PMID- 30740733 OWN - NLM STAT- MEDLINE DCOM- 20200401 LR - 20220408 IS - 1573-2665 (Electronic) IS - 0141-8955 (Print) IS - 0141-8955 (Linking) VI - 42 IP - 1 DP - 2019 Jan TI - Results from a 78-week, single-arm, open-label phase 2 study to evaluate UX007 in pediatric and adult patients with severe long-chain fatty acid oxidation disorders (LC-FAOD). PG - 169-177 LID - 10.1002/jimd.12038 [doi] AB - Long-chain fatty acid oxidation disorders (LC-FAOD) are rare disorders characterized by acute crises of energy metabolism and severe energy deficiency that may present with cardiomyopathy, hypoglycemia, and/or rhabdomyolysis, which can lead to frequent hospitalizations and early death. An open-label Phase 2 study evaluated the efficacy of UX007, an investigational odd-carbon medium-chain triglyceride, in 29 subjects with severe LC-FAOD. UX007 was administered over 78 weeks at a target dose of 25-35% total daily caloric intake (mean 27.5%). The frequency and duration of major clinical events (hospitalizations, emergency room visits, and emergency home interventions due to rhabdomyolysis, hypoglycemia, and cardiomyopathy) occurring during 78 weeks of UX007 treatment was compared with the frequency and duration of events captured retrospectively from medical records for 78 weeks before UX007 initiation. The mean annualized event rates decreased from 1.69 to 0.88 events/year following UX007 initiation (p = 0.021; 48.1% reduction). The mean annualized duration rate decreased from 5.96 to 2.96 days/year (p = 0.028; 50.3% reduction). Hospitalizations due to rhabdomyolysis, the most common event, decreased from 1.03 to 0.63 events/year (p = 0.104; 38.7% reduction). Initiation of UX007 eliminated hypoglycemia events leading to hospitalization (from 11 pre-UX007 hospitalizations, 0.30 events/year vs. 0; p = 0.067) and intensive care unit (ICU) care (from 2 pre-UX007 ICU admissions, 0.05 events/year vs. 0; p = 0.161) and reduced cardiomyopathy events (3 events vs. 1 event; 0.07 to 0.02 events/year; 69.7% decrease). The majority of treatment-related adverse events (AEs) were mild to moderate gastrointestinal symptoms, including diarrhea, vomiting, and abdominal or gastrointestinal pain, which can be managed with smaller, frequent doses mixed with food. CI - (c) 2018 The Authors. Journal of Inherited Metabolic Disease published by John Wiley & Sons Ltd on behalf of SSIEM. FAU - Vockley, Jerry AU - Vockley J AD - School of Medicine and Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. AD - Children's Hospital of Pittsburgh, UPMC, 4401 Penn Avenue, Pittsburgh, Pennsylvania, 15224, USA. FAU - Burton, Barbara AU - Burton B AD - Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA. FAU - Berry, Gerard T AU - Berry GT AD - Boston Children's Hospital, Boston, Massachusetts, USA. FAU - Longo, Nicola AU - Longo N AD - University of Utah, Salt Lake City, Utah, USA. FAU - Phillips, John AU - Phillips J AD - Vanderbilt University Medical Center, Nashville, Tennessee, USA. FAU - Sanchez-Valle, Amarilis AU - Sanchez-Valle A AD - USF Health, Morsani College of Medicine, Tampa, Florida, USA. FAU - Tanpaiboon, Pranoot AU - Tanpaiboon P AD - Children's National Health System, Washington, District of Columbia, USA. FAU - Grunewald, Stephanie AU - Grunewald S AD - Great Ormond Street, UCL Institute of Child Health, London, UK. FAU - Murphy, Elaine AU - Murphy E AD - National Hospital for Neurology and Neurosurgery, London, UK. FAU - Bowden, Alexandra AU - Bowden A AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. FAU - Chen, Wencong AU - Chen W AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. FAU - Chen, Chao-Yin AU - Chen CY AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. FAU - Cataldo, Jason AU - Cataldo J AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. FAU - Marsden, Deborah AU - Marsden D AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. FAU - Kakkis, Emil AU - Kakkis E AD - Ultragenyx Pharmaceutical Inc., Novato, California, USA. LA - eng GR - R01 DK078775/DK/NIDDK NIH HHS/United States GR - UL1 TR001102/TR/NCATS NIH HHS/United States GR - UL1 TR002538/TR/NCATS NIH HHS/United States PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Inherit Metab Dis JT - Journal of inherited metabolic disease JID - 7910918 RN - 0 (Fatty Acids) RN - 0 (Triglycerides) SB - IM MH - Adolescent MH - Adult MH - Cardiomyopathies/metabolism MH - Child MH - Child, Preschool MH - Fatty Acids/*metabolism MH - Female MH - Humans MH - Hypoglycemia/metabolism MH - Infant MH - Infant, Newborn MH - Lipid Metabolism, Inborn Errors/*drug therapy/metabolism MH - Male MH - Middle Aged MH - Oxidation-Reduction/*drug effects MH - Retrospective Studies MH - Rhabdomyolysis/metabolism MH - Triglycerides/*administration & dosage MH - Young Adult PMC - PMC6348052 MID - NIHMS1004062 EDAT- 2019/02/12 06:00 MHDA- 2020/04/02 06:00 PMCR- 2020/01/01 CRDT- 2019/02/12 06:00 PHST- 2019/02/12 06:00 [entrez] PHST- 2019/02/12 06:00 [pubmed] PHST- 2020/04/02 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.1002/jimd.12038 [doi] PST - ppublish SO - J Inherit Metab Dis. 2019 Jan;42(1):169-177. doi: 10.1002/jimd.12038.