Chromosome 18 Clinical Research Center (Chromosome18)
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ClinicalTrials.gov Identifier: NCT00227253 |
Recruitment Status
:
Recruiting
First Posted
: September 27, 2005
Last Update Posted
: September 29, 2017
|
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Condition or disease | Intervention/treatment |
---|---|
Chromosome Aberrations Growth Hormone Deficiency Hypomyelination | Procedure: Determination of growth hormone status Procedure: Measurement of growth, thyroid and sex hormone levels Procedure: Behavior and neuropsychometric evaluations Procedure: Audiological and ear, nose and throat examination Procedure: Magnetic resonance imaging of the brain Procedure: Dysmorphology evaluation Procedure: Neurology examination Procedure: Dental evaluation Procedure: Speech pathology evaluation Procedure: Psychiatric evaluation Procedure: Orthopedic evaluation Procedure: Ophthalmologic evaluation Procedure: Gastrointestinal evaluation |
Protocol Summary:
The hypotheses are:
- growth hormone (GH) deficiency in children with chromosome 18 deletions is accompanied by cognitive and microstructural abnormalities of the brain that can be ameliorated by GH treatment; and
- the physical and behavioral findings in individuals with abnormalities of chromosome 18 are due to the genes that present in a non-diploid number.
Therefore, correlation of the physical and behavioral findings with the extent of the deletion will help identify the genes involved. An understanding of the molecular mechanisms of the phenotype will provide the insight necessary to devise appropriate therapies.
Our goals are:
- to be the international medical and education resource for the families of individuals with chromosome 18 abnormalities;
- to perform and facilitate both clinical and basic research relating to the disorders of chromosome 18; and
- to devise treatments to help these individuals overcome the negative effects of their chromosome abnormality.
To attain these goals, the study has the following specific aims:
- perform genotypic molecular analysis on the DNA of the subjects and their biological parents to determine the genotype of the affected individual;
-
gather comprehensive clinical data on individuals with chromosome 18 abnormalities including:
- determination of growth hormone levels;
- measurement of corticotrophin, thyroid and sex hormones;
- psychiatric and neuropsychological evaluations;
- audiology and ENT testing;
- brain MRI scan;
- genetic dysmorphology examination;
- neurology exam;
- dental exam;
- speech pathology evaluation;
- gastrointestinal exam;
- orthopedic exam;
- ophthalmology exam.
The phenotypical assessment will be longitudinal; therefore, the participants will have a wide age range. This extensive range plus the fact that some participants will be assessed multiple times means that not all components of the clinical studies will be appropriate for every subject at every visit.
Study Type : | Observational |
Estimated Enrollment : | 1000 participants |
Observational Model: | Other |
Time Perspective: | Other |
Official Title: | The Chromosome 18 Clinical Research Center |
Study Start Date : | September 1993 |
Estimated Primary Completion Date : | December 2025 |
Estimated Study Completion Date : | December 2025 |

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Procedure: Determination of growth hormone status
- Primary [ Time Frame: Ongoing ]Provide definitive medical and education resources for the families of individuals with chromosome 18 abnormalities
Biospecimen Retention: Samples With DNA

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Ages Eligible for Study: | Child, Adult, Senior |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Non-Probability Sample |
Must have a confirmed diagnosis of Chromosome 18 or be the parent/guardian of a child with Chromosome 18
- Subject must be at least one year of age to participate in the clinical examination aspect of the study (due to issues of venous access and blood volume required to complete studies)
- General health status: good
Inclusion Criteria:
- Must have a confirmed diagnosis of Chromosome 18 or be the parent/guardian of a child with Chromosome 18
- Subject must be at least one year of age to participate in the clinical examination aspect of the study (due to issues of venous access and blood volume required to complete studies)
- General health status: good
Exclusion Criteria:
- Pregnant women
- Dead fetuses
- Prisoners
- Non-viable neonates or neonates of uncertain viability

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 ClinicalTrials.gov identifier (NCT number): NCT00227253
Contact: Jannine D. Cody, Ph.D. | 210-567-9220 | cody@uthscsa.edu | |
Contact: Daniel E. Hale, M.D. | 210-567-5284 | hale@uthscsa.edu |
United States, Texas | |
University of Texas Health Science Center at San Antonio | Recruiting |
San Antonio, Texas, United States, 78229 | |
Contact: Jannine D Cody, Ph.D. 210-567-9220 cody@uthscsa.edu | |
Contact: Daniel E Hale, M.D. 210-567-5284 hale@uthscsa.edu | |
Principal Investigator: Jannine D. Cody, Ph.D. | |
Sub-Investigator: Peter T. Fox, M.D. | |
Principal Investigator: Daniel E. Hale, M.D. | |
Sub-Investigator: Brian P Perry, M.D. |
Principal Investigator: | Jannine D. Cody, Ph.D. | The University of Texas Health Science Center at San Antonio | |
Principal Investigator: | Daniel E. Hale, M.D. | The University of Texas Health Science Center at San Antonio |
Additional Information:
Publications of Results:
Responsible Party: | The University of Texas Health Science Center at San Antonio |
ClinicalTrials.gov Identifier: | NCT00227253 History of Changes |
Other Study ID Numbers: |
Chromosome 18 IRB: 990-9000-318 ( Other Identifier: UTHSCSA IRB ) |
First Posted: | September 27, 2005 Key Record Dates |
Last Update Posted: | September 29, 2017 |
Last Verified: | September 2017 |
Keywords provided by The University of Texas Health Science Center at San Antonio:
Phenotype Growth Genotype Chromosome 18 |
Additional relevant MeSH terms:
Dwarfism, Pituitary Dwarfism Chromosome Aberrations Chromosome Disorders Bone Diseases, Developmental Bone Diseases Musculoskeletal Diseases Bone Diseases, Endocrine Hypopituitarism Pituitary Diseases Hypothalamic Diseases |
Brain Diseases Central Nervous System Diseases Nervous System Diseases Endocrine System Diseases Pathologic Processes Congenital Abnormalities Genetic Diseases, Inborn Hormones Hormones, Hormone Substitutes, and Hormone Antagonists Physiological Effects of Drugs |