Compassionate Use of Triheptanoin (C7) for Fatty Acid Oxidation Disorders and Glycogen Storage Disease
This is a compassionate use study to allow patients already taking triheptanoin (C7) through previous studies to continue to receive the supplement. It will also allow triheptanoin supplementation in patients with qualifying disorders if they are failing conventional therapy.
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, Type B
Acyl-coA Dehydrogenase, Type 9
|Study Type:||Expanded Access What is Expanded Access?|
|Official Title:||Dietary Therapy for Inherited Disorders of Mitochondrial Fatty Acid Oxidation and Glycogenosis|
|Study Start Date:||December 2009|
|Estimated Primary Completion Date:||November 2019 (Final data collection date for primary outcome measure)|
This study will treat children and adults who have documented deficiencies of mitochondrial fatty acid oxidation including disorders of the following enzymes: Carnitine-Acylcarnitine Translocase (CATR), Carnitine Palmitoyltransferase I and II (CPT I, CPT II), Very-Long Chain Acyl-CoA dehydrogenase (VLCAD), L-3-Hydroxy-Acyl-CoA Dehydrogenase (LCHAD), Acyl-CoA Dehydrogenase type 9 (ACAD9) and Mitochondrial Trifunctional Protein (TFP) with triheptanoin oil. This study is also open to patients with any type of glycogen storage disease or pyruvate carboxylase deficiency, type B.
Symptoms often persist with standard diet including supplementation with medium chain triglyceride oil. Preliminary data shows triheptanoin to reverse many of the clinical symptoms not well controlled by standard diet.
On study entry, clinical and laboratory assessments will be carried out with the subject on their usual home diet. A complete history and physical exam will be performed. An echocardiogram must be obtained within the past year or it will be performed on the day of study entry. Following analysis of their diet and a negative pregnancy test, subjects will receive a modified diet containing triheptanoin (up to 2 grams/kg/24 hours), or continued on their previously established triheptanoin dose; not to exceed RDA for fat, substituted for their MCT oil and/or natural fat. This will be given by g-tube or orally divided into 2 or more doses. The dose will be adjusted on the basis of safety laboratory monitoring at specific time points and for adverse symptoms. The remainder of their diet will be modified to maintain appropriate caloric intake and balance. Total calories appropriate for RDA will be prescribed.
Study subjects will continue the triheptanoin-supplemented diet for a period of 12 months and then be able to continue into an indefinite extension phase in this compassionate use study. Laboratory evaluations will take place at two, six, and twelve months, as well as every 12 months in the extension phase. Laboratory tests may be completed at a local lab and the results forwarded to the PI for review between visits in Pittsburgh. Patients will monitor their weight at home on a monthly basis. Interim metabolic evaluations will be arranged as needed on a clinical basis with the study PI or the subject's home metabolic physician. Following the initial 12 months of the protocol, subjects will be placed on a continuing schedule for maintenance of triheptanoin therapy with a yearly follow up visit for an undeterminable period of time. Echocardiograms must be completed on an annual basis and sent to the study PI to review.
Travel to Pittsburgh, PA at the start of the study and annually is the responsibility of the subjects. Additionally, there may be study costs that insurance will not cover and subjects will be responsible for covering them. Examples of out-of-pocket study costs subjects may incur in addition to travel expenses including the following: clinic visits, necessary laboratory testing, and echocardiograms. The study medication will be provided free of charge.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01461304
|Contact: Elizabeth McCracken, MS, CGC||412-692-5662|
|United States, Pennsylvania|
|University of Pittsburgh Division of Medical Genetics, Children's Hospital of Pittsburgh|
|Pittsburgh, Pennsylvania, United States, 15224|
|Contact: Elizabeth McCracken, MS, CGC firstname.lastname@example.org|
|Principal Investigator:||Jerry Vockley, MD, PhD||Children's Hospital of Pittsburgh, University of Pittsburgh|