Epilepsy syndrome
MONDO:0015650A syndrome that has a characteristic cluster of clinical features and/or lectroencephalographic (EEG) findings that reflect underlying epileptic activity. It is often associated with a range of other health issues, including cognitive impairment, intellectual disability, physical gross motor and fine motor delays, speech and language deficits, and impacts to other bodily functions and may be supported by specific etiological findings—such as structural, genetic, metabolic, immune, or infectious causes or have an unknown etiology.
Also known as: epileptic syndrome, syndromic epilepsy
186 clinical trials for this condition and its sub-types, 2 tagged with Epilepsy syndrome itself.
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Sub-types of Epilepsy syndrome
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Childhood-onset epilepsy syndrome 18 trials · 106 incl. sub-types
16 sub-types
- Familial partial epilepsy 0 trials · 39 incl. sub-types Sub-types →
- Childhood-onset epilepsy syndrome with developmental and/or epileptic encephalopathy 0 trials · 37 incl. sub-types Sub-types →
- New-onset refractory status epilepticus 8 trials
- Childhood-onset idiopathic generalized epilepsy syndrome 0 trials · 7 incl. sub-types Sub-types →
- Childhood-onset self-limited focal epilepsy syndrome 0 trials · 3 incl. sub-types Sub-types →
- Atypical childhood epilepsy with centrotemporal spikes 1 trial
- Rolandic epilepsy-speech dyspraxia syndrome 0 trials · 1 incl. sub-types Sub-types →
- Landau-Kleffner syndrome 0 trials
- Sunflower syndrome 0 trials
- Acute encephalopathy with biphasic seizures and late reduced diffusion 0 trials
- Childhood-onset genetic generalized epilepsy syndrome 0 trials Sub-types →
- Cryptogenic late-onset epileptic spasms 0 trials
- Early-onset epileptic encephalopathy and intellectual disability due to GRIN2A mutation 0 trials
- Perioral myoclonia with absences 0 trials
- Rolandic epilepsy-paroxysmal exercise-induced dystonia-writer's cramp syndrome 0 trials
- Self-limited childhood occipital epilepsy 0 trials Sub-types →
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Neonatal/infantile epilepsy syndrome 1 trial · 55 incl. sub-types
3 sub-types
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Variable age epilepsy syndrome 0 trials · 31 incl. sub-types
4 sub-types
- Variable-age onset idiopathic generalized epilepsy syndrome 0 trials · 17 incl. sub-types Sub-types →
- Variable-age epilepsy syndrome with developmental and/or epileptic encephalopathy or progressive neurological deterioration 0 trials · 14 incl. sub-types Sub-types →
- Variable-age onset combined generalized and focal epilepsy syndrome 0 trials Sub-types →
- Variable-age onset focal epilepsy syndrome 0 trials Sub-types →
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Myoclonic epilepsy 1 trial · 16 incl. sub-types
7 sub-types
- Progressive myoclonus epilepsy 5 trials · 12 incl. sub-types Sub-types →
- Juvenile myoclonic epilepsy 3 trials Sub-types →
- Epilepsy, familial adult myoclonic 0 trials Sub-types →
- Familial infantile myoclonic epilepsy 0 trials
- Myoclonic epilepsy in infancy 0 trials
- Myoclonic epilepsy in non-progressive encephalopathies 0 trials
- Myoclonic epilepsy, Hartung type 0 trials
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Infantile epilepsy syndrome 2 trials · 10 incl. sub-types
9 sub-types
- Undetermined early-onset epileptic encephalopathy 1 trial · 6 incl. sub-types Sub-types →
- Intellectual disability, autosomal dominant 5 2 trials
- Benign partial infantile seizures 0 trials Sub-types →
- Idiopathic hemiconvulsion-hemiplegia syndrome 0 trials
- Infant epilepsy with migrant focal crisis 0 trials
- Infantile spasms-broad thumbs syndrome 0 trials
- Infantile-onset mesial temporal lobe epilepsy with severe cognitive regression 0 trials
- Myoclonic epilepsy in infancy 0 trials
- Progressive myoclonic epilepsy with dystonia 0 trials
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Neonatal epilepsy syndrome 1 trial · 7 incl. sub-types
6 sub-types
- Undetermined early-onset epileptic encephalopathy 1 trial · 6 incl. sub-types Sub-types →
- Benign idiopathic neonatal seizures 0 trials
- Benign neonatal seizures 0 trials Sub-types →
- Developmental and epileptic encephalopathy, 39 0 trials
- Malignant migrating partial seizures of infancy 0 trials Sub-types →
- Severe neonatal-onset encephalopathy with microcephaly 0 trials
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Benign focal seizures of adolescence 0 trials
Most studied deeper sub-types
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New hope for dravet syndrome: phase 3 trial of LP352 aims to cut seizure frequency
