Study Results
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Basic Information
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UNKNOWN
PHASE4
160 participants
INTERVENTIONAL
2015-01-31
2019-06-30
Brief Summary
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The ketogenic diet (KD) is a medically supervised diet that is high in fat and restricted in carbohydrates and protein. KD therapy has shown to be an effective treatment for seizures in children with epilepsy older than two. Associated benefits include: a reduced requirement for routine and emergency antiepileptic drugs (AED) and fewer seizure related hospital admissions. Although reports suggest that KD therapy improves seizures in younger children there is no high quality trial data that demonstrates effectiveness and safety in this age group. The KD is resource intensive, requiring dietetic and physician time; data is required to justify expansion of services to cater for the apparent need.
The investigators therefore propose a prospective multicentre randomised trial to investigate the effectiveness and safety of the KD in children with epilepsy under the age of 2, who have failed to respond to two or more AEDs. Children will be randomly assigned to either receive the KD or further AEDs. The allocated treatment will be started after a 2week baseline period, and it's effectiveness assessed after 8 weeks. Seizure diaries will be used to record seizures and related events, a questionnaire will be used to assess diet tolerance; also growth and blood biochemistry will be monitored.
The information obtained from this study is necessary to optimise choices in epilepsy treatment, aiming to improve outcomes and thus determine whether and when the KD should should be used.
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Detailed Description
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Children for this study will be recruited from 8 paediatric neurology centres in the South of England who have an established KD service for children with epilepsy. The collaborating paediatric neurologists based in these centres are named co-applicants on this proposal. All children ages 3 to 24 months will be considered if they have a diagnosis of epilepsy, namely continuing seizures despite a trial of 2 or more AEDs (including corticosteroids) and are experiencing at least 8 seizures a week.
Children will be excluded if they are shown to have: a metabolic disease contradicting the use of KD; a progressive neurological disease; severe gastrooesophageal reflux or have undergone a previous failed trial of KD. In addition, families should be able to attend clinic on the required timeline. KD meal plans will be accurately calculated for each child individually by a dietitian with consideration of daily calorie requirements, fat to carbohydrate ratio (3:1 or 4:1), adequate protein intake and vitamin and mineral supplementation. Ongoing adjustments to the diet by the dietitian are determined by weight gain and the degree of ketosis.
1. Baseline assessment: Written consent will be obtained from eligible children. Full history including seizure type, neurological examination, weight, length and head circumference will be documented. Randomisation to KD or standard AED group will be carried out with the support of the UCL PRIMENT Clinical Trials Unit (CTU).
Investigations to be performed in the KD group (or if clinically indicated in the AED group) will include FBC, U\&Es, Glucose, LFTs, Calcium, Magnesium, Phosphate, Zinc, Selenium, Acylcarnitine profile, Cholesterol, Triglycerides, Urate, 25 hydroxy Vitamin D, urine calcium/creatinine, urine organic acids. An EEG will be performed if clinically indicated.
2. Observation period of 2 weeks: No changes of regular AEDs. Emergency seizure treatments will continue as required( acute treatment with benzodiazepines). The following data will be recorded in a standardized diary (these data will continue to be recorded throughout the intervention period of 8 weeks): seizure types, seizure frequency, number of emergency seizure treatments required, contacts with the NHS due to seizure exacerbation (hospital admissions number of days, A\&E and or GP attendances)
3. Start of the classical KD or further AED. The classical KD will be administered as per protocol of the treating service. The recording of seizure types and frequency is to be continued.
4. Second Assessment (4 weeks after the start of the treatment period, all patients): clinical review including weight; documentation of seizure frequency, and tolerability of the diet in randomised KD group by questionnaire.
5. Third/final assessment (8 weeks after starting treatment/all patients). Clinical review including neurological examination, weight, length and head circumference. Documentation of seizure outcome (from seizure diaries). KD group only: completion of tolerability questionnaire, blood investigations (FBC, U\&Es, Glucose, LFTs, plasma bicarbonate, calcium, magnesium, phosphate, zinc, selenium, acylcarnitine profile, cholesterol, triglycerides, urate, nonesterified fatty acids, blood ketones) and urine calcium/creatinine ratio. EEG will be performed if clinically indicated.
Dependent on seizure response, KD (diet group) or AED (standard AED group) will then be continued or changed. Those in the AED group of failed will be offered KD outside the context of the trial. It would be anticipated that clinical data would be collected on all patients to 12 months to determine retention rates.
Exit criteria: Children will withdraw from the treatment prior to 8 weeks should there be q \>50% increase in seizure frequency from the baseline, or if intolerable side effects are not resolved by manipulation of KD or medication. A safety monitoring committee will be convened.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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Ketogenic diet
8 week trial of the ketogenic diet (KD) therapy. Children allocated to KD therapy will have their diets individually calculated by a paediatric dietitian with consideration of daily calorie requirements, adequate protein intake for growth and vitamin and mineral supplementation. All diets will be implemented according to a classical KD protocol, i.e. based on a ratio of fat to carbohydrate and protein that will usually be between 2:1 and 4:1.
