Wednesday, July 8, 2026

Drug profile · INN

tofersen

tofersen (QALSODY) is a sod1 mrna inhibitor. Route of administration: intrathecal. Current US regulatory status: approved.

FDA: approved EMA: approved PMDA: approved Nervous system (N07) N07XX22
US status approved
Patents linked 0
Pipeline programs 3
News articles 0
Drug details — tofersen
US status
approved
Class
Nervous system (N07)
Route
INTRATHECAL
Patents
0
Programs
3
Data quality
0.84

Quick answer

tofersen (QALSODY) is a sod1 mrna inhibitor. Route of administration: intrathecal. Current US regulatory status: approved.

Key facts

INN tofersen
Brand QALSODY
Mechanism SOD1 mRNA inhibitor
Target SOD1 mRNA
Therapeutic class Nervous system (N07)
Route INTRATHECAL
Formulation SOLUTION
ATC code N07XX22

Mechanism of action

SOD1 mRNA inhibitor

Primary target: SOD1 mRNA

Approval history

Authority Status Date
FDA approved
EMA approved
PMDA approved

Pipeline programs

  1. Tofersen Phase 3 · IONIS PHARMACEUTICALS · ALS Caused by Superoxide Dismutase 1 (SOD1) Mutation
  2. Tofersen Phase 3 · Biogen · Amyotrophic Lateral Sclerosis
  3. Tofersen Phase 3 · IONIS PHARMACEUTICALS · Amyotrophic Lateral Sclerosis

Related & competitor drugs

  1. aripiprazole Nervous system (N05)
  2. brexpiprazole Nervous system (N05)
  3. brivaracetam Nervous system (N03)
  4. bupivacaine Nervous system (N01)
  5. buprenorphine Nervous system (N07)
  6. caffeine citrate Nervous system (N06)

Frequently asked questions

What is tofersen?

tofersen (QALSODY) is a sod1 mrna inhibitor. Route of administration: intrathecal. Current US regulatory status: approved.

What is the brand name for tofersen?

QALSODY is a marketed brand name for tofersen. Check FDA Drugs@FDA for the current US label holder and prescribing information.

What is the US approval status of tofersen?

tofersen has approved status in the United States according to our Drugs@FDA-derived records. Verify on the official FDA label before clinical or commercial decisions.