Disease control OngoingThis study tests whether the drug LP352 can safely reduce seizures in children and adults with Dravet syndrome, a severe form of epilepsy. About 160 participants will receive either LP352 or a placebo, and researchers will track changes in seizure frequency over several months. T…
Phase 3 • Sponsor: Longboard Pharmaceuticals • Aim: Disease control
Last updated Sep 19, 2026 00:00 UTC
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New hope for Hard-to-Treat seizures: phase 3 trial launches
Disease control OngoingThis study tests an experimental drug called LP352 to see if it can safely reduce seizures in children and adults with developmental and epileptic encephalopathies (DEE), a group of severe epilepsy syndromes. About 320 participants will receive either LP352 or a placebo, and rese…
Phase 3 • Sponsor: Longboard Pharmaceuticals • Aim: Disease control
Last updated Sep 17, 2026 00:00 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 2 • Sponsor: NeuroPace • Aim: Disease control
Last updated Sep 17, 2026 00:00 UTC
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New drug LP352 aims to control seizures in severe epilepsy over the long term
Disease control By invitation onlyThis 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 3 • Sponsor: Longboard Pharmaceuticals • Aim: Disease control
Last updated Sep 17, 2026 00:00 UTC
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New epilepsy drug XEN1101 tested for long-term seizure control
Disease control By invitation onlyThis study tests the long-term safety and effectiveness of XEN1101 (azetukalner) in 880 adults with focal or tonic-clonic seizures. Participants who completed earlier studies will take XEN1101 capsules for up to 6 years. Researchers will track side effects and changes in monthly …
Phase 3 • Sponsor: Xenon Pharmaceuticals Inc. • Aim: Disease control
Last updated Sep 13, 2026 00:00 UTC
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New epilepsy drug tested for Long-Term safety in kids
Disease control OngoingThis study looks at the long-term safety of the drug brivaracetam in children and teenagers with childhood absence epilepsy or juvenile absence epilepsy. About 120 participants who have already taken the drug in earlier studies will continue treatment and be monitored for side ef…
Phase 3 • Sponsor: UCB Biopharma SRL • Aim: Disease control
Last updated Aug 29, 2026 00:00 UTC
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Can invisible electric fields quiet the Brain's seizure signals?
Disease control By invitation onlyThis trial tests whether a non-invasive technique called temporally-interfering electric field stimulation (TIEFS) can reduce abnormal brain activity linked to epilepsy. Researchers will measure seizure-related signals in patients with medial temporal lobe epilepsy who are alread…
Sponsor: University of California, Davis • Aim: Disease control
Last updated Aug 08, 2026 00:03 UTC
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New hope for kids with rare epilepsy: drug trial targets seizure control
Disease control OngoingThis study tests an investigational drug called relutrigine in 160 children with a severe form of epilepsy called developmental and epileptic encephalopathy (DEE). The goal is to see if the drug can safely reduce monthly seizure frequency compared to a placebo. After the initial …
Phase 3 • Sponsor: Praxis Precision Medicines • Aim: Disease control
Last updated Aug 06, 2026 00:00 UTC
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New epilepsy drug vormatrigine tested for Long-Term safety in 700 adults
Disease control By invitation onlyThis study is testing the long-term safety of a once-daily drug called vormatrigine in 700 adults with focal or generalized tonic-clonic seizures. Participants must have already taken vormatrigine in a previous trial or program. The main goal is to check for side effects and chan…
Phase 3 • Sponsor: Praxis Precision Medicines • Aim: Disease control
Last updated Aug 05, 2026 00:00 UTC
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Custom-Made genetic drug targets rare brain disease in first human test
Disease control OngoingThis study tests a personalized medicine called an antisense oligonucleotide, designed specifically for one person with dentatorubral-pallidoluysian atrophy (DRPLA), a rare genetic brain disorder. The treatment aims to reduce seizures and improve quality of life by targeting the …
Phase 1/2 • Sponsor: n-Lorem Foundation • Aim: Disease control
Last updated Jul 15, 2026 00:00 UTC
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New epilepsy drug shows promise for kids in early trial
Disease control OngoingThis study tests whether adding perampanel (Fycompa) to current epilepsy medications can reduce seizures in children aged 1 month to 18 years. About 100 children with specific epilepsy syndromes or partial-onset seizures will receive the drug. The main goal is to see if at least …
