Interviews and Video Capture in Patients With GM1 Gangliosidosis

Completed

• Conditions: GM1 Gangliosidosis

• Registration Number: NCT04310163
• Lead Sponsor: LYSOGENE

Brief Summary

GM1 gangliosidosis is a rare disease for which there is a limited understanding of disease progression and meaningful outcome measures. In addition, parents report that clinic-based assessments are not always well-suited to capture all the disease features and other metrics that have an impact on the patient and family. To address the methodological challenges of this small, heterogeneous population, this study will collect patient-specific home-based video data and qualitative interviews with caregivers.

Detailed Description

This is a natural history study, for up to 2 years, during which parents or guardians of a child with GM1 gangliosidosis collect video data of patients doing specific daily life activities at baseline and follow-up timepoints throughout the study (3, 6, 12, 18, and 24 months) and/or submit videos taken in the past through a secure smart phone mobile application. The video assessments focus on several hallmarks of GM1 gangliosidosis progression. Caregivers participate in qualitative interviews to provide context for the videos and discuss any changes they observe during the study. Activity videos will be evaluated by expert clinicians using both Clinical Global Impression of Severity (CGI-S) and Clinical Global Impression of Change (CGI-C) scales. The caregiver interviews and clinician-rated activities will inform the patient-specific disease trajectories for each hallmark. There is no treatment or intervention associated with this study.

Study Timeline

• Study First Submitted: 2020-03-12
• Study First Submitted QC: 2020-03-16
• Study First Posted: 2020-03-17
• Study Start: 2020-04-20
• Primary Completion: 2023-05-05
• Study Completion: 2023-05-05
• Status Verified: 2023-06
• Last Update Submitted: 2023-06-07
• Last Update Posted: 2023-06-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 25

Inclusion Criteria

Be or have been the parent, legal guardian, or caretaker of a patient with GM1 gangliosidosis with:

1. Early infantile GM1 gangliosidosis
2. Late infantile GM1 gangliosidosis
3. Juvenile GM1 gangliosidosis who can walk with assistance or possesses past videos of when child could walk with assistance
4. Early or late infantile GM1 gangliosidosis who has passed away, but is in possession of videos documenting the onset and evolution of disease hallmarks of GM1 gangliosidosis

Exclusion Criteria

GM1 gangliosidosis patient that the caregiver cares for is being treated with any experimental medication in a clinical trial setting.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Scheduled Video Capture	up to 24 months	Caregivers will record GM1 gangliosidosis participants doing specific activities of daily living. A list of standardized activities will be provided at baseline and the caregiver will select the activities that are relevant to the GM1 gangliosidosis participant. The activities include: gross motor skills, fine motor skills, caregiver interaction, communication, self-care and visual tracking.

Secondary Outcome Measures

Name	Time	Method
Unscheduled Video Capture	up to 24 months	In addition to the scheduled video captures, spontaneously-captured videos may also be submitted by the caregivers at any time. These spontaneous videos should demonstrate any behavior or ability that the caregivers consider to be a meaningful change for the participant.
Caregiver Interviews	up to 24 months	Casimir study staff will conduct video interviews with the caregivers at baseline and follow-up timepoints .

Trial Locations

Locations (1)

Casimir Trials; 🇺🇸 Plymouth, Massachusetts, United States