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Genetic developmental and epileptic encephalopathy
MONDO:0100062A complex neurodevelopmental disorder characterized by a range of developmental delays and epileptic encephalopathy phenotypes. Seizure onset is variable and intellectual disability is variable in presence and severity.
Also known as: developmental and epileptic encephalopathy, hereditary developmental and epileptic encephalopathy
99 clinical trials for this condition and its sub-types.
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Broader categories
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Real-World study tracks Epidyolex's Long-Term impact on seizures
Disease control OngoingThis study follows 158 people in France who are prescribed Epidyolex (a cannabidiol-based medicine) for seizures as part of their normal care. Researchers will track how long people stay on the treatment, side effects, seizure frequency, and changes in daily functioning and quali…
Sponsor: Jazz Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 14:00 UTC
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New hope for infants with severe epilepsy: fenfluramine trial launches
Disease control OngoingThis phase 3 trial is testing the safety and tolerability of fenfluramine (Fintepla) in 25 infants aged 1 to 2 years with Dravet syndrome, a severe form of epilepsy. The drug is given as an oral solution twice daily alongside other seizure medications. Researchers will monitor he…
Phase: PHASE3 • Sponsor: UCB BIOSCIENCES, Inc. • Aim: Disease control
Last updated Jun 27, 2026 14:00 UTC
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Gene therapy trial aims to tame seizures in kids with rare epilepsy
Disease control OngoingThis early-stage study tests a gene therapy called ETX101 in 5 children with Dravet syndrome, a severe form of epilepsy. The therapy delivers a gene that helps calm overactive brain cells. Researchers will check if it safely reduces seizure frequency and improves thinking and dai…
Phase: PHASE1, PHASE2 • Sponsor: Encoded Therapeutics • Aim: Disease control
Last updated Jun 27, 2026 13:04 UTC
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CBD epilepsy drug under Real-World watch for rare seizure disorders
Disease control OngoingThis study follows about 111 people with Lennox-Gastaut syndrome, Dravet syndrome, or tuberous sclerosis complex who are taking Epidyolex (a CBD oral solution) for seizures. Researchers track how many stay on the drug for a year and how many seizure-free days they have. It's an o…
Sponsor: Jazz Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 13:01 UTC
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New hope for rare epilepsy: drug shows promise in phase 3 trial
Disease control OngoingThis Phase 3 study tests whether fenfluramine (ZX008) can safely reduce seizures in 87 children and adults with CDKL5 deficiency disorder, a rare genetic condition causing severe epilepsy. Participants receive either the drug or a placebo, followed by an open-label extension wher…
Phase: PHASE3 • Sponsor: Zogenix, Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:24 UTC
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New hope for rare epilepsy: fenfluramine made available for dravet patients
Disease control APPROVED_FOR_MARKETINGThis study offers fenfluramine to people with Dravet syndrome whose seizures have not improved with other medications. The goal is to provide access to the drug and monitor its safety. Participants must have a genetic diagnosis of Dravet syndrome and have tried all available seiz…
Sponsor: University of California, Los Angeles • Aim: Disease control
Last updated Jun 27, 2026 12:09 UTC
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Brain pacemaker shows promise for rare childhood epilepsy
Disease control OngoingThis pilot study tests whether deep brain stimulation (DBS) of specific brain pathways can safely reduce seizures in people with Lennox-Gastaut syndrome, a severe form of epilepsy. Five participants receive the electrical stimulation as an add-on to their usual treatment. The goa…
Phase: NA • Sponsor: Liankun_Ren • Aim: Disease control
Last updated Jun 27, 2026 12:06 UTC
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Hope for dravet syndrome: Long-Term safety trial of STK-001 underway
Disease control OngoingThis study looks at the long-term safety of an experimental drug called zorevunersen (STK-001) in 60 people with Dravet syndrome, a severe form of epilepsy. Participants must have completed an earlier STK-001 study. Researchers will monitor side effects, seizure frequency, and qu…
Phase: PHASE2 • Sponsor: Stoke Therapeutics, Inc • Aim: Disease control
Last updated Jun 27, 2026 09:01 UTC
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New hope for kids with hard-to-treat genetic seizures
Disease control OngoingThis study tests a new medicine called PRAX-562 in 77 children with rare genetic epilepsies (SCN2A or SCN8A). The goal is to see if it safely reduces motor seizures. The trial has two parts: a double-blind phase where some children get the drug and some get a placebo, followed by…
Phase: PHASE2, PHASE3 • Sponsor: Praxis Precision Medicines • Aim: Disease control
Last updated Jun 27, 2026 09:00 UTC
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New hope for dravet syndrome: expanded access to seizure drug stiripentol
Disease control APPROVED_FOR_MARKETINGThis program provides expanded access to the drug stiripentol for people aged 6 months and older with Dravet syndrome, a severe form of epilepsy. The goal is to help control seizures that do not respond to other treatments. Participants must have a confirmed diagnosis and meet sa…
Sponsor: Children's Hospital Medical Center, Cincinnati • Aim: Disease control
Last updated Jun 27, 2026 08:13 UTC
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Could a urea cycle drug help kids with rare epilepsy?