Phase 2 • Sponsor: Eisai Inc. • Aim: Disease control
Last updated Jul 12, 2026 00:00 UTC
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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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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 1/2 • 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 3 • 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 ApprovedThis 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…
Sponsor: Liankun_Ren • Aim: Disease control
Last updated Jun 27, 2026 12:06 UTC
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Custom drug targets rare genetic brain disease in First-Ever human test
Disease control OngoingThis study tests a custom-made drug called an antisense oligonucleotide (ASO) designed for one person with dentatorubral-pallidoluysian atrophy (DRPLA), a rare genetic disorder that affects movement and brain function. The drug aims to reduce the harmful effects of the mutated AT…
Phase 1/2 • Sponsor: n-Lorem Foundation • Aim: Disease control
Last updated Jun 27, 2026 12:05 UTC
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One-of-a-Kind drug trial targets rare genetic brain disease
Disease control OngoingThis study tests a custom-made genetic medicine (called an antisense oligonucleotide) designed for one person with dentatorubral-pallidoluysian atrophy (DRPLA), a rare inherited brain disorder. The treatment aims to reduce seizures and improve quality of life. Only one participan…
Phase 1/2 • Sponsor: n-Lorem Foundation • Aim: Disease control
Last updated Jun 27, 2026 12:04 UTC
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Could a stem cell transplant stop the immune system from attacking the brain?
Disease control OngoingThis phase 2 trial tests whether high-dose chemotherapy followed by a stem cell transplant can stop the immune system from attacking the nervous system in people with autoimmune neurologic diseases like multiple sclerosis and stiff person syndrome. The treatment aims to weaken th…
Phase 2 • Sponsor: Fred Hutchinson Cancer Center • Aim: Disease control
Last updated Jun 27, 2026 09:08 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 2 • 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 2/3 • 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 ApprovedThis 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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Brain zaps for seizures: tiny trial tests new target
Disease control OngoingThis pilot study tests whether deep brain stimulation (DBS) of a brain region called the subiculum can safely reduce seizures in 6 people with drug-resistant temporal lobe epilepsy and bilateral hippocampal sclerosis. Participants receive a DBS device, and researchers track seizu…
Sponsor: Xuanwu Hospital, Beijing • Aim: Disease control
Last updated Jun 27, 2026 07:58 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 1/2 • 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 Expanded access (ended)This 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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New inhaler aims to stop prolonged seizures fast and safely
Symptom relief By invitation onlyThis study tests the long-term safety of an inhaled medication called Staccato alprazolam for people aged 12 and older who have prolonged seizures. About 300 participants will use the inhaler when a seizure starts to see if it stops the seizure quickly and without serious side ef…
Phase 3 • Sponsor: UCB Biopharma SRL • Aim: Symptom relief
Last updated Aug 16, 2026 00:00 UTC
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Brain-Computer interface aimed at boosting attention in kids with epilepsy – but study never started
Symptom relief CancelledThis study planned to test whether a brain-computer interface (BCI) could help children with drug-resistant epilepsy improve their attention. Participants would have used brain electrodes already implanted for epilepsy surgery to train a decoder that gives real-time feedback when…
Sponsor: University of Texas at Austin • Aim: Symptom relief
Last updated Jun 27, 2026 12:28 UTC
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New program aims to ease burden on families of kids with rare diseases
Symptom relief By invitation onlyThis study tests a program called FACE-Rare, designed to support family caregivers of children with rare, life-limiting diseases. The program includes three sessions to help families prepare for future medical decisions and improve their quality of life. Researchers will compare …
Sponsor: Children's National Research Institute • Aim: Symptom relief
