Lennox-Gastaut syndrome

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A rare severe early-onset developmental epileptic encephalopathy characterized by the triad of intellectual impairment multiple seizure types and typical electroencephalography (EEG) abnormalities.

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

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Lennox-Gastaut syndrome?

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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.

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

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.