Nusinersen
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From MedlinePlus, U.S. National Library of Medicine
Antisense Oligonucleotide, Survival Motor Neuron-2-directed RNA Interaction
Dosing in kidney impairment
4 CONTRAINDICATIONS None. None. 5 WARNINGS AND PRECAUTIONS Thrombocytopenia and Coagulation Abnormalities: Increased risk for bleeding complications; testing required at baseline and before each dose and as clinically needed ( 5.1 , 2.3 ) Renal Toxicity: Quantitative spot urine protein testing required at baseline and prior to each dose ( 5.2 , 2.3 ) 5.1 Thrombocytopenia and Coagulation Abnormalities Coagulation abnormalities and thrombocytopenia, including acute severe thrombocytopenia, have been observed after administration of some antisense oligonucleotides.
Perform a platelet count and coagulation laboratory testing at baseline and prior to each administration of SPINRAZA and as clinically needed. 5.2 Renal Toxicity Renal toxicity, including potentially fatal glomerulonephritis, has been observed after administration of some antisense oligonucleotides. SPINRAZA is present in and excreted by the kidney [see Clinical Pharmacology] .
Preparation and administration
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Important Preparation and Administration Instructions SPINRAZA is for intrathecal use only. Prepare and use SPINRAZA according to the following steps using aseptic technique. Each vial is intended for single dose only. Use the vial strength that corresponds to the prescribed dose. Do not combine SPINRAZA vials of different strengths and concentrations or use partial vials to achieve the prescribed dose.
Preparation Store SPINRAZA in the carton in a refrigerator until time of use. Allow the SPINRAZA vial to warm to room temperature (25 o C/77 o F) prior to administration. Do not use external heat sources. Inspect the SPINRAZA vial for particulate matter and discoloration prior to administration. Do not administer SPINRAZA if visible particulates are observed or if the liquid in the vial is discolored.
The use of external filters is not required. Withdraw 5 mL of SPINRAZA from the single-dose vial into a syringe and discard unused contents of the vial. Administer SPINRAZA within 4 hours of removal from vial. Administration Consider sedation as indicated by the clinical condition of the patient. Consider ultrasound or other imaging techniques to guide intrathecal administration of SPINRAZA, particularly in younger patients.
Prior to administration, remove 5 mL of cerebrospinal fluid. Administer SPINRAZA as an intrathecal bolus injection over 1 to 3 minutes using a spinal anesthesia needle [see Dosage and Administration]. Do not administer SPINRAZA in areas of the skin where there are signs of infection or inflammation [see Adverse Reactions] .
Contraindications
None. None.
Pregnancy and lactation
Pregnancy
8.1 Pregnancy Risk Summary There are no adequate data on the developmental risk associated with the use of SPINRAZA in pregnant women. When nusinersen was administered by subcutaneous injection to mice throughout pregnancy and lactation, developmental toxicity (long-term neurobehavioral impairment) was observed at all doses tested (see Data ) . In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. The background risk of major birth defects and miscarriage for the indicated population is unknown.
Data Animal Data When nusinersen (0, 3, 10, or 25 mg/kg) was administered subcutaneously to male and female mice every other day prior to and during mating and continuing in females throughout organogenesis, no adverse effects on embryofetal development were observed. Subcutaneous administration of nusinersen (0, 6, 12.6, or 25 mg/kg) to pregnant rabbits every other day throughout organogenesis produced no evidence of embryofetal developmental toxicity.
When nusinersen (1.4, 5.8, or 17.2 mg/kg) was administered to pregnant female mice by subcutaneous injection every other day throughout organogenesis and continuing once every six days throughout the lactation period, adverse neurobehavioral effects (alterations in locomotor activity, learning and memory deficits) were observed when offspring were tested after weaning or as adults. A no-effect level for neurobehavioral impairment was not established.
For breastfeeding, also see LactMed (National Library of Medicine), which summarizes milk levels and infant effects.
Supply and cost
Drug shortage status
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