- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00001639
Evaluation of Patients With Unresolved Chromosome Abnormalities
Evaluation of Patients With Unresolved Chromosome Aberrations
The purpose of this research is to study a new way to test for chromosome abnormalities. Chromosomes are strands of DNA (the genetic material in the cell nucleus) that are made up of genes-the units of heredity. Chromosome abnormalities are usually investigated by staining the chromosomes with a dye (Giemsa stain) and examining them under a microscope. This method can detect many duplications and deletions of pieces of chromosomes and is very accurate in diagnosing certain abnormalities. It is not useful, however, for identifying very small abnormalities. This study will evaluate the accuracy of a test method using 24 different dyes for finding small chromosome abnormalities.
Children and adults with various chromosome abnormalities may be eligible for this study, including, for example, people with developmental delay or mental retardation, abnormal growth features or growth retardation, and certain behavioral disorders. Participants will be evaluated in the clinic over a 1- to 3-day period, depending on their symptoms. All participants will be examined by a genetics specialist and will have a physical examination and possibly X-rays, computerized tomography (CT) scans, magnetic resonance imaging (MRI), ultrasound studies and medical photography. Blood will be drawn for chromosome testing-about 3 tablespoons from adults and 1 to 3 teaspoons from children.
When the test results are available, participants will return to the clinic for follow-up evaluation and review of the test findings. The genetic and medical evaluations, along with their implications, will be discussed.
Descripción general del estudio
Estado
Descripción detallada
Tipo de estudio
Inscripción
Contactos y Ubicaciones
Ubicaciones de estudio
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Maryland
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Bethesda, Maryland, Estados Unidos, 20892
- National Human Genome Research Institute (NHGRI)
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Niño
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Physical anomalies or developmental anomalies.
Karyotype showing derivative chromosome abnormality that is not fully characterized.
No abnormal parental karyotype.
No prenatal specimens.
Probands of all ages, genders, and ethnic origin are eligible.
The proband must have a non-mosaic abnormal G-banded chromosome analysis of good quality that shows one or more derivative chromosomes whose foreign component cannot be determined by standard G-banding techniques.
The parents should also have G-banded chromosome analysis prior to eligibility for consent 2. If this has not been done by the referring physician, it may be done as part of the protocol.
The proband with the abnormal karyotype should have one or more of the following features: dysmorphic features; developmental delay or mental retardation; growth retardation, microephaly, short stature or failure to thrive; behavioral disorder
Biological parents must be willing to supply a blood specimen. If they have any of the features listed above, they must attend the clinic if the proband is to be eligible.
The proband must be evaluated by the NCHGR clinical genetics service by the PI, a co-investigator, or his associates.
Mothers will be queried about potential non-paternity. If non-paternity is possible, the family will need to undergo clinical paternity evaluation before they are enrolled in the study.
Plan de estudios
¿Cómo está diseñado el estudio?
Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria
Finalización del estudio
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Desordenes mentales
- Enfermedades del Sistema Nervioso
- Manifestaciones neurológicas
- Manifestaciones neuroconductuales
- Enfermedades musculoesqueléticas
- Trastornos del neurodesarrollo
- Anomalías craneofaciales
- Anomalías musculoesqueléticas
- Malformaciones del Desarrollo Cortical, Grupo I
- Malformaciones del desarrollo cortical
- Malformaciones del Sistema Nervioso
- Anomalías congénitas
- Microcefalia
- Discapacidad intelectual
- Fracaso para prosperar
Otros números de identificación del estudio
- 970045
- 97-HG-0045
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
producto fabricado y exportado desde los EE. UU.
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