Disease control OngoingThis early-phase trial is testing whether glycerol phenylbutyrate (Ravicti), a drug already approved for a different condition, is safe and tolerable for children with genetic disorders like STXBP1 and SLC6A1 that cause seizures and developmental delays. The study will enroll 50 …
Phase: EARLY_PHASE1 • Sponsor: Weill Medical College of Cornell University • Aim: Disease control
Last updated Jun 27, 2026 08:12 UTC
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Brain implant shows promise for Hard-to-Treat seizures in rare epilepsy
Disease control OngoingThis study tests a brain-responsive neurostimulation system in 24 people aged 12 and older with Lennox-Gastaut syndrome whose seizures are not controlled by medication. The device detects and responds to seizure activity in the brain to reduce drop seizures. The goal is to see if…
Phase: PHASE2 • Sponsor: NeuroPace • Aim: Disease control
Last updated Jun 27, 2026 08:10 UTC
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New drug LP352 aims to control seizures in severe epilepsy over the long term
Disease control ENROLLING_BY_INVITATIONThis phase 3 study is testing the long-term safety and effectiveness of LP352 (Bexicaserin) in 324 children and adults with developmental and epileptic encephalopathy (DEE), including Dravet and Lennox-Gastaut syndromes. Participants who completed earlier studies will receive LP3…
Phase: PHASE3 • Sponsor: Longboard Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 08:08 UTC
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Gene therapy trial aims to tame severe seizures in kids with dravet syndrome
Disease control OngoingThis study tests a gene therapy called ETX101 in 4 children with Dravet syndrome, a severe seizure disorder caused by a gene change. The therapy uses a harmless virus to deliver a working copy of the gene to brain cells. The main goals are to see if it is safe and if it reduces s…
Phase: PHASE1, PHASE2 • Sponsor: Encoded Therapeutics • Aim: Disease control
Last updated Jun 27, 2026 07:57 UTC
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Bridge program keeps seizure drug available for eligible patients
Disease control NO_LONGER_AVAILABLEThis program provides continued access to the seizure medication perampanel (Fycompa) for people who completed certain earlier studies and are still benefiting from the drug. It runs until the drug is commercially available in their country or no participants remain. Only those a…
Sponsor: Eisai Inc. • Aim: Disease control
Last updated Jun 26, 2026 17:19 UTC
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Newborn screening study aims to catch rare diseases at birth
Diagnosis OngoingThis study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…
Sponsor: RTI International • Aim: Diagnosis
Last updated Jul 03, 2026 00:00 UTC
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AI boosts brain scan accuracy in massive new trial
Diagnosis ENROLLING_BY_INVITATIONThis study tests whether an AI tool can help radiologists read brain CT and MRI scans more accurately and quickly. Researchers will compare how well doctors, AI alone, and doctors using AI together can spot abnormalities, urgent findings, and classify diseases. The goal is to red…
Sponsor: Yaou Liu • Aim: Diagnosis
Last updated Jun 27, 2026 11:00 UTC
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Virtual reality could calm anxious kids with autism at the dentist
Symptom relief ENROLLING_BY_INVITATIONThis study tests whether wearing a virtual reality (VR) headset during dental treatment can reduce fear and stress in children with mild intellectual disabilities or autism spectrum disorder. Two hundred children aged 6 to 12 will either receive standard dental care or use a VR h…
Phase: NA • Sponsor: Semmelweis University • Aim: Symptom relief
Last updated Jun 27, 2026 14:02 UTC
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Robot suit helps kids with movement disorders take steps at home
Symptom relief OngoingThis study tests a wearable robotic exoskeleton called EXPLORER in 15 children with movement problems from conditions like cerebral palsy. The goal is to see if it helps them walk better in their everyday environments, such as home and the community. The study focuses on safety, …
Phase: NA • Sponsor: MarsiBionics • Aim: Symptom relief
Last updated Jun 27, 2026 07:51 UTC
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Epidiolex liver check: is Long-Term use safe?
Knowledge-focused OngoingThis study follows 154 people taking Epidiolex (cannabidiol) for seizures caused by Lennox-Gastaut syndrome, Dravet syndrome, or tuberous sclerosis complex. Researchers will monitor for signs of chronic liver injury and fibrosis over time using blood tests and liver scans. The go…
Phase: PHASE4 • Sponsor: Jazz Pharmaceuticals • Aim: Knowledge-focused
Last updated Jul 01, 2026 00:00 UTC
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EEG clues may reveal who benefits from seizure drug
Knowledge-focused ENROLLING_BY_INVITATIONThis study looks at whether specific brain wave patterns on an EEG can predict how well the drug fenfluramine works for people with Lennox-Gastaut Syndrome (LGS), a severe form of epilepsy. Researchers will follow 20 children and adults aged 2 to 35 who are already taking fenflur…
Sponsor: University of Chicago • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:30 UTC
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New registry aims to unlock secrets of rare CDKL5 disorder
Knowledge-focused TerminatedThis study creates a registry for up to 500 people with CDKL5 Deficiency Disorder (CDD), a rare genetic condition that causes seizures and developmental delays. Patients and their caregivers will provide information about symptoms, treatments, and quality of life over several yea…
Sponsor: University of Pennsylvania • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:23 UTC
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New study aims to predict sudden death in severe epilepsy
Knowledge-focused OngoingThis study looks at how repeated seizures affect breathing and heart function in people with Dravet syndrome, a severe form of epilepsy. Researchers will monitor 92 children and adults for 24-48 hours using video, brain wave, heart, and breathing recordings. The goal is to find c…
Phase: NA • Sponsor: Hospices Civils de Lyon • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC
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300 volunteers help create medical image bank for science
Knowledge-focused OngoingThis study gathers MRI, CT, and ultrasound images from 300 adults—some healthy, some with kidney or brain disease—to build a collection for future not-for-profit research. No new treatments are being tested; the goal is to make medical images available to scientists for advancing…
Sponsor: Mario Negri Institute for Pharmacological Research • Aim: Knowledge-focused
Last updated Jun 26, 2026 13:28 UTC