Tofersen
Generic Name: tofersen
Brand Names:
Qalsody
11 DESCRIPTION Tofersen, an antisense oligonucleotide, is a 20-base residue (20-mer) 5-10-5 MOE gapmer mixed backbone oligonucleotide. Of the nineteen internucleotide linkages, fifteen are 3′-O to 5′-O phosphorothioate diesters, and four are 3′-O to 5′-O phosphate diesters. Ten of the twenty sugar residues are 2-deoxy-D-ribose and the remainder are 2′-O-(2-methoxyethyl)-D-ribose (MOE).
Overview
11 DESCRIPTION Tofersen, an antisense oligonucleotide, is a 20-base residue (20-mer) 5-10-5 MOE gapmer mixed backbone oligonucleotide. Of the nineteen internucleotide linkages, fifteen are 3′-O to 5′-O phosphorothioate diesters, and four are 3′-O to 5′-O phosphate diesters. Ten of the twenty sugar residues are 2-deoxy-D-ribose and the remainder are 2′-O-(2-methoxyethyl)-D-ribose (MOE).
Uses
1 INDICATIONS AND USAGE QALSODY is indicated for the treatment of amyotrophic lateral sclerosis (ALS) in adults who have a mutation in the superoxide dismutase 1 ( SOD1 ) gene. This indication is approved under accelerated approval based on reduction in plasma neurofilament light chain (NfL) observed in patients treated with QALSODY [see Clinical Studies ( 14 )] . Continued approval for this indication may be contingent upon verification of clinical benefit in confirmatory trial(s). QALSODY is an antisense oligonucleotide indicated for the treatment of amyotrophic lateral sclerosis (ALS) in adults who have a mutation in the superoxide dismutase 1 ( SOD1 ) gene.
Dosage
2 DOSAGE AND ADMINISTRATION QALSODY is administered intrathecally ( 2.1 ) Dosing Information ( 2.1 ) Recommended dose: 100 milligrams (15 mL) per administration Initiate QALSODY treatment with 3 loading doses administered at 14day intervals. A maintenance dose should be administered once every 28 days thereafter. Preparation and Administration Instructions ( 2.2 ) Allow to warm to room temperature prior to administration Administer within 4 hours of removal from vial Prior to administration, remove approximately 10 mL of cerebrospinal fluid Administer as an intrathecal bolus injection over 1 to 3 minutes 2.1.
Side Effects
6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed elsewhere in the labeling: Myelitis and/or Radiculitis [see Warnings and Precautions ( 5.1 )] Papilledema and Elevated Intracranial Pressure [see Warnings and Precautions ( 5.2 )] Aseptic Meningitis [see Warnings and Precautions ( 5.3 )] The most common adverse reactions ( ≥ 10% of patients treated with QALSODY and greater than placebo) were pain, fatigue, arthralgia, cerebrospinal fluid white blood cell increased, and myalgia. (Section 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Biogen at 1-877-725-7639 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1.
Warnings
5 WARNINGS AND PRECAUTIONS Myelitis and/ or Radiculitis: Serious events of myelitis and radiculitis have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to the standard of care. ( 5.1 ) Papilledema and Elevated Intracranial Pressure: Serious events of papilledema and elevated intracranial pressure have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to standard of care. ( 5.2 ) Aseptic Meningitis: Serious events of aseptic meningitis have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to standard of care. ( 5.3 ) 5.1. 4 CONTRAINDICATIONS None. None ( 4 )
Pregnancy
8.1. Pregnancy Risk Summary There are no adequate data on developmental risks associated with the use of QALSODY in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. 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.
Storage
16.2. Storage and Handling Store refrigerated between 2°C to 8°C (36°F to 46°F) in the original carton to protect from light. Do not freeze. If no refrigeration is available, QALSODY may be stored in its original carton, protected from light at or below 30°C (86°F) for up to 14 days.
Frequently Asked Questions
What is Tofersen used for?▼
1 INDICATIONS AND USAGE QALSODY is indicated for the treatment of amyotrophic lateral sclerosis (ALS) in adults who have a mutation in the superoxide dismutase 1 ( SOD1 ) gene. This indication is approved under accelerated approval based on reduction in plasma neurofilament light chain (NfL) observed in patients treated with QALSODY [see Clinical Studies ( 14 )] . Continued approval for this indication may be contingent upon verification of clinical benefit in confirmatory trial(s). QALSODY is an antisense oligonucleotide indicated for the treatment of amyotrophic lateral sclerosis (ALS) in adults who have a mutation in the superoxide dismutase 1 ( SOD1 ) gene.
What are the side effects of Tofersen?▼
6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed elsewhere in the labeling: Myelitis and/or Radiculitis [see Warnings and Precautions ( 5.1 )] Papilledema and Elevated Intracranial Pressure [see Warnings and Precautions ( 5.2 )] Aseptic Meningitis [see Warnings and Precautions ( 5.3 )] The most common adverse reactions ( ≥ 10% of patients treated with QALSODY and greater than placebo) were pain, fatigue, arthralgia, cerebrospinal fluid white blood cell increased, and myalgia. (Section 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Biogen at 1-877-725-7639 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1.
Can I take Tofersen during pregnancy?▼
8.1. Pregnancy Risk Summary There are no adequate data on developmental risks associated with the use of QALSODY in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. 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.
What are the important warnings for Tofersen?▼
5 WARNINGS AND PRECAUTIONS Myelitis and/ or Radiculitis: Serious events of myelitis and radiculitis have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to the standard of care. ( 5.1 ) Papilledema and Elevated Intracranial Pressure: Serious events of papilledema and elevated intracranial pressure have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to standard of care. ( 5.2 ) Aseptic Meningitis: Serious events of aseptic meningitis have been reported. Monitor for symptoms; diagnostic workup and treatment should be initiated according to standard of care. ( 5.3 ) 5.1. 4 CONTRAINDICATIONS None. None ( 4 )
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.