (5.1)] , modify the dose as follows:

Transfusional Iron Overload

Adults:

• If the serum creatinine increases by 33% or more above the average baseline measurement, repeat the serum creatinine within 1 week, and if still elevated by 33% or more, reduce the dose by 7 mg per kg.

Pediatric Patients (ages 2 years to 17 years):

• Reduce the dose by 7 mg per kg if eGFR decreases by greater than 33% below the average baseline measurement and repeat eGFR within 1 week

• Interrupt deferasirox tablets for acute illnesses, which can cause volume depletion, such as vomiting, diarrhea, or prolonged decreased oral intake, and monitor more frequently. Resume therapy as appropriate, based on assessments of renal function, when oral intake and volume status are normal. Avoid use of other nephrotoxic drugs [see Warnings and Precautions (5.1)].

• In the setting of decreased renal function, evaluate the risk benefit profile of continued deferasirox tablets use. Use the minimum effective deferasirox tablets dose and monitor renal function more frequently, by evaluating tubular and glomerular function. Titrate dosing based on renal injury. Consider dose reduction or interruption and less nephrotoxic therapies until improvement of renal function. If signs of renal tubular or glomerular injury occur in the presence of other risk factors such as volume depletion, reduce or interrupt deferasirox tablets to prevent severe and irreversible renal injury [see Warnings and Precautions (5.1)].

All Patients (regardless of age):

• Discontinue therapy for eGFR less than 40 mL/min/1.73 m2[see Contraindications (4)].

Additional pediatric use information is approved for Novartis Pharmaceuticals Corporation’s JADENU® (deferasirox) tablets. However, due to Novartis Pharmaceuticals Corporation’s marketing exclusivity rights, this drug product is not labeled with that pediatric information.

2.6 Dose Modifications Based on Concomitant Medications

UDP-glucuronosyltransferases (UGT) Inducers

Concomitant use of UGT inducers decreases systemic exposure. Avoid the concomitant use of strong UGT inducers (e.g., rifampicin, phenytoin, phenobarbital, ritonavir). If you must administer deferasirox tablets with a strong UGT inducer, consider increasing the initial dose by 50%, and monitor serum ferritin levels and clinical responses for further dose modification [see Dosage and Administration (2.1), Drug Interactions (7.5)].

Bile Acid Sequestrants

Concomitant use of bile acid sequestrants decreases systemic exposure. Avoid the concomitant use of bile acid sequestrants (e.g., cholestyramine, colesevelam, colestipol). If you must administer deferasirox tablets with bile acid sequestrants, consider increasing the initial dose by 50%, and monitor serum ferritin levels and clinical responses for further dose modification [see Dosage and Administration (2.1), Drug Interactions (7.6)].

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BOXED WARNING SECTION

**WARNING: RENAL FAILURE, HEPATIC FAILURE, AND GASTROINTESTINAL

HEMORRHAGE**

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