Anaplerotic Therapy Using Triheptanoin for Patients With Glycogen Storage Disease Type I

Summary

This study will be an open-label, prospective, interventional feasibility pilot project to study the efficacy, safety, and tolerability of UX007 (triheptanoin) on reducing hypoglycemic events in patients with GSD I. Subjects will serve as their own control. Five (5) subjects who are treatment naïve to UX007 (triheptanoin) and are already on standard dietary therapy for GSDI will be enrolled. The primary objective is to evaluate the efficacy, safety, and tolerability of UX007 (triheptanoin) in patients with GSD I. The secondary objectives include evaluating the effect of UX007 (triheptanoin) on maintaining the duration of normoglycemia between meals based on glucose monitoring (Preventing and reducing the frequency of hypoglycemia); reduction/stabilization of the dose of cornstarch; and the prevention of increased liver steatosis based on ultrasound with elastography.

Timeline

Start

2020-10-16

Primary completion

2021-10-21

Completion

2021-10-21

Publications

• Background Chou JY, Matern D, Mansfield BC, Chen YT. Type I glycogen storage diseases: disorders of the glucose-6-phosphatase complex. Curr Mol Med. 2002 Mar;2(2):121-43. doi: 10.2174/1566524024605798.
• Background Fernandes J, Pikaar NA. Ketosis in hepatic glycogenosis. Arch Dis Child. 1972 Feb;47(251):41-6. doi: 10.1136/adc.47.251.41.
• Background Rasmussen BB, Holmback UC, Volpi E, Morio-Liondore B, Paddon-Jones D, Wolfe RR. Malonyl coenzyme A and the regulation of functional carnitine palmitoyltransferase-1 activity and fat oxidation in human skeletal muscle. J Clin Invest. 2002 Dec;110(11):1687-93. doi: 10.1172/JCI15715.
• Background Das AM, Lucke T, Meyer U, Hartmann H, Illsinger S. Glycogen storage disease type 1: impact of medium-chain triglycerides on metabolic control and growth. Ann Nutr Metab. 2010;56(3):225-32. doi: 10.1159/000283242. Epub 2010 Mar 30.
• Background Nagasaka H, Hirano K, Ohtake A, Miida T, Takatani T, Murayama K, Yorifuji T, Kobayashi K, Kanazawa M, Ogawa A, Takayanagi M. Improvements of hypertriglyceridemia and hyperlacticemia in Japanese children with glycogen storage disease type Ia by medium-chain triglyceride milk. Eur J Pediatr. 2007 Oct;166(10):1009-16. doi: 10.1007/s00431-006-0372-0. Epub 2007 Jan 6.
• Background Gu L, Zhang GF, Kombu RS, Allen F, Kutz G, Brewer WU, Roe CR, Brunengraber H. Parenteral and enteral metabolism of anaplerotic triheptanoin in normal rats. II. Effects on lipolysis, glucose production, and liver acyl-CoA profile. Am J Physiol Endocrinol Metab. 2010 Feb;298(2):E362-71. doi: 10.1152/ajpendo.00384.2009. Epub 2009 Nov 10.
• Background Farah BL, Sinha RA, Wu Y, Singh BK, Lim A, Hirayama M, Landau DJ, Bay BH, Koeberl DD, Yen PM. Hepatic mitochondrial dysfunction is a feature of Glycogen Storage Disease Type Ia (GSDIa). Sci Rep. 2017 Mar 20;7:44408. doi: 10.1038/srep44408.
• Background Roe CR, Mochel F. Anaplerotic diet therapy in inherited metabolic disease: therapeutic potential. J Inherit Metab Dis. 2006 Apr-Jun;29(2-3):332-40. doi: 10.1007/s10545-006-0290-3.

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Indications