study started
completion around



The primary objective of this study is to assess the long-term safety, including pregnancy, infant, and lactation outcomes, of patients with LC-FAOD who are enrolled in the DMP.

Official Title

Long-Chain Fatty Acid Oxidation Disorders In-Clinic Disease Monitoring Program (LC-FAOD DMP)


The LC-FAOD DMP is a global observational long-term prospective outcomes study aiming to collect information for up to 10 years from adult and pediatric patients with LC-FAOD, regardless of disease management, including treatment with triheptanoin, and those who have previously participated in triheptanoin clinical trials or Expanded Access Program (EAP).

Patients enrolling in the LC-FAOD DMP will be managed at the discretion of their physicians and may or may not be treated with triheptanoin during the course of the study. Patients will only have access to triheptanoin through authorized commercial use (if approved in their country) or available EAP but not from the LC-FAOD DMP itself.


Long-chain Fatty Acid Oxidation Disorders (LC-FAOD), CACT Deficiency, Carnitine Acylcarnitine Translocase Deficiency, CPT1, CPT2, Carnitine Palmitoyltransferase Deficiencies, VLCAD, Very Long Chain Acyl Coa Dehydrogenase Deficiency, LCHAD Deficiency, Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, TFP Deficiency, Trifunctional Protein Deficiency, Triheptanoin Naïve, Triheptanoin Naïve Transitioned to Triheptanoin


You can join if…

  • Confirmed diagnosis of any LC-FAOD sub-type. Diagnosis must be confirmed by results of acylcarnitine profiles, and/or genetic testing results obtained from medical records or equivalent documentation.
  • Willing and able to comply with all study procedures.
  • Willing and able to provide consent or, if a minor, provide assent and informed consent by their legally authorized representative.
  • Female of child-bearing potential who become pregnant during the study will be invited to remain in the study. Pregnant females with LC-FAOD will be informed of the study and invited to enroll.
  • Pregnant females not affected by LC-FAOD carrying a fetus affected by LC-FAOD with confirmed pre-natal diagnosis of LC-FAOD.

You CAN'T join if...

  • Presence of a concurrent disease or condition that would interfere with study participation or affect patient's safety in the opinion of the Investigator.
  • Presence or history of any condition that, in the view of the Investigator, places the patient at high risk of not completing the study or would affect the interpretation of study results.


  • University of California San Francisco accepting new patients
    San Francisco California 94158 United States
  • Phoenix Children's Hospital not yet accepting patients
    Phoenix Arizona 85016 United States
  • University of Utah accepting new patients
    Salt Lake City Utah 84108 United States


accepting new patients
Start Date
Completion Date
Ultragenyx Pharmaceutical Inc
Ultragenyx Patient Advocacy/LC-FAOD Disease Information
Study Type
Expecting 200 study participants
Last Updated