Interviews and Video Capture in Patients With GM1 Gangliosidosis
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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.
Condition or disease
Other: Natural history
This is a natural history study, for up to 2 years, during which parents or guardians of a GM1 child 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 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.
Scheduled Video Capture [ Time Frame: up to 24 months ]
Caregivers will record GM1 gangliosidosis participants doing some standardized activities. 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 :
Unscheduled Video Capture [ Time Frame: 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 [ Time Frame: up to 24 months ]
Casimir study staff will conduct video interviews with the caregivers at baseline and follow-up timepoints .
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Layout table for eligibility information
Ages Eligible for Study:
Child, Adult, Older Adult
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Study population will consist of children or adolescents
Be the parent or legal guardian of a patient with GM1 gangliosidosis who meets the self-reported criteria listed below for each sub-type or be in possession of past videos of when the child met the criteria:
A patient with early infantile GM1 gangliosidosis who can lift his/her head
A patient with late infantile GM1 gangliosidosis who can sit with hand support
A patient with juvenile GM1 gangliosidosis who can walk with assistance
Parent or legal guardian of a patient with GM1 gangliosidosis who is participating in any ongoing clinical trial at the time of study enrollment or enrolls in a clinical trial during this study.