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Leucine Enriched Essential Amino Acid Powder as an Add-on to a Classic Ketogenic Diet in Refractory Epilepsy

Open Label, Single-Arm Study of the Safety and Tolerability of a Leucine Enriched Essential Amino Acid Powder as an Add-on to a Classic Ketogenic Diet in Refractory Epilepsy

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06387186
Enrollment
4
Registered
2024-04-26
Start date
2024-05-10
Completion date
2026-02-18
Last updated
2026-05-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Drug Resistant Epilepsy, Refractory Epilepsy

Keywords

Refractory Epilepsy, Ketogenic Diet, Leucine-Enriched Essential Amino Acid

Brief summary

The main purpose of this study is to evaluate the safety and tolerability of a Leucine-Enriched Essential Amino Acid (LEAA) Powder as an add-on to a classic ketogenic diet (KD) in pediatric and adult patients with refractory epilepsy.

Detailed description

This is a single center, single-arm, open label study to evaluate the safety, tolerability, and nutritional effect of Leucine-Enriched Essential Amino Acid powder (LEAA) when added to classical KD in pediatric and adult patients whose epilepsy is insufficiently controlled on the diet. The study will enroll patients who have previously been compliant with their classical KD regimen for at least 28 days prior to enrollment and have experienced some response (≥40% reduction in seizures), but not complete response (\<90% reduction in seizures) to dietary management with KD. Study duration is 84 days and will have 3 remote study visits (Baseline- Remote Visit 1, Dose Adjustment- Remote Visit 2, and Final- Remote Visit 3) and a pre-screening communication via telephone/video.

Interventions

DRUGLeucine-Enriched Essential Amino Acid powder

Leucine-Enriched Essential Amino Acid Powder will be orally/enterally administered by mixing in water or ketogenic formula.

Sponsors

Elizabeth Anne Thiele
Lead SponsorOTHER
Ajinomoto USA, INC.
CollaboratorINDUSTRY
Ajinomoto Co., Inc.
CollaboratorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Male or female patients ages 2 years and up at enrollment. 2. A diagnosis of epilepsy, with at least 2 seizures per week according to the parent/guardian report to study staff and investigator medical notes if applicable. All seizure types allowed. 3. Under stable treatment with a classic ketogenic diet (KD) regimen with a KD ratio ≥ 1:1, with or without antiseizure medications (ASMs), for at least 28 days with documented, partial response (≥40% reduction in seizures), but not a complete response (\<90% reduction in seizures) based on patient medical records or parental report. 4. Patient and/or parent/caregiver able and willing to follow all study procedures and successfully complete the study.

Exclusion criteria

1. Patients who have changed their KD regimen or antiseizure medication (ASM) or vagus nerve stimulation (VNS) within the last 28 days. 2. Allergy, sensitivity to, or inability to metabolize any component of leucine enriched essential amino acid (LEAA). 3. Those who are pregnant or breastfeeding. 4. Patients who have received an investigational drug or product or participated in a drug study within 4 weeks before the first dose of leucine enriched essential amino acid (LEAA) powder. 5. Patients who have a clinically significant condition or have had either clinically relevant symptoms or a clinically significant illness in the 4 weeks prior to the Baseline Visit 1, other than epilepsy, that would negatively impact study participation, collection of study data, or pose a risk to the patient including liver disease. 6. Patients with history of suicidal ideation in past 6-months and suicidal behavior in past 2-years

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with treatment-related adverse eventsBaseline, 3 weeks, 12 weeksNumber of participants with treatment-related adverse events as reported by the trial participants.

Secondary

MeasureTime frameDescription
Number of participants with improved nutritional status as assessed by weight.Baseline, 3 weeks, 12 weeksNutritional status will be assessed by measuring participants' weight in kilograms.
Number of participants with improved nutritional status as assessed by body mass index (BMI).Baseline, 3 weeks, 12 weeksNutritional status will be assessed by measuring participants' weight in kilograms and height in meters to assess their body mass index (BMI).
Number of participants with improved nutritional status as assessed by serum ketone and glucose level.At each visit and on next daySerum ketone and glucose level will be measure before and after intake of investigational medicine.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORElizabeth Thiele, MD, PhD

Massachusetts General Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 23, 2026