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A Study to Learn More About the Long-Term Safety of Tofersen (Qalsody) in Participants With Superoxide Dismutase 1 (SOD-1) Amyotrophic Lateral Sclerosis (ALS)

A Study to Learn More About the Long-Term Safety of Tofersen (Qalsody) in Participants With Superoxide Dismutase 1 (SOD-1) Amyotrophic Lateral Sclerosis (ALS)

Recruiting
18 years and older
All
Phase N/A

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Overview

In this study, researchers will learn more about the safety of tofersen, also known as Qalsody®. This is a drug available for doctors to prescribe for participant with a certain type of amyotrophic lateral sclerosis, also known as ALS. This type is in participant who have a mutation in the superoxide dismutase 1 gene, also known as SOD-1.

This is known as an "observational" study, which collects health information about study participants without changing their medical care. Participants for this study will be found using 2 different groups of study research centers that help provide clinical care for participant with ALS. These groups are in Europe and the United States and are called:

  • the Precision-ALS programme
  • the ALS/Motor Neuron Disease (MND) Natural History Consortium (NHC)

The main goal of this study is to collect safety information in participants with SOD-1 ALS who were in either of the groups.

The main question researchers want to answer in this study is:

  • What are the characteristics of the participants in this study?
  • How many participants had serious adverse events (SAEs), including ones that affect the brain, spinal cord, or nerves?

An adverse event is a health problem that may or may not be caused by a drug during the study. An adverse event is considered serious when it results in death, is life-threatening, causes lasting problems, or requires hospital care.

Researchers will also learn more about:

  • How many participants develop other health conditions or become pregnant, including how the pregnancy turned out
  • Why and when participants stopped treatment

This study will be done as follows:

  • Participants will be screened to check if they can join the study.
  • Data from the participants' regular visits to their clinic will be collected based on which study research center they are in.
  • Each participant will be in the study until they decide to leave or until death. Currently, the study is planned to last at least 7 years.

Description

The primary objectives of this study are to describe demographic and clinical characteristics of participants with superoxide dismutase 1-amyotropic lateral sclerosis (SOD1-ALS); to describe the frequency of SAEs among participants with SOD1-ALS, including serious neurologic events previously reported in clinical trial participants (e.g., myelitis, radiculitis, aseptic meningitis, increased intracranial pressure, and/or papilloedema).

The secondary objectives of this study are to describe the frequency of new comorbid conditions, pregnancy and pregnancy outcome among participants with SOD1-ALS; to describe the frequency of treatment discontinuation among participants with SOD1-ALS treated with tofersen.

NHC registry has started the data collection while the Treatment Research Initiative to Cure ALS (TRICALS) is yet to start.

Eligibility

Key Inclusion Criteria:

  • Participants with an ALS diagnosis and a confirmed SOD1 mutation from contributing registry networks will be considered for inclusion in the study.

Key Exclusion Criteria:

  • Data collected while a person with SOD1-ALS is participating in an interventional clinical trial (with tofersen or any other investigational medicinal product) will be excluded.

NOTE: Other protocol- defined Inclusion/Exclusion criteria may apply.

Study details
    Amyotrophic Lateral Sclerosis

NCT07259980

Biogen

13 May 2026

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FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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