A Phase 1 Study to Investigate the Safety and Pharmacokinetics of Fosigotifator in Patients With Amyotrophic Lateral Sclerosis

July 30, 2025 updated by: AbbVie

A Randomized, Double-Blind, Placebo-Controlled Study to Assess Safety, Tolerability, and Pharmacokinetics Following Multiple Doses of Fosigotifator in Subjects With Amyotrophic Lateral Sclerosis Followed by an Active Treatment Extension

Fosigotifator is an investigational drug being researched for the treatment of Amyotrophic Lateral Sclerosis. This is an up to 156-week, 2-part study. Part 1 will be a 4-week, randomized, double-blind, placebo-controlled study; Part 2 will be up to a 152-week active treatment extension (ATE) during which all subjects will receive Fosigotifator.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
31

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Canada
    • Alberta
      • Calgary, Alberta, Canada, T2V1P9
        • University of Calgary - Heritage Medical Research Clinic
      • Edmonton, Alberta, Canada, T6G 2G3
        • University of Alberta
    • New Brunswick
      • Fredericton, New Brunswick, Canada, E38 0C7
        • Stan Cassidy Centre for Rehabilitation
    • Ontario
      • London, Ontario, Canada, N6A585
        • London Health Sciences Centre
      • Toronto, Ontario, Canada, M4N 3M5
        • Sunnybrook Research Institute
    • Quebec
      • Montreal, Quebec, Canada, H3A 2B4
        • Montreal Neurological Institute and Hospital
      • Montreal, Quebec, Canada, H2L 4M1
        • Centre hospitalier de l'Université de Montréal (CHUM)
  • United States
    • California
      • Irvine, California, United States, 92868
        • UC Irvine Health ALS and Neuromuscular Center
      • Los Angeles, California, United States, 90048
        • Cedars-Sinai Medical Center
      • San Francisco, California, United States, 94109
        • Forbes Norris MDA/ALS Research and Treatment Center
    • Florida
      • Jacksonville, Florida, United States, 32224
        • Mayo Clinic
    • Maryland
      • Baltimore, Maryland, United States, 21205
        • Johns Hopkins ALS Clinical Trials Unit
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Healey & AMG Center for ALS Research
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Must have an identified, reliable caregiver.
  • Confirmed diagnosis of Familial Amyotrophic Lateral Sclerosis (ALS) or Sporadic ALS.
  • First ALS symptoms occurred <= 36 months before screening.
  • Able to swallow solids.
  • No known active COVID-19 infection at screening.
  • Slow vital capacity (SVC) >= 50% predicted value (for sex, age, ethnic origin, and height) at screening.
  • If taking concomitant standard-of-care medications approved for the treatment of ALS (or their components), subjects must be on a stable dose of the medication(s) for >30 days prior to Baseline in order to enter the study. For edaravone, a stable dose is defined by having completed 2 treatment cycles prior to Baseline.

Exclusion Criteria:

  • History of dementia/severe cognitive problems at screening.
  • History of clinically significant medical conditions (other than ALS) or any other reason, including any physical, psychological, or psychiatric condition that, in the opinion of the Investigator, would compromise the safety or interfere with the subject's participation in the study, or would make the subject an unsuitable candidate to receive study drug, or would put the subject at risk by participating in the study.
  • History of abnormal screening laboratory or imaging results that, in the opinion of the Investigator, are indicative of any significant cardiac, endocrinologic, hematologic, hepatic, immunologic, infectious, metabolic, urologic, pulmonary, gastrointestinal, dermatologic, psychiatric, renal, neurologic, and/or other major disease that would preclude administration of Fosigotifator.
  • Documented active or suspected malignancy or history of any malignancy within the last 5 years except for successfully treated non-melanoma skin cancer or localized carcinoma in situ of the cervix.
  • If female, is known to be pregnant, breastfeeding, considering becoming pregnant, or donating/banking eggs during the study or within 30 days or >5 half-lives (whichever is longer) after the last dose of study drug.
  • If male, plans to donate sperm or father a child during the study or within 30 days after the last dose of study drug.
  • Known to have received any investigational product within 30 days or 5 half-lives of the drug (whichever is longer) prior to the first dose of study drug or is currently enrolled in another clinical study.
  • History of Fosigotifator use prior to participation in this study.
  • Recent (within 6 months prior to Screening) history of drug or alcohol abuse.
  • Previous participation in a stem cell clinical study for treatment of ALS.
  • Current or anticipated use of diaphragmatic pacing during the study period.
  • Tracheostomy or use of non-invasive ventilatory support >= 22 hours a day.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Placebo
Drug: Placebo
Oral
Active Comparator: Fosigotifator Low Dose
Drug: Fosigotifator
Oral
Other Names:
  • ABBV-CLS-7262
Active Comparator: Fosigotifator Medium Dose
Drug: Fosigotifator
Oral
Other Names:
  • ABBV-CLS-7262
Active Comparator: Fosigotifator High Dose
Drug: Fosigotifator
Oral
Other Names:
  • ABBV-CLS-7262

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Safety and Tolerability
Time Frame: Baseline Up to Approximately Day 28
Number of patients with treatment-related adverse events as assessed by CTCAE v4.03
Baseline Up to Approximately Day 28
Pharmacokinetics
Time Frame: Baseline Up to Approximately Day 28
Maximum Plasma Concentration [Cmax]
Baseline Up to Approximately Day 28
Pharmacokinetics
Time Frame: Baseline Up to Approximately Day 28
Area Under the Curve [AUC]
Baseline Up to Approximately Day 28

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
CSF Pharmacokinetics
Time Frame: Baseline Up to Approximately Day 28
Concentration at steady state in CSF
Baseline Up to Approximately Day 28
Safety and Tolerability
Time Frame: Baseline Up to Approximately Week 156
Number of patients with treatment-related adverse events as assessed by CTCAE v4.03
Baseline Up to Approximately Week 156

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
AbbVie

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Calico Life Sciences LLC

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 22, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 15, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 15, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 23, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 30, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 2, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 1, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 30, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • M20-405

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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