Ketogenic diet
The ketogenic diet is a high fat diet designed to mimic the effects on the body of starvation. The premise is the main energy intake is fat, which is utilised in the body and produces ketones.
Antiepileptic drug therapy
The control intervention will be drug therapy with the most appropriate further antiepileptic drug (AED) for a particular child, depending on their presenting seizures and syndrome and previous drugs used, and chosen by the expert clinician responsible for management of the patient's epilepsy according to a standardised manual (consensus document) written following the initial workshop of the paediatric neurologists from all the trial centres.
Antiepileptic drug therapy
The control intervention will be drug therapy with the most appropriate further antiepileptic drug for a particular child, depending on their presenting seizures and syndrome and previous drugs used, and chosen by the expert clinician responsible for management of the patient's epilepsy.
Interventions
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Ketogenic diet
The ketogenic diet is a high fat diet designed to mimic the effects on the body of starvation. The premise is the main energy intake is fat, which is utilised in the body and produces ketones.
Antiepileptic drug therapy
The control intervention will be drug therapy with the most appropriate further antiepileptic drug for a particular child, depending on their presenting seizures and syndrome and previous drugs used, and chosen by the expert clinician responsible for management of the patient's epilepsy.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
2. Diagnosis of epilepsy confirmed.
3. At least an average of 4 seizures/week in baseline period.
4. Failed response to previous trial of two anti-epileptic drugs. In the case of infantile spasms this could include a trial of corticosteroids.
5. Children with written informed consent from parent/guardian.
Exclusion Criteria
2. No secure diagnosis of epilepsy
3. \< 4 seizures/week on average in baseline period
4. Trial of \< 2 AEDs
5. Continues on corticosteroids in previous 3 months prior to randomisation
6. Metabolic disease contraindicating use of the ketogenic diet e.g. pyruvate carboxylase deficiency, MCAD from previous medical investigation and screening at baseline.
7. Progressive neurological disease
8. Severe gastroesophageal reflux
9. Previous treatment with the ketogenic diet
10. Concurrent participation in another clinical trial of an investigational medicinal product.
11. Patients who are prescribed AEDs not listed in the trial IMPs
1 Month
2 Years
ALL
No
Sponsors
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Great Ormond Street Hospital for Children NHS Foundation Trust
OTHER
Cambridge University Hospitals NHS Foundation Trust
OTHER
Alder Hey Children's NHS Foundation Trust
OTHER
Bristol Royal Hospital for Children
OTHER
Birmingham Women's and Children's NHS Foundation Trust
OTHER
The Leeds Teaching Hospitals NHS Trust
OTHER
Manchester University NHS Foundation Trust
OTHER_GOV
Sheffield Children's NHS Foundation Trust
OTHER
National Institute for Health Research, United Kingdom
OTHER_GOV
Lancashire Care NHS Foundation Trust
NETWORK
Newcastle-upon-Tyne Hospitals NHS Trust
OTHER
St George's University Hospitals NHS Foundation Trust
OTHER
University College, London
OTHER
Responsible Party
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Principal Investigators
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Helen Cross, FRCP(UK)
Role: PRINCIPAL_INVESTIGATOR
UCL Institute of Child Health
Locations
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Birmingham Children's Hospital
Birmingham, , United Kingdom
Bristol Royal Hospital for Children
Bristol, , United Kingdom
Addenbrooke's Hospital
Cambridge, , United Kingdom
Lancashire Teaching Hospitals NHS Foundation Trust
Lancashire, , United Kingdom
Leeds Teaching Hospital
Leeds, , United Kingdom
Alder Hey Children's Hospital
Liverpool, , United Kingdom
Great Ormond Street Hospital
London, , United Kingdom
St George's University Hospitals NHS Foundation Trust
London, , United Kingdom
Royal Manchester Children's Hospital
Manchester, , United Kingdom
The Newcastle Upon Tyne Hospitals NHS Foundation Trust
Newcastle upon Tyne, , United Kingdom
Sheffield Children's NHS Foundation Trust
Sheffield, , United Kingdom
Countries
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Central Contacts
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Facility Contacts
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Andrew Mallick, FRCPCH
Role: primary
References
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Titre-Johnson S, Schoeler N, Eltze C, Williams R, Vezyroglou K, McCullagh H, Freemantle N, Heales S, Kneen R, Marston L, Martland T, Nazareth I, Neal E, Lux A, Parker A, Agrawal S, Fallon P, Cross JH. Ketogenic diet in the treatment of epilepsy in children under the age of 2 years: study protocol for a randomised controlled trial. Trials. 2017 Apr 26;18(1):195. doi: 10.1186/s13063-017-1918-3.
Other Identifiers
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13/0656
Identifier Type: -
Identifier Source: org_study_id
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