- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00106652
Childhood Autism Risks From Genetics and the Environment (The CHARGE Study)
Environmental Factors in the Etiology of Autism
Studieoversigt
Status
Betingelser
Detaljeret beskrivelse
The causes and contributing factors for autism are poorly understood. Evidence suggests that incidence is increasing, but diagnostic changes and improvements may be playing a role. Both genetic and environmental factors appear to play a role. Autopsy studies demonstrate structural changes in the brain and clinical investigations reveal neurophysiologic differences in information processing in autistic versus normal children. Members of our team recently demonstrated altered levels of certain neuropeptides at birth in children who later developed autism.
This case-control study is the first large-scale epidemiologic investigation of underlying causes for autism and triggers of regression. This study capitalizes on the strengths of the case-control design, which is well suited to examine a broad array of factors for rare conditions that are thought to be multifactorial. Comparisons will be made with both general population controls and mentally retarded children.
The aims are to assess the influence of exogenous exposures, the role of susceptibility factors, and the interplay between these two in the etiology of autism and its phenotypic variation. Chemicals with known or suspected neurodevelopmental toxicity, such as PCB's, certain pesticides, and metals, are being investigated. This study pursues several hypotheses that have recently gained attention, including the combined measles, mumps, rubella vaccine and mercury present in vaccines given during infancy and early childhood. Additionally, biochemical susceptibility is examined through characterization of metabolic, immunologic, and neuronal gene expression profiles and genetic polymorphisms.
Undersøgelsestype
Tilmelding (Forventet)
Kontakter og lokationer
Studiesteder
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California
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Davis, California, Forenede Stater, 95616
- University of California
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Children between 2 and 5 years old
- Born in California
- Parents must speak either English or Spanish
- Children must be living with at least one biologic parent
Exclusion Criteria:
- Children not meeting eligibility criteria listed above
- Children not residing in selected geographical areas (please contact for more information about specific study locations)
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Tidsperspektiver: Andet
Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: Isaac N. Pessah, Ph.D., University of California, Davis
- Studieleder: Irva Hertz-Picciotto, Ph.D., University of California, Davis
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 11269-CP-001
- 200210574-4
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Kliniske forsøg med Udviklingshæmning
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Children's Hospital Medical Center, CincinnatiEunice Kennedy Shriver National Institute of Child Health and Human Development...AfsluttetBørns udviklingsforstyrrelser, gennemgåendeForenede Stater