Zolgensma

Structured Monograph

Indications and usage 1 INDICATIONS AND USAGE ZOLGENSMA is an adeno-associated virus (AAV) vector-based gene therapy indicated for the treatment of pediatric patients less than 2 years of age with spinal muscular atrophy (SMA) with bi-allelic mutations in the survival motor neuron 1 (SMN1) gene. Limitations of Use The safety and effectiveness of repeat administration of ZOLGENSMA have not been evaluated [see Adverse Reactions ( 6.2 )] . The use of ZOLGENSMA in patients with advanced SMA (e.g., complete paralysis of limbs, permanent ventilator-dependence) has not been evaluated [see Clinical Studies ( 14 )] . ZOLGENSMA is an adeno-associated virus (AAV) vector-based gene therapy indicated for the treatment of pediatric patients less than 2 years of age with spinal muscular atrophy (SMA) with bi-allelic mutations in the survival motor neuron 1 ( SMN1) gene. ( 1 ) Limitations of Use The safety and effectiveness of repeat administration of ZOLGENSMA have not been evaluated. ( 1 , 6.2 ) The use of ZOLGENSMA in patients with advanced SMA (e.g., complete paralysis of limbs, permanent ventilator dependence) has not been evaluated. ( 1 , 14 ) Dosage and administration 2 DOSAGE AND ADMINISTRATION For single-dose intravenous infusion only. For single-dose intravenous infusion only ( 2 ). The recommended dosage of ZOLGENSMA is 1.1 × 10 14 vector genomes (vg) per kg of body weight. ( 2.1 ) Administer ZOLGENSMA as an intravenous infusion over 60 minutes. ( 2.1 , 2.3 ) Postpone ZOLGENSMA in patients with infections until the infection has resolved and the patient is clinically stable. ( 2.1 , 5.2 ) Starting one day prior to ZOLGENSMA infusion, administer systemic corticosteroids equivalent to oral prednisolone at 1 mg/kg of body weight per day for a total of 30 days. At the end of the 30-day period, check liver function by clinical examination and by laboratory testing. For patients with unremarkable findings, taper the corticosteroid dose gradually over the next 28 days. If liver function abnormalities persist, continue systemic corticosteroids (equivalent to oral prednisolone at 1 mg/kg/day) until findings become unremarkable, and then taper the corticosteroid dose gradually over the next 28 days or longer if needed. Do not stop systemic corticosteroids abruptly. ( 2.1 ) If liver function abnormalities continue to persist ≥ 2 × ULN after the 30-day period of systemic corticosteroids, promptly consult a pediatric gastroenterologist or hepatologist. ( 2.1 ) 2.1 Dose and Administration The recommended dose of ZOLGENSMA is 1.1 × 10 14 vector genomes per kilogram (vg/kg) of body weight. Table 1: Dosing Patient weight range (kg) Dose volume a (mL) a Dose volume is calculated using the upper limit of the patient weight range for pediatric patients less than 2 years of age between 2.6 kg and 21.0 kg. 2.6 – 3.0 16.5 3.1 – 3.5 19.3 3.6 – 4.0 22.0 4.1 – 4.5 24.8 4.6 – 5.0 27.5 5.1 – 5.5 30.3 5.6 – 6.0 33.0 6.1 – 6.5 35.8 6.6 – 7.0 38.5 7.1 – 7.5 41.3 7.6 – 8.0 44.0 8.1 – 8.5 46.8 8.6 – 9.0 49.5 9.1 – 9.5 52.3 9.6 – 10.0 55.0 10.1 – 10.5 57.8 10.6 – 11.0 60.5 11.1 – 11.5 63.3 11.6 – 12.0 66.0 12.1 – 12.5 68.8 12.6 – 13.0 71.5 13.1 – 13.5 74.3 13.6 – 14.0 77.0 14.1 – 14.5 79.8 14.6 – 15.0 82.5 15.1 – 15.5 85.3 15.6 – 16.0 88.0 16.1 – 16.5 90.8 16.6 – 17.0 93.5 17.1 – 17.5 96.3 17.6 – 18.0 99.0 18.1 – 18.5 101.8 18.6 – 19.0 104.5 19.1 – 19.5 107.3 19.6 – 20.0 110.0 20.1 – 20.5 112.8 20.6 – 21.0 115.5 Prior to ZOLGENSMA infusion: Due to the increased risk of serious systemic immune response, administer ZOLGENSMA to patients who are clinically stable in their overall baseline health status (e.g., hydration and nutritional status, absence of infection) prior to infusion. Postpone ZOLGENSMA in patients with infections until the infection has resolved and the patient is clinically stable. Clinical signs or symptoms of infection should not be evident at the time of ZOLGENSMA infusion [see Warnings and Precautions ( 5.2 , 5.4 ), Patient Counseling Information ( 17 )]. Assess liver function [see Boxed Warning, Dosage and Administration ( 2.3 ), Warnings and Precautions ( 5.1 ), Use in Specific Populations ( 8.6 )]. Obtain creatinine and complete blood count (including hemoglobin and platelet count) [see Dosage and Administration ( 2.3 ), Warnings and Precautions ( 5.3 , 5.4 )] . Perform baseline testing for the presence of anti-AAV9 antibodies [see Dosage and Administration ( 2.3 ), Adverse Reactions ( 6.2 )]. One day prior to ZOLGENSMA infusion, begin administration of systemic corticosteroids equivalent to oral prednisolone at 1 mg per kg of body weight per day (mg/kg/day) for a total of 30 days. Administer ZOLGENSMA as a single-dose intravenous infusion through a venous catheter. Follow the steps below for infusion: 1. Place a primary catheter into a vein (generally a peripheral vein in the arm or leg). Insertion of a back-up catheter is recommended. 2. Program syringe pump for saline priming, or prime tubing manually with saline. 3. Adm