Carbamoyl phosphate synthetase 1 deficiency

Last updated on 05-01-20

Last updated on 05-01-20

Last updated on 05-01-20

Are there any new research studies enrolling people with carbamoyl phosphate synthase 1 deficiency? How can I get my loved one seen at the National Institutes of Health?

Currently there are clinical trials and research studies enrolling people with carbamoyl phosphate synthase 1 deficiency. Instruction on finding these studies are provided below.

The Urea Cycle Disorders Consortium is a team of doctors, nurses, research coordinators, and research labs throughout the US, working together to improve the lives of people with Urea Cycle Disorders. The purpose of this consortium is to provide a way for patients to join with doctors and researchers by participating in research studies. The greater the collaboration between doctors and patients, the more we can learn about Urea Cycle Disorders.To read more about the contact registry, please click on the UCDC link above.

Urea Cycle Disorders Consortium Registry
Children's National Medical Center
Phone: 815-333-4014

Patients are seen at the NIH through participation in clinical trials. Clinical trials are medical research studies in which people participate as volunteers. They are a means of developing new treatments and medications for diseases and conditions. There are strict rules for clinical trials, which are monitored by the National Institutes of Health (NIH) and the U.S. Food and Drug Administration.

Some of the research studies at the NIH Clinical Center involve promising new treatments that may directly benefit patients. The Clinical Center does not charge patients for participation and treatment in clinical studies conducted at the NIH. In certain emergency circumstances, you may qualify for help with travel and other expenses.

You can search a database of clinical trials being conducted by the NIH at the Clinical Center in Bethesda, Maryland at the following link. You can also contact the Patient Recruitment and Public Liaison Office directly at 1-800-411-1222 to speak with a specialist, who can help you determine if your loved one is eligible for any clinical trials.

In addition, the NIH through the National Library of Medicine has developed to provide patients, family members, and members of the public with current information on clinical research studies. You can search this database to find clinical trials at the NIH Clinical Center as well as federally and privately supported trials being conducted at universities and medical centers throughout the United States and around the world. To find clinical trials, click on the link above and use "urea cycle disorders" or "carbamoyl phosphate synthase 1 deficiency" as your search term.

When you find a study of interest, review its "eligibility" criteria to determine its appropriateness. Use the study's contact information to learn more. Check these sites often for regular updates.

If you are interested in enrolling your loved one in a clinical trial, you can find helpful general information on clinical trials at the following Web page.

Resources on many charitable or special-fare flights to research and treatment sites and low-cost hospitality accommodations for outpatients and family members, as well as ambulance services, are listed on the Web site of the Office of Rare Diseases (ORD), National Institutes of Health

In addition, you can find research studies involving carbamoyl phosphate synthase 1 deficiency by searching the Research Portfolio Online Reporting Tool (RePORT). RePORT provides access to reports, data, and analyses of research activities at the National Institutes of Health (NIH), including information on NIH expenditures and the results of NIH-supported research. Although these projects may not conduct studies on humans, you may want to contact the investigators to learn more. To search for studies, click on the link above and enter "urea cycle disorder" or "carbamoyl phosphate synthase 1 deficiency" in the “Terms Search” box. Then click “Submit Query”.

Also, you may be interested in reading more about the following past scientific conference. Click on the conference title to learn more:

The Urea Cycle Disorders Satellite Symposium to the 11th International Congress on Inborn Errors of Metabolism (ICIEM) – Overcoming Barriers – New Developments and Future Directions for Urea Cycle Disorders

Last updated on 05-01-20

What is carbamoyl phosphate synthetase 1 deficiency?

Carbamoyl phosphate synthetase I deficiency is type of urea cycle disorder. It causes toxic levels of ammonia to accumulate in the blood. Signs and symptoms in newborns may include a lack of energy, unwillingness to eat, seizures, unusual body movements, and poorly controlled breathing or body temperature. Complications may include coma, developmental delay, and learning disability. Some individuals have a less severe form of the deficiency, and have milder symptoms that may not appear until later in life. Carbamoyl phosphate synthetase I deficiency is caused by mutations in the _CPS1 _gene and is inherited in an autosomal recessive fashion.

Last updated on 05-01-20

Last updated on 05-01-20

Last updated on 05-01-20

Newborn Screening

ornithine transcarbamylase deficiency

The Newborn Screening Coding and Terminology Guide has information on the standard codes used for newborn screening tests. Using these standards helps compare data across different laboratories. This resource was created by the National Library of Medicine.

Last updated on 04-27-20

Name: Metabolic Support UK 5 Hilliards Court Sandpiper Way
Chester Business Park
Chester, CH4 9QP, United Kingdom
Phone: 0845 241 2173 Toll Free: 0800 652 3181 Email: Url:
Name: National Urea Cycle Disorders Foundation 75 South Grand Avenue
Pasadena, CA, 91105, United States
Phone: +1-626-578-0833 Toll Free: 800-38-NUDCF (386-8233) Email: Url:
Zhang G, Chen Y, Ju H, Bei F, Li J, Wang J, Sun J, Bu J. Carbamoyl phosphate synthetase 1 deficiency diagnosed by whole exome sequencing. J Clin Lab Anal. Feb 2018; 32(2). e22241. Reference Link Diez-Fernandez C, Häberle J. Targeting CPS1 in the treatment of Carbamoyl phosphate synthetase 1 (CPS1) deficiency, a urea cycle disorder J Expert Opin Ther Targets. Apr 2017; 21(4). 391-399. Reference Link Fan L, Zhao J, Jiang L, et al. Molecular, biochemical, and clinical analyses of five patients with carbamoyl phosphate synthetase 1 deficiency J Clin Lab Anal. 2020; 34(4). e23124. Reference Link Carbamoyl Phosphate Synthetase 1 Deficiency. (CPS1 deficiency) National Organization for Rare Disorders (NORD). Updated 2017; Reference Link Díez-Fernández C, Gallego J, Häberle J, Cervera J, Rubio V. The Study of Carbamoyl Phosphate Synthetase 1 Deficiency Sheds Light on the Mechanism for Switching On/Off the Urea Cycle J Genet Genomics. 2015; 42(5). 249-260.

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