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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Fatty Acid Oxidation Disorder Clear all
Completed Not applicable Interventional Results available

Effect of Caloric Restriction on Fat Oxidation in Obese Men and Women (Magellan II)

NCT01616082
View directory record Official record
Conditions
Obesity, Overweight, Metabolic Diseases
Interventions
Low Calorie Diet (LCD), Phentermine
Behavioral · Drug
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Identification of Muscle-specific Biomarkers of Fatty Acid Beta-oxidation

NCT01494025
View directory record Official record
Conditions
Obesity
Interventions
Diet and Exercise
Behavioral
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
30 Years to 50 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 6, 2021 · Synced Jul 23, 2026, 4:32 AM EDT
Withdrawn Phase 4 Interventional

Is Myopathy Part of Statin Therapy (IMPOSTER-16)

NCT00127335
View directory record Official record
Conditions
Myopathic Conditions
Interventions
cellulose placebo vs. atorvastatin
Drug
Lead sponsor
Scripps Health
Other
Eligibility
21 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 22, 2022 · Synced Jul 23, 2026, 4:32 AM EDT
Recruiting Phase 2 Interventional

Thyroid Hormone for Treatment of Nonalcoholic Steatohepatitis in Veterans

NCT05526144
View directory record Official record
Conditions
Nonalcoholic Steatohepatitis, Liver Fibrosis
Interventions
Synthroid, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 75 Years
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Phase 1 Interventional

A Phase 1b Study of the Safety of REN001 in Patients With Fatty Acid Oxidation Disorders

NCT03833128
View directory record Official record
Conditions
Fatty Acid Oxidation Disorders
Interventions
Low Dose REN001, High Dose REN001
Drug
Lead sponsor
Reneo Pharma Ltd
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
5
States / cities
Aurora, Colorado • Portland, Oregon • Pittsburgh, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2022 · Synced Jul 23, 2026, 4:32 AM EDT
Completed No phase listed Observational

Maternal Inborn Errors of Metabolism in Pregnancy: A Pregnancy Registry Protocol

NCT02322177
View directory record Official record
Conditions
Inborn Errors of Metabolism, Pregnancy, Acidemias
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
14 Years to 50 Years · Female only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of PPAR Ligands on Ectopic Fat Accumulation and Inflammation

NCT00470262
View directory record Official record
Conditions
Metabolic Syndrome X, Prediabetic State
Interventions
Fenofibrate 145mg PO QD, Pioglitazone 45 mg PO QD
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 20, 2016 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Phase 2 Interventional Results available

A Study of UX007 (Triheptanoin) in Participants With Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD)

NCT01886378
View directory record Official record
Conditions
Long-chain Fatty Acid Oxidation Disorders (LC-FAOD), Carnitine Palmitoyltransferase (CPT II) Deficiency, Very Long Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency, Longchain 3-hydroxy-acyl-CoA Dehydrogenase (LCHAD) Deficiency, Trifunctional Protein (TFP) Deficiency
Interventions
UX007
Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
6 Months and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
7
States / cities
Washington D.C., District of Columbia • Tampa, Florida • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Jul 23, 2026, 4:32 AM EDT
Recruiting Phase 2 Interventional

Telehealth Exercise Program Evaluating Fatigue and Physical Function in Rural Cancer Survivors

NCT07001241
View directory record Official record
Conditions
Cancer-related Fatigue, Breast Cancer, Prostate Cancer
Interventions
Telehealth Exercise Program
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 89 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
2
States / cities
Aurora, Colorado • Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Jul 23, 2026, 4:32 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Mitochondrial Dysfunction in Type 2 Diabetes Mellitus and Capacity for Fat Oxidation During Exercise

NCT00382473
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Overweight
Interventions
Aerobic exercise program - 8 weeks
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
28 Years to 55 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 24, 2014 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Phase 2 Interventional Results available

Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD) Extension Study for Subjects Previously Enrolled in Triheptanoin Studies

NCT02214160
View directory record Official record
Conditions
Carnitine Palmitoyltransferase (CPT I or CPT II) Deficiency, Very Long Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency, Long-chain 3-hydroxy-acyl-CoA Dehydrogenase (LCHAD) Deficiency, Trifunctional Protein (TFP) Deficiency, Carnitine-acylcarnitine Translocase (CACT) Deficiency
Interventions
UX007
Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
6 Months and older
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
9
States / cities
San Francisco, California • Washington D.C., District of Columbia • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2023 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Early Phase 1 Interventional

Oral Ketones and Exercise Among Patients With Long-chain Fatty Acid Oxidation Disorders

NCT05411835
View directory record Official record
Conditions
Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, Carnitine Palmitoyltransferase Deficiency 2, Very Long Chain Acyl Coa Dehydrogenase Deficiency, Trifunctional Protein Deficiency
Interventions
Nutritional Ketone Supplement, Isocaloric Placebo Supplement
Dietary Supplement
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 1, 2024 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Differential Metabolism of Dietary Fatty Acids

NCT00059254
View directory record Official record
Conditions
Obesity, Diabetes, Hyperlipidemia
Interventions
Oleic acid (OA), Palmitic Acid (PA)
Dietary Supplement
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 35 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2005
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Jul 23, 2026, 4:32 AM EDT
No Longer Available No phase listed Expanded access

