Synonyms: UPD(15)pat
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version August 2026
Newly diagnosed with
Angelman syndrome due to paternal uniparental disomy of chromosome 15?
Our RARE Concierge Services Guides are available to assist you by providing information, resources and connections as you navigate your rare disease journey.
Advocacy Organizations
Access to Life NGO
Access to Life is Ukraine’s first patient advocacy organization for rare genetic epilepsies, anchored in Dravet syndrome and SCN1A-related conditions. We support 600+ families nationwide, advocate for a national clinical protocol and drug access, and are building Ukraine’s National Patient Resource Centre and Patient Registry for genetic epilepsies.
Angelman Syndrome Foundation
The mission of the Angelman Syndrome Foundation is to advance the awareness and treatment of Angelman syndrome through education and information, research, and support for individuals with Angelman syndrome, their families and other concerned parties. We exist to give all of them a reason to smile, with the ultimate goal of finding a cure.
Associação Angelman Brasil
To improve the quality of life of people with Angelman Syndrome by disseminating technical and scientific knowledge and offering appropriate support to families for greater inclusion of these individuals in society.
Foundation for Angelman Syndrome Therapeutics (FAST)
FAST is the leading patient advocacy organization working to cure Angelman syndrome. As the largest non-governmental funder of Angelman syndrome research in the world, our goal is to drive forward transformative research and development programs as quickly as possible for those living with Angelman syndrome — regardless of age or genotype.
Foundation for Angelman Syndrome Therapeutics Australia
Ddedicated to assisting individuals living with Angelman syndrome to realise their full potential and quality of life through funding research, education, and advocacy. Our focus is treatments that will improve the symptoms of Angelman syndrome and ultimately research that will provide a cure.
Genetic Epilepsy Team Australia
Collaboration of research and care
Legacy Bridges Foundation, Inc
The Legacy Bridges Foundation, Inc. is a 501(c)3 non-profit organization founded to bridge the gap to support, educate and advocate for individuals, families and caregivers of those living with epilepsy and other seizure related disorders. The Legacy Bridges Foundation, Inc. is dedicated to helping champions live a sustainable life through participation of essential supportive programs and service
PPP2CA Pathways
PPP2CA Pathways connects families, shares strength, and supports the research community in the search for answers to Houge-Janssens Syndrome type 3.
Rare Chromosome Disorder Support Group – Unique
Through sharing knowledge and lived experience, Unique helps families and professionals navigate the world of chromosome and gene disorders
Rare Epilepsy Network (REN)
REN connects and empowers the rare epilepsy community to collaborate across research, care, education, and advocacy to improve outcomes for patients and families.
ReNU2 Foundation
ReNU2 Foundation supports families affected by RNU2-2-related neurodevelopmental disease. We foster collaboration, raise awareness, and advance research—pursuing a world where every family has testing, informed care, community, and treatment.
Uganda Alliance of Patients Organization
Supporting patients to access quality, safe and patient-centered healthcare services.
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Clinical Trials
For a list of clinical trials in this disease area, please click here.