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Home | See UCDifferently for Patients and Caregivers

FOR PEOPLE WITH UREA CYCLE DISORDERS (UCDs)…

Even small increases in ammonia can cause brain damage if not treated quickly

Ammonia is neurotoxic, and small increases over time may go unnoticed.

These small increases may cause brain damage
and lead to emergency room visits. Even though smaller increases in ammonia levels can be hard to see, they can still cause brain damage.

FOR PEOPLE WITH UREA CYCLE DISORDERS (UCDs)…

Even small increases in ammonia can cause brain damage if not treated quickly

Ammonia is neurotoxic, and small increases over time may go unnoticed

These small increases may cause brain damage
and lead to emergency room visits. Even though smaller increases in ammonia levels can be hard to see, they can still cause brain damage.

Increases
in ammonia levels

Do you know how to recognize an increase in ammonia?
Learn about the impact
of ammonia levels.

Neurotoxicity

Treating
UCDs

Work with a team of healthcare professionals who can help decide which treatment plan is best for you or your loved one.

Treatment

The challenges of taking UCD treatments

Tolerability, administration, cost, and access can get in the way of taking treatment as prescribed.

Treatment challenges

Hope for people with UCDs

Studies have shown that additional UCD treatment options may help people avoid challenges to taking therapy and help reduce the risk of future brain damage and hyperammonemic crises.

The future

If you or a loved one is experiencing symptoms or needs help managing a UCD, talk to a doctor as soon as possible.

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up-to-date

Sign up to get updates and more information about UCDs.

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stay up-to-date

Sign up to get updates and more information about UCDs.

Sources

  1. Enns GM, Porter MH, Francis-Sedlak M, Burdett A, Vockley J. Perspectives on urea cycle disorder management: results of a clinician survey. Mol Genet Metab. 2019;128(1-2):102-108.
  2. Gropman AL, Prust M, Breeden A, Fricke S, VanMeter J. Urea cycle defects and hyperammonemia: effects on functional imaging. Metab Brain Dis. 2013;28(2):269-275.
  3. Gerstein MT, Markus AR, Gianattasio KZ, et al. Choosing between medical management and liver transplant in urea cycle disorders: a conceptual framework for parental treatment decision-making in rare disease. J Inherit Metab Dis. 2020;43(3):438-458.
  4. Guffon N, Kibleur Y, Copalu W, Tissen C, Breitkreutz J. Developing a new formulation of sodium phenylbutyrate. Arch Dis Child. 2012;97(12):1081-1085.
  5. Shchelochkov OA, Dickinson K, Scharschmidt BF, Lee B, Marino M, Le Mons C. Barriers to drug adherence in the treatment of urea cycle disorders: assessment of patient, caregiver and provider perspectives. Mol Genet Metab Rep. 2016;8:43-47.
  6. Peña-Quintana L, Llarena M, Reyes-Suárez D, Aldámiz-Echevarria L. Profile of sodium phenylbutyrate granules for the treatment of urea-cycle disorders: patient perspectives. Patient Prefer Adherence. 2017;11:1489-1496.
  7. Kibleur Y, Guffon N. Long-term follow-up on a cohort temporary utilization authorization (ATU) survey of patients treated with Pheburane (sodium phenylbutyrate) taste-masked granules. Paediatr Drugs. 2016;18(2):139-144.