Angelman Syndrome Natural History Study
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04507997 |
Recruitment Status :
Recruiting
First Posted : August 11, 2020
Last Update Posted : November 25, 2022
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Condition or disease |
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Angelman Syndrome |
Study Type : | Observational |
Estimated Enrollment : | 300 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | Angelman Syndrome Natural History Study |
Actual Study Start Date : | August 1, 2018 |
Estimated Primary Completion Date : | August 2025 |
Estimated Study Completion Date : | August 2025 |

- Medical History [ Time Frame: Through study completion, an average of 1 year ]Includes various medical complications, including seizure history
- Developmental History [ Time Frame: Through study completion, an average of 1 year ]Developmental milestones in all domains

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | Child, Adult, Older Adult |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Molecular diagnosis of Angelman syndrome
Exclusion Criteria:
- Presence of another condition, unrelated to Angelman syndrome, that affects neurodevelopment

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04507997
Contact: Wen-Hann Tan, BMBS | 617-355 6394 | wen-hann.tan@childrens.harvard.edu | |
Contact: Katherine ("Katie") Anderson, BA | 617-919-6008 | Katherine.Anderson@childrens.harvard.edu |
United States, California | |
Rady Children's Hospital, San Diego | Recruiting |
San Diego, California, United States, 92123 | |
Contact: Rachel Winograd, BSN 858-966-8453 rwinograd@rchsd.org | |
Principal Investigator: Lynne M. Bird, MD | |
United States, Colorado | |
Children's Hospital Colorado | Recruiting |
Aurora, Colorado, United States, 80045 | |
Contact: Jessica Duis, MD 720-777-1234 JESSICA.DUIS@cuanschutz.edu | |
Principal Investigator: Jessica Duis, MD | |
United States, Georgia | |
Emory Clinic Genetics | Recruiting |
Atlanta, Georgia, United States, 30322 | |
Contact: Hannah Davis 404-778-8421 | |
Contact hannah.k.davis@emory.edu | |
Principal Investigator: Amy L. Talboy, MD | |
United States, Illinois | |
Rush University Children's Hospital | Recruiting |
Chicago, Illinois, United States, 60612 | |
Contact: Kathryn Kudlacz 312-563-9473 Kathryn_L_kudlacz@rush.edu | |
Principal Investigator: Cesar Ochoa, MD, MPH | |
United States, Massachusetts | |
Boston Children's Hospital | Recruiting |
Boston, Massachusetts, United States, 02115 | |
Contact: Wen-Hann Tan, BMBS wen-hann.tan@childrens.harvard.edu | |
Contact: Lotus Lichty, BA 617-919-2536 Lotus.Lichty@childrens.harvard.edu | |
United States, North Carolina | |
The Carolina Institute for Developmental Disabilities | Recruiting |
Carrboro, North Carolina, United States, 27510 | |
Contact: Margaret DeRamus, MS, CCC-SLP 919-966-5171 margaret.deramus@cidd.unc.edu | |
Principal Investigator: Margaret DeRamus, MS, CCC-SLP | |
United States, Tennessee | |
Monroe Carell Jr. Children's Hospital at Vanderbilt | Recruiting |
Nashville, Tennessee, United States, 37232 | |
Contact: Alexis Calvert, MPH 615-875-8513 alexis.calvert@vumc.org | |
Principal Investigator: Robert Carson, MD, PhD | |
Canada, Alberta | |
Alberta Children's Hospital | Recruiting |
Calgary, Alberta, Canada | |
Contact: Billie Au, MD, PhD 403-955-7246 Ping-Yee.Au@albertahealthservices.ca | |
Principal Investigator: Billie (Ping-Yee) Au, MD, PhD | |
Canada, British Columbia | |
BC Children's Hospital | Recruiting |
Vancouver, British Columbia, Canada | |
Contact: Inderpal Gill 604-875-2345 ext 6834 inderpal.gill@cw.bc.ca | |
Principal Investigator: Cyrus Boelman, MD | |
Canada, Ontario | |
Children's Hospital of Eastern Ontario | Recruiting |
Ottawa, Ontario, Canada | |
Contact: Ioana Moldovan, MD, MSc 613-737-7600 ext 2438 IMoldovan@cheo.on.ca | |
Principal Investigator: Erick Sell, MD |
Study Chair: | Wen-Hann Tan, BMBS | Boston Children's Hospital |
Responsible Party: | Wen-Hann Tan, Attending Physician in Genetics, Boston Children's Hospital |
ClinicalTrials.gov Identifier: | NCT04507997 |
Other Study ID Numbers: |
IRB-P00025249 |
First Posted: | August 11, 2020 Key Record Dates |
Last Update Posted: | November 25, 2022 |
Last Verified: | November 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Angelman syndrome |
Angelman Syndrome Syndrome Disease Pathologic Processes Movement Disorders Central Nervous System Diseases |
Nervous System Diseases Abnormalities, Multiple Congenital Abnormalities Chromosome Disorders Genetic Diseases, Inborn |