Compassionate Use of Triheptanoin (C7) for Inherited Disorders of Energy Metabolism

NCT01461304
View directory record Official record
Conditions
Very Long-chain acylCoA Dehydrogenase (VLCAD) Deficiency, Carnitine Palmitoyltransferase Deficiencies (CPT1, CPT2), Mitochondrial Trifunctional Protein Deficiency, Long-chain Hydroxyacyl-CoA Dehydrogenase Deficiency, Glycogen Storage Disorders, Pyruvate Carboxylase Deficiency Disease, ACYL-CoA DEHYDROGENASE FAMILY, MEMBER 9, DEFICIENCY of, Barth Syndrome
Interventions
triheptanoin
Drug
Lead sponsor
Jerry Vockley, MD, PhD
Other
Eligibility
1 Month and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 9, 2021 · Synced Jul 23, 2026, 4:32 AM EDT
Suspended No phase listed Observational

Longitudinal Study of Mitochondrial Hepatopathies

NCT01148550
View directory record Official record
Conditions
Acute Liver Failure, Mitochondrial Diseases, End Stage Liver Disease, Respiratory Chain Deficiencies, Mitochondrial, Disorder of Fatty Acid Oxidation
Interventions
Not listed
Lead sponsor
Arbor Research Collaborative for Health
Other
Eligibility
Up to 18 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2029
U.S. locations
15
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fat Induced Insulin Resistance and Atherosclerosis

NCT02348190
View directory record Official record
Conditions
Other Fatty Acid Oxidation Disorders, Diabetes Mellitus, Insulin Resistance
Interventions
Lipid/heparin
Other
Lead sponsor
Temple University
Other
Eligibility
18 Years to 75 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2015 · Synced Jul 23, 2026, 4:32 AM EDT
Completed No phase listed Observational

Palmitate Breath Test to Assess Fatty Acid Oxidation in Non Alcoholic Fatty Liver Disease (NAFLD)

NCT02363309
View directory record Official record
Conditions
Fatty Liver
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
21 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 12, 2021 · Synced Jul 23, 2026, 4:32 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Fatty Acid Oxidation Disorders & Body Weight Regulation Grant

NCT00654004
View directory record Official record
Conditions
Trifunctional Protein Deficiency
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
7 Years to 40 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 21, 2013 · Synced Jul 23, 2026, 4:32 AM EDT
Recruiting No phase listed Observational

Systemic Biomarkers of Brain Injury From Hyperammonemia

NCT04602325
View directory record Official record
Conditions
Urea Cycle Disorder, Organic Acidemia, Maple Syrup Urine Disease, Glutaric Acidemia I, Fatty Acid Oxidation Disorder, Hypoxic-Ischemic Encephalopathy
Interventions
Not listed
Lead sponsor
Children's National Research Institute
Other
Eligibility
7 Years to 18 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 6, 2024 · Synced Jul 23, 2026, 4:32 AM EDT
Terminated No phase listed Observational

Long-Chain Fatty Acid Oxidation Disorders Online Disease Monitoring Program

NCT04812106
View directory record Official record
Conditions
Long-chain Fatty Acid Oxidation Disorders (LC-FAOD)
Interventions
No Intervention
Other
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
Not listed
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 17, 2022 · Synced Jul 23, 2026, 4:32 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Physical Inactivity and Insulin Resistance in Skeletal Muscle.

NCT00536211
View directory record Official record
Conditions
Metabolic Syndrome X, Insulin Resistance, Hypertension, Hypercholesterolemia, Obesity
Interventions
Exercise, Metformin
Behavioral · Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
20 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 3, 2021 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fatty Acid Oxidation Defects and Insulin Sensitivity

NCT02517307
View directory record Official record
Conditions
Very Long-chain Acyl-CoA Dehydrogenase Deficiency, Trifunctional Protein Deficiency, Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, Medium-chain Acyl-CoA Dehydrogenase Deficiency, Normal Volunteers, Carnitine Palmitoyltransferase II Deficiency, Myopathic
Interventions
Intralipid/Heparin, Glycerol/Saline, Hyperinsulinemic euglycemic clamp
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Jul 23, 2026, 4:32 AM EDT
Completed Phase 2 Interventional Results available

Study of Triheptanoin for Treatment of Long-Chain Fatty Acid Oxidation Disorder

NCT01379625
View directory record Official record
Conditions
Very Long-chain acylCoA Dehydrogenase (VLCAD) Deficiency, Carnitine Palmitoyltransferase 2 (CPT2) Deficiency, Mitochondrial Trifunctional Protein (TFP) Deficiency, Long-chain 3 hydroxyacylCoA Dehydrogenase (LCHAD) Deficiency
Interventions
Triheptanoin
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
7 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
Portland, Oregon • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Jul 23, 2026, 4:32 AM EDT
Active, not recruiting No phase listed Observational

Long-Chain Fatty Acid Oxidation Disorders In-Clinic Disease Monitoring Program

NCT04632953
View directory record Official record
Conditions
Long-chain Fatty Acid Oxidation Disorders (LC-FAOD)
Interventions
No Intervention
Other
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
Not listed
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2035
U.S. locations
13
States / cities
Phoenix, Arizona • San Francisco, California • Aurora, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jul 23, 2026, 4:32 AM EDT