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Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD)

Disease/Condition(s): long-chain fatty acid oxidation disorders (LC-FAOD)
What is Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD)?

LC-FAOD result from defective enzymes involved in the transport and /or catabolism of long-chain fatty acids and include the following types 1-4:

  • Very long-chain acyl-CoA dehydrogenase (VLCAD) deficiency (ACADVL)
  • Carnitine palmitoyltransferase I (CPT I) deficiency (CPT1A)
  • Carnitine palmitoyltransferase II (CPT II) deficiency (CPT2)
  • Long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency (HADHA)
  • Trifunctional protein (TFP) deficiency (HADHA, HADHB)
  • Carnitine-acylcarnitine translocase (CACT) deficiency (SLC25A20)

Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD) Sponsored Testing Program Overview:

Long-Chain Fatty Acid Oxidation Disorders

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What is the role of testing for Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD)?

What is the Program?

This program provides sponsored, no-charge genetic testing for individuals suspected of having long-chain fatty acid oxidation disorders (LC-FAOD).

Long-chain fatty acid oxidation disorders are a group of six rare autosomal recessive disorders that are caused by defects in the mitochondrial carnitine shuttle or β-oxidation enzymes.

Ultragenyx receives de-identified patient data from this program, but at no time does Ultragenyx receive patient-identifiable information. Ultragenyx uses healthcare professional contact information for research and commercial purposes.

Program Eligibility

To be eligible for this program, patients in the US and Canada must meet at least one of the criteria below.

  • Has a completed UltraCare Start Form for LC-FAOD (if available, please provide a copy of abnormal biochemical confirmatory labs)

  • Is suspected of having or has been diagnosed with a long-chain fatty acid oxidation disorder AND a plasma acylcarnitine test has either been performed (regardless of result, abnormal or normal) or has been ordered.

Providing a copy of plasma acylcarnitines results, or any other confirmatory tests, when available, is strongly encouraged. These results are helpful for variant interpretation and in some cases can make a difference for the final interpretation of the variant.

Testing

How to participate

Choose between the following testing options:

Invitae

Invitae Fatty Acid Oxidation Defects Panel

Genes Evaluated: ACAD9, ACADM, ACADS, ACADSB, ACADVL, CPT1A, CPT2, ETFA, ETFB, ETFDH, FLAD1, HADH, HADHA, HADHB, HMGCL, HMGCS2, MLYCD, NADK2, SLC22A5, SLC25A20, SLC25A32, SLC52A1, SLC52A2, SLC52A3, TANGO2

How To Order

Collect your patient’s specimen using an Invitae collection kit and return it. Use the label provided to ship most samples at no additional charge from the US and Canada.

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FAQs

Program Information

What is the Long-Chain Fatty Acid Oxidation Disorders Testing Program?

This program offers genetic testing to diagnose various types of Long-Chain Fatty Acid Oxidation Disorders, a group of genetic metabolic disorders characterized by the body’s inability to break down long-chain fatty acids into energy. The program aims to identify specific genetic mutations responsible for these disorders, facilitating accurate diagnosis and appropriate management.

Who is eligible for the LC-FAOD testing program?

Eligibility for the program includes individuals who exhibit symptoms of LC-FAOD, such as hypoglycemia, muscle weakness, and cardiomyopathy, particularly during fasting or illness. Infants with abnormal newborn screening results suggestive of LC-FAOD are also candidates. A healthcare provider must refer patients for this specialized genetic testing.

What types of genetic tests are included in this program?

The testing typically involves comprehensive genetic panels that assess genes known to affect long-chain fatty acid metabolism, such as ACADVL, CPT1, CPT2, and VLCAD, among others. These tests detect mutations that can lead to various forms of LC-FAOD, using techniques like sequencing and deletion/duplication analysis.

How can healthcare providers enroll patients in the LC-FAOD program?

Healthcare providers can enroll patients by submitting an application that includes the patient’s detailed medical history, clinical presentation, and any previous laboratory findings. This application ensures that the genetic testing is appropriate based on the individual’s symptoms and biochemical markers.

What are the benefits of participating in the LC-FAOD program?

Participants benefit from receiving a precise genetic diagnosis, which is essential for determining the specific type of LC-FAOD. This information can guide dietary management and treatment plans, improve outcomes, and help in assessing the risk to family members.

How long does it take to receive results from the genetic testing?

Results are generally available within a few weeks from the time the laboratory receives the sample. The exact timing can vary based on the complexity of the genetic analysis. Once available, results are communicated through the referring healthcare provider, who will help interpret the findings and discuss next steps.

More Information About This Program

  • Patients that meet the eligibility criteria may receive one test at no cost.
  • No patients, providers, and/or third-party payers (including commercial health plans and government health care programs) will be billed for the testing covered under the program.
  • The ordering physician will not receive any fees or other compensation in connection with the Sponsored Testing Program, such as for specimen collection, handling, or data reporting.
  • Patients meeting the above eligibility criteria, as well as their treating health care providers, are not required to order, purchase, prescribe, and/or obtain any other product or service from sponsor, the labs or any of their affiliates.
  • The performing labs reserve the right to rescind, revoke, or amend the program for any reason without notice.
  • Program is not valid where prohibited by law.
  • No identifiable patient data will be shared with sponsor as part of this program.

About Ultragenyx

Ultragenyx logo

Ultragenyx is a biopharmaceutical company committed to bringing novel products to patients for the treatment of serious rare and ultrarare genetic diseases. The company has built a diverse portfolio of approved therapies and product candidates aimed at addressing diseases with high unmet medical need and clear biology for treatment, for which there are typically no approved therapies treating the underlying disease.

The company is led by a management team experienced in the development and commercialization of rare disease therapeutics. Ultragenyx’s strategy is predicated upon time- and cost-efficient drug development, with the goal of delivering safe and effective therapies to patients with the utmost urgency.

For more information on Ultragenyx, please visit the company’s website at: www.ultragenyx.com.

About DOJOLVI®

DOJOLVI® (triheptanoin) is a pharmaceutical-grade, odd-carbon medium-chain triglyceride developed by Ultragenyx for the treatment of pediatric and adult patients with long-chain fatty acid oxidation disorders (LC-FAOD). It serves as a source of calories and fatty acids, designed to provide an alternative energy source for patients who cannot convert long-chain fatty acids into energy. DOJOLVI is the first FDA-approved therapy for LC-FAOD and is now available to patients in the U.S. through Ultragenyx’s UltraCare® support program.

References

1. Knottnerus SJG, Bleeker JC, Wüst RCI, et al. Rev Endocr Metab Disord. 2018;19(1):93-106.
2. Wajner M, Amaral AU. Biosci Rep. 2015;36(1):e00281.
3. Lindner M, Hoffmann GF, Matern D. J Inherit Metab Dis. 2010;33(5):521-526.
4. Wanders RJ, Ruiter JP, IJLst L, Waterham HR, Houten SM. J Inherit Metab Dis. 2010;33(5):479-494.

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