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Genetic Analysis of Fraser Syndrome and Fryns Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00032877
Recruitment Status : Completed
First Posted : April 5, 2002
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

This study will examine blood or other tissue samples from patients with Fraser syndrome and patients with Fryns syndrome to try to identify the gene responsible for these diseases. Fraser syndrome is characterized by congenital abnormalities including cryptophthalmos (lack of eyelid formation), syndactyly (webbed fingers or toes) and abnormal genitalia. Patients may also have abnormalities of the nose, ears and larynx (voice box), cleft lip or palate, and kidney agenesis. Fryns syndrome is characterized by hernia through the diaphragm, cloudy cornea, coarse facial features, cleft lip or palate, abnormal fingers and toes, heart, kidney and brain malformations and hydrocephalus (accumulation of fluid around the brain). This protocol consists of laboratory study only; it does not involve patient care or patient counseling.

Patients with Fraser syndrome or Fryns syndrome are eligible for this study. Parents and healthy siblings of patients will also be included for genetic study, and parents of children with undiagnosed multiple congenital anomalies syndromes will be included for comparison study.

Participants will provide a blood sample (about 8 to 10 teaspoons from adults; 1 to 3 teaspoons from children) or sample of skin cells collected by swabbing the inner surface of the cheek. Some patients may undergo a skin biopsy, in which a small skin sample (about 1/8-inch in diameter) is surgically removed. The tissue samples will be used to obtain DNA (genetic material) for laboratory testing. A permanent cell line-a collection of cells grown in the laboratory from the original tissue specimen-will also be established to enable additional testing in the future.

Condition or disease
Fraser Syndrome Fryns Syndrome Chromosomal Abnormalities Abnormalities, Multiple

Detailed Description:

We would like to determine the molecular genetic etiology of two rare human malformation syndromes, Fraser syndrome (OMIM 219000) and Fryns syndrome (OMIM 229850). To date, we are unaware of molecular genetic studies that have been performed in either syndrome.

We are planning to perform molecular genetic studies on DNA specimens from affected individuals ascertained outside NIH by other clinicians and/or reported in the medical literature. Should these studies prove fruitful, we would plan to expand this work to a combined clinical and molecular study to fully delineate the phenotypes associated with these disorders.

We plan to collect DNA specimens from affected patients and from unaffected siblings and parents and to evaluate the specimens in the laboratory by linkage analysis, physical mapping, candidate gene characterization and mutation screening. If the causative genes(s) for either syndrome are identified, then mouse models of the diseases may be developed and cell biologic studies of normal and mutant proteins may be undertaken.

The cloning of these genes would enable better characterization of human developmental processes and improve patient counseling for individuals and families affected by these diseases.

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Study Type : Observational
Enrollment : 400 participants
Official Title: Molecular Genetic Analysis of Fraser Syndrome and Fryns Syndrome
Study Start Date : April 2002
Study Completion Date : February 2003

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


For Fraser syndrome, clinical criteria for inclusion will be by:

Satisfying diagnostic criteria for Fraser syndrome. These are at least two major criteria and one minor criterion (listed below) or one major criterion and four minor criteria.

Major criteria:



Abnormal genitalia

Sib with cryptophthalmos syndrome

Minor criteria:

Congenital malformation of the nose

Congenital malformations of the ears

Congenital malformation of the larynx

Cleft lip and/or palate

Skeletal defects

Umbilical hernia

Renal agenesis

Mental retardation

Cryptophthalmos with additional anomalies consistent with the phenotypic spectrum of Fraser syndrome but without satisfying diagnotisic for Fraser syndrome may also be considered sufficient for inclusion.

For Fryns syndrome, formal diagnostic criteria have not been published. The clinical criteria for inclusion will be:

Diaphragmatic hernia with at least one additional anomaly found in the spectrum of Fryns syndrome, including cleft lip and or palate, renal or genital malformations, cerebral malformations or hydrocephalus, corneal clouding, craniofacial dysmorphism and brachydactyly or nail hypoplasia, pulmonary agenesis or microphthalmia.

Patients with four or more of the additional anomalies may be included in the study.

Parents and unaffected siblings will be also included for linkage analysis.

Specimens of DNA or whole blood for DNA extraction collected outside the NIH may be accepted into the study if they are obtained through an approved NIH protocol consent form.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00032877

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United States, Maryland
National Human Genome Research Institute (NHGRI)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Human Genome Research Institute (NHGRI)
Layout table for additonal information Identifier: NCT00032877    
Other Study ID Numbers: 020148
First Posted: April 5, 2002    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: February 2003
Keywords provided by National Institutes of Health Clinical Center (CC):
Linkage Study
Gene Identification Study
Diaphragmatic Hernia
Fraser Syndrome
Fryns Syndrome
Hydrolethalus Syndrome
Positional Cloning
Additional relevant MeSH terms:
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Limb Deformities, Congenital
Fraser Syndrome
Congenital Abnormalities
Chromosome Disorders
Abnormalities, Multiple
Chromosome Aberrations
Hernia, Diaphragmatic
Pathologic Processes
Genetic Diseases, Inborn
Internal Hernia
Pathological Conditions, Anatomical
Musculoskeletal Abnormalities
Musculoskeletal Diseases
Disease Attributes
Bone Diseases, Developmental
Bone Diseases
Eye Abnormalities
Eye Diseases
Urogenital Abnormalities