Document Type

Article

Peer Reviewed

1

Publication Date

1-1-2009

Journal, Book or Conference Title

Human heredity

NLM Title Abbreviation

Hum Hered

PubMed ID

19521098

DOI

10.1159/000224636

Abstract

OBJECTIVES: Non-syndromic orofacial clefts, i.e. cleft lip (CL) and cleft palate (CP), are among the most common birth defects. The goal of this study was to identify genomic regions and genes for CL with or without CP (CL/P). METHODS: We performed linkage analyses of a 10 cM genome scan in 820 multiplex CL/P families (6,565 individuals). Significant linkage results were followed by association analyses of 1,476 SNPs in candidate genes and