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Research Study for Single-Patient Treatment of Cree Leukoencephalopathy/Vanishing White Matter Disease

NCT07272525 · Status: ACTIVE_NOT_RECRUITING · Phase: EARLY_PHASE1 · Type: INTERVENTIONAL · Enrollment: 1

Last updated 2025-12-30

No results posted yet for this study

Summary

Cree Leukoencephalopathy (CLE) is a rare and fatal neurodegenerative disorder predominantly affecting the Cree population in Northern Quebec. Characterized by progressive white matter degeneration, this condition leads to severe neurological impairment and decline, leading to premature death. Despite its significant impact on the affected population, there are currently no effective treatments for CLE. CLE is caused by a single founder pathogenic variant in the EIF2B5 gene and is therefore allelic to VWM.

Fosigotifator (FGT, ABBV-CLS-7262) has been developed and its safety and efficacy are currently being studied in a multi-center Phase 1b/2 clinical trial for Vanishing White Matter (VWM) by Calico in collaboration with AbbVie.

This study aims to provide under compassionate use program access to an investigational drug (FGT) for a patient diagnosed with CLE/VWM disease which has no treatment options currently available. The study will also evaluate the risk/benefit of FGT in slowing or halting the progression of white matter degeneration in a patient with CLE. By targeting the underlying pathophysiological mechanisms of white matter damage, FGT is expected to alleviate neurological symptoms and improve the quality of life for the patient. The outcomes of this study could provide critical insights into the disease's management and pave the way for the development of targeted therapies, ultimately offering hope to a population with limited treatment options.

Conditions

  • Cree Leukoencephalopathy
  • Vanishing White Matter

Interventions

DRUG

Fosigotifator (FGT/ABBV-CLS-7262)

This study aims to provide under compassionate use program access to an investigational drug (FGT) for a patient diagnosed with Cree Leukoencephalopathy (CLE)/Vanishing White Matter (VWM) which has no treatment options currently available. The study will also evaluate the risk/benefit of FGT in slowing or halting the progression of white matter degeneration in a patient with CLE. By targeting the underlying pathophysiological mechanisms of white matter damage, FGT is expected to alleviate neurological symptoms and improve the quality of life for the patient. The outcomes of this study could provide critical insights into the disease's management and pave the way for the development of targeted therapies, ultimately offering hope to a population with limited treatment options.

Sponsors & Collaborators

  • McGill University Health Centre/Research Institute of the McGill University Health Centre

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
4 Months
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-11-14
Primary Completion
2027-11-30
Completion
2027-12-31
FDA Drug
Yes

Countries

  • Canada

Study Locations

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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 NCT07272525 on ClinicalTrials.gov