Study of Inborn Errors of Cholesterol Synthesis and Related Disorders

Lysosomal Storage Disease Clinical Trial

Official title:

Investigations Into Inborn Errors of Cholesterol Synthesis and Related Disorders

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT00046202
• Other study ID #: 020311
• Secondary ID: 02-CH-0311
• Status: Recruiting
• Start date: October 9, 2002

Study information

• Verified date: September 22, 2023
• Source: National Institutes of Health Clinical Center (CC)
• Contact: Nicole M Farhat, C.R.N.P.
• Phone: (301) 496-9135
• Email: nicole.farhat[@]nih.gov
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

This study will investigate the cause and medical problems associated with a group of genetic disorders known as inborn errors of cholesterol synthesis, in which the body does not produce cholesterol. People with this disorder may have birth defects and learning and behavioral problems.

People with an inborn error of cholesterol synthesis and related disorders, including Smith-Lemli-Opitz syndrome, lathosterolosis, desmosterolosis, X-linked dominant chondrodysplasia, CHILD syndrome, Greenberg dysplasia, and some cases of Antley-Bixler syndrome, may be eligible for this study. People who are carriers of the disorders also may enroll.

Participants and family members will provide blood and urine samples, as well as other tissue samples collected during medically indicated procedures such as biopsy or surgery. These tissues may include, for example, gallstones, cataracts, cerebrospinal fluid, amniotic fluid, lymph tissue, and DNA samples. In rare instances, a skin biopsy may be requested to aid in establishing a diagnosis.

Medical information will also be gathered from medical records, photographs, and X-rays.

Description:

It is known that inborn errors of cholesterol synthesis give rise to human malformation/cognitive impairment syndromes. Smith-Lemli-Opitz syndrome is the prototypical example of a post-squalene inborn error of metabolism; however, this group of disorders now includes lathosterolosis, desmosterolosis, X-linked dominant chondrodysplasia (CDPX2), CHILD syndrome, HEM dysplasia, and some cases of Antley-Bixler syndrome (1-3). Due to the extremely rare occurrence of some of these disorders, the full phenotypic spectrum has yet to be defined. Cholesterol transport in cells can also cause a disorder known as Niemann-Pick Disease type C (NPC). NPC belongs to a group of disorders known as lysosomal storage disorders. The purpose of this protocol is to 1) allow for the collection of biomaterial and medical information that can be studied to gain insight into the pathological processes; 2) allow for the collection of DNA and medical information from individuals who have a phenotypic resemblance to known disorders of cholesterol synthesis, lysosomal storage disorders or individuals who may be carriers of these disorders.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 1000
• Accepts healthy volunteers: No
• Gender: All
• Age group: N/A and older

Eligibility

• INCLUSION CRITERIA:

Subjects will be eligible for this study if they have or are suspected to have an inborn error of cholesterol synthesis or if they are related to a proband with a suspected inborn error of cholesterol synthesis. No exclusions will be made based on gender, ethnicity or age.

Related Conditions & MeSH terms

• Cholesterol Metabolism
• Lysosomal Storage Disease
• Lysosomal Storage Diseases

Locations

Country	Name	City	State
United States	National Institutes of Health Clinical Center	Bethesda	Maryland

Sponsors (1)

Lead Sponsor	Collaborator
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Country where clinical trial is conducted

United States, 

References & Publications (3)

Kelley RI, Hennekam RC. The Smith-Lemli-Opitz syndrome. J Med Genet. 2000 May;37(5):321-35. doi: 10.1136/jmg.37.5.321. — View Citation

Kelley RI, Kratz LE, Glaser RL, Netzloff ML, Wolf LM, Jabs EW. Abnormal sterol metabolism in a patient with Antley-Bixler syndrome and ambiguous genitalia. Am J Med Genet. 2002 Jun 15;110(2):95-102. doi: 10.1002/ajmg.10510. — View Citation

Nwokoro NA, Wassif CA, Porter FD. Genetic disorders of cholesterol biosynthesis in mice and humans. Mol Genet Metab. 2001 Sep-Oct;74(1-2):105-19. doi: 10.1006/mgme.2001.3226. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	sample collection	collect sample to study rare manifestations or disease	event driven upon enrollment

External Links

•   NIH Clinical Center Detailed Web Page