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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)

NCT07259980 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 125

Last updated 2026-04-09

No results posted yet for this study

Summary

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.

Conditions

Interventions

DRUG

Tofersen

Administered as specified in the treatment arm.

Sponsors & Collaborators

Principal Investigators

  • Medical Director · Biogen

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-01-02
Primary Completion
2033-12-30
Completion
2033-12-30
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07259980 on ClinicalTrials.gov