An observational study in Choroideremia, sponsored by Biogen. Completed at 8 sites in United States. Open to male participants. Per ClinicalTrials.gov, last updated 2021-10-14.
Sponsored by Biogen · Observational
The primary objectives of this study are to describe disease progression and severity by age in participants with CHM, to assess health-related quality-of-life, resource utilization and work productivity, and to assess quality-of-life, work productivity, and impact on daily activities in caregivers of participants with CHM at different stages of disease progression.
29 studies on the registry are indexed under Choroideremia; 6 are open to participants now.
Browse Choroideremia studies →Biogen is the lead sponsor of 494 studies on the registry; 22 are open to participants now.
Of its 98 completed or terminated interventional studies of FDA-regulated products, 49 (50%) have results posted.
Counted across the registry records on this site, refreshed daily.
Participants who have been diagnosed with CHM. A minimum of approximately 50% of the participants will have an associated caregiver who will participate.
Participating physicians will enroll participants for inclusion in the study.
Key Inclusion Criteria:
Physician Participants
Patient Participants
Key Exclusion Criteria:
Physician Participants
a. Participating physicians must not be affiliated with an approved management organization.
Patient Participants
a. Participants who received gene therapy or any other investigational treatment and participants who do not agree to informed consent.
NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.
Participants who have been diagnosed with CHM will be enrolled.
Other: No Intervention
Administered as specified in the treatment arm.
Time to Disease Progression by Age in Participants with CHM
Time frame: Up to 8 months
Best Corrected Visual Acuity by Age
Best corrected visual acuity will be used as an indicator to assess disease severity.
Time frame: Up to 8 months
Participants with CHM: EuroQol- 5 Dimension- 5 Level (EQ-5D-5L) Score
EQ-5D is a self-report measure of health for clinical and economic appraisal. Participants complete the 5-level (no problems, slight problems, moderate problems, severe problems, and extreme problems), 5-dimension (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) questionnaire concerning their current health state. A unique EQ-5D-5L health state scale ranges from 0 to 100 and is defined by combining 1 level from each of the 5 dimensions. Participants indicate their current health status by marking on a continuum ranging from 100 (best imaginable health state) to 0 (worst imaginable health state). The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Participants with CHM: Health Utilities Index (HUI3) Score
Health Utilities Index (HUI3) is a family of generic preference-based systems for measuring comprehensive health status and health-related quality of life (HRQL). HUI® provides descriptive evidence on multiple dimensions of health status, a score for each dimension of health, and a HRQL score for overall health. Health dimensions include vision, hearing, speech, ambulation/mobility, pain, dexterity, self-care, emotion and cognition. Each dimension has 3- 6 levels. HUI® systems describe almost a million unique health states. HUI3 score ranges from 0.36 (worst) to 1 (best). The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Participants with CHM: Work Productivity and Activity Impairment (WPAI) Score
The Work Productivity and Activity Impairment (WPAI) is a 6 questionnaire scale used to measure lost work productivity and impairment in daily activities over the past seven days. The WPAI yields four types of scores: 1. Absenteeism 2. Presenteesism 3. Work productivity loss 4. Activity Impairment, ranging from 0-100%. Higher numbers indicate greater impairment and less productivity. The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Participants with CHM: Visual Function Questionnaire (VFQ-25) Score
VFQ-25 is a reliable and valid 25-item version of the 51-item National Eye Institute Visual Function Questionnaire (NEI-VFQ). It is especially useful in settings such as clinical trials, where interview length is a critical consideration. The global score derives from the summary of the scores deriving from each question. The total score has a minimum value "0" considered as the worst visual functionality, and the maximum value "100" considered as the better visual functionality. The questionnaire will be implemented only one time per person in the study duration.
Time frame: Within 8 months
Resource Utilization in Participants with CHM
Healthcare Resource Utilization will be assessed by number of primary care provider visits, specialist visits, urgent care visits, emergency room (ER) visits, hospitalizations, and rehabilitation visits in past 12 months when stratified by all-cause \& CHM-related.
Time frame: Up to 8 months
Caregivers of Participants With CHM: Caregiver-reported Depression Via Patient Health Questionnaire-9 (PHQ-9) Score
PHQ-9 can be used to screen for or diagnose depression, as well as measure depression severity. The PHQ-9 measures frequency of depression symptoms, with items scored on a 4-point scale (not at all=0 to nearly every day=3). The total score ranges from 0-27 where 0 is no depression and 27 is severe depression. The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Caregivers of Participants With CHM: Caregiver-reported Anxiety Via General Anxiety Disorder-7 (GAD-7) Score
GAD-7 is a 7-item questionnaire that is used for screening, diagnosing, monitoring, and measuring the severity of anxiety. Each item can be answered on a 4 point scale running from 0= 'not at all sure' to 3= 'nearly every day'. The total score ranges from 0-21 where 0 is no anxiety and 27 is severe anxiety. The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Caregivers of Participants With CHM: Caregiver Reaction Assessment (CRA) Score
Caregiver Reaction Assessment is a 24-item instrument assessing positive and negative aspects of caregiving (esteem, lack of family support, finances, schedule, and health). Each item is rated on a 1 to 4 scale. 1 (not at all) 2 (somewhat) 3 (quite a bit) 4 (completely). The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Caregivers of Participants With CHM: Work Productivity and Activity Impairment Caregiver (WPAI-CG) Score
WPAI-CG is a 6 questionnaire scale used to measure lost work productivity and impairment in daily activities over the past seven days. The WPAI yields four types of scores: 1. Absenteeism 2. Presenteesism 3. Work productivity loss 4. Activity Impairment, ranging from 0-100%. Higher numbers indicate greater impairment and less productivity. The questionnaire will be implemented only one time per person in the study duration.
Time frame: Up to 8 months
Plan to share: Yes — In accordance with Biogen's Clinical Trial Transparency and Data Sharing Policy on http://clinicalresearch.biogen.com/
No publications or documents are linked to this record.
This study is completed, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Biogen