Ketogenic Diet in Infants With Epilepsy (KIWE)

Epilepsy Clinical Trial

— KIWE  

Official title:

A Randomised Controlled Trial of the Ketogenic Diet in the Treatment of Epilepsy in Children Under the Age of Two Years

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT02205931
• Other study ID #: 13/0656
• Status: Recruiting
• Phase: Phase 4
• First received: December 16, 2013
• Last updated: May 2, 2017
• Start date: January 2015
• Est. completion date: June 2019

Study information

• Verified date: May 2017
• Source: University College, London
• Contact: Helen Cross, FRCP(UK)
• Phone: 0044 207 599 4105
• Email: h.cross[@]ucl.ac.uk
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Epilepsy, a condition where individuals are prone to recurrent epileptic seizures, is the most common chronic neurological disorder in children. Epilepsy onset is most common in the first two years of life and is associated with poor prognosis for seizure control and neurodevelopmental outcome.

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.

Description:

The project proposed is a randomised controlled multicentre study of infants with epilepsy who have failed to respond to two or more pharmacological treatments (antiepileptic drugs (AEDs) or corticosteroids), comparing ketogenic diet to treatment with a further AED.

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.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 160
• Est. completion date: June 2019
• Est. primary completion date: June 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 1 Month to 2 Years

Eligibility

Inclusion Criteria:

1. Age between 1 month and 24 months of age (not beyond second birthday at baseline).

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:

1. Age <1m or > 24 months of age

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

Related Conditions & MeSH terms

• Epilepsy

Intervention

Other:
• 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.

Drug:
• 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.

Locations

Country	Name	City	State
United Kingdom	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

Sponsors (13)

Lead Sponsor

Collaborator

University College, London

Alder Hey Children's NHS Foundation Trust, Birmingham Women's and Children's NHS Foundation Trust, Bristol Royal Hospital for Children, Cambridge University Hospitals NHS Foundation Trust, Central Manchester University Hospitals NHS Foundation Trust, Great Ormond Street Hospital for Children NHS Foundation Trust, Lancashire Care NHS Foundation Trust, National Institute for Health Research, United Kingdom, Newcastle-upon-Tyne Hospitals NHS Trust, Sheffield Children's NHS Foundation Trust, St George's University Hospitals, The Leeds Teaching Hospitals NHS Trust

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Retention on treatment	retention on treatment, quality of life and neurodevelopmental outcome	12 months
Primary	Number of seizures	Number of seizures experienced during weeks 6 - 8	6 - 8 weeks
Secondary	Responder rate	number of children seizure free and relationship between medium chain fatty acids and seizure control	8 weeks