Last updated Jun 27, 2026 09:00 UTC
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Sound waves aimed at the brain could ease seizures
Symptom relief By invitation onlyThis small study tests whether low-intensity focused ultrasound (LIFU) can safely reduce seizures in people with temporal lobe epilepsy that doesn't improve with medication. Six participants with implanted brain electrodes will receive both real and sham ultrasound sessions. The …
Sponsor: Carilion Clinic • Aim: Symptom relief
Last updated Jun 27, 2026 08:13 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 4 • Sponsor: Jazz Pharmaceuticals • Aim: Knowledge-focused
Last updated Aug 28, 2026 00:00 UTC
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Counting the uncounted: a nationwide look at two rare epilepsies
Knowledge-focused CancelledThis observational study aims to measure how many people in Portugal have Dravet syndrome (DS) or Lennox-Gastaut syndrome (LGS), two rare and severe forms of epilepsy. Researchers will review existing medical records from about three public hospitals to estimate the percentage of…
Sponsor: Takeda • Aim: Knowledge-focused
Last updated Aug 19, 2026 00:00 UTC
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Brain imaging study seeks clues to childhood epilepsy
Knowledge-focused CancelledThis study looked at how sounds played during sleep affect brain waves and memory in children with Rolandic epilepsy. Researchers used brain scans (MRI, MEG/EEG) to understand which brain circuits are involved. The goal was to find new treatment ideas for this type of childhood e…
Sponsor: Massachusetts General Hospital • Aim: Knowledge-focused
Last updated Aug 09, 2026 00:00 UTC
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EEG clues may reveal who benefits from seizure drug
Knowledge-focused By invitation onlyThis 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 Aug 08, 2026 00:03 UTC
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Can mapping a rare Gene's effects pave the way to targeted epilepsy therapies?
Knowledge-focused OngoingThis study follows children aged 6 to 21 who have a CNKSR2 gene mutation, which can cause epilepsy, language difficulties, and intellectual disability. Researchers will use brain scans, EEGs, and developmental tests to track how the condition changes over time. The goal is to cre…
Sponsor: University of California, San Francisco • Aim: Knowledge-focused
Last updated Jul 25, 2026 00:00 UTC
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Massive genetic study aims to unlock secrets of rare metabolic diseases
Knowledge-focused By invitation onlyThis study will collect and analyze genetic data from 1000 people with suspected inherited metabolic diseases, including conditions like epilepsy and mitochondrial disorders. Researchers at Karolinska University Hospital aim to improve diagnosis by using advanced genetic testing …
Sponsor: Region Stockholm • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:38 UTC
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Scientists dig into brain genes to unlock epilepsy mysteries
Knowledge-focused OngoingThis study looks at gene activity in brain tissue removed during surgery from 10 people with temporal lobe epilepsy and hippocampal sclerosis. The goal is to find which genes are linked to the disease and may help predict outcomes. No new treatment is being tested; instead, resea…
Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:25 UTC
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New registry aims to unlock secrets of rare CDKL5 disorder
Knowledge-focused PausedThis 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 brain scanner hat could improve epilepsy surgery for kids
Knowledge-focused By invitation onlyThis study compares a new type of brain scanner (OPM-MEG) to the standard MEG scanner used to plan epilepsy surgery in children. The new scanner uses a lightweight hat instead of a rigid helmet, making it more comfortable and better fitting for kids. Researchers will check if the…
Sponsor: Aston University • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:00 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…
Sponsor: Hospices Civils de Lyon • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC
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Zapping the Brain's memory network: a new hope for epilepsy?
Knowledge-focused By invitation onlyThis pilot study at the University of Chicago is testing whether a non-invasive brain stimulation technique called TMS can improve memory and reduce seizure-related brain activity in people with mesial temporal lobe epilepsy (MTLE). Thirty-four adults with drug-resistant MTLE wil…
Sponsor: University of Chicago • Aim: Knowledge-focused
Last updated Jun 26, 2026 16:21 UTC