Candidate gene analysis in human neural tube defects.

Candidate gene analysis in human neural tube defects. Research Abstract Details 

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Candidate gene analysis in human neural tube defects. Abstract Text:

Biochemical and developmental pathways, mouse models, and positional evidence have provided numerous candidate genes for the study of human neural tube defects. In a survey of 80 studies on 38 candidate genes, few found significant results in human populations through case-control or family-based association studies. While the folate pathway has been explored extensively, only the MTHFR 677C > T polymorphism was significant, and only in an Irish population. Developmental pathways such as the Wnt signaling pathway and Hox genes have also been explored without positive results. More than 90 mouse candidates have been identified through spontaneous and knockout mutations, but only the T locus (mouse Brachyury gene) showed association in an initial study that was not confirmed on follow-up. Positional candidates have been derived from cytogenetic evidence, but preliminary genomic screens have limited power due to small sample sizes. Future studies would increase their power to detect association by using more samples. In addition a clarification of the phenotype would be beneficial as many studies used different inclusion criteria. Incorporating several types of data could highlight better candidates, as would looking beyond the traditional sources for candidate genes. Recent studies of an energy metabolism gene (UCP2) and vitamin B metabolism (Transcoalbumin) have produced promising results. Utilizing other model organisms may also be beneficial, as in a recent study from a chick model of NTDs in NCAM1. New approaches combined with traditional methods and increased sample sizes will help prioritize human NTD candidate genes and clarify the complex etiology of this condition.

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Candidate gene analysis in human neural tube defects. Journal Published:

PUBLICATION TYPE: Review

Journal: American journal of medical genetics. Part C, Semi

VOLUME: 135C

Page Numbers: 9-23

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ISSN: 1552-4868

DAY: 15

MONTH: May

YEAR: 2005

Candidate gene analysis in human neural tube defects. Information

Number of References: 82

LANGUAGE: eng

NlmUniqueID: 101235745

Candidate gene analysis in human neural tube defects. Keywords Mesh Terms:

KEYWORDS: Transcription Factors

MESH TERMS: genetics

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Grant and Affiliation Information for Candidate gene analysis in human neural tube defects.

AFFILIATION: Duke University Program in Genetics and Genomics, USA.

Country: United States

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MEDLINETA: Am J Med Genet C Semin Med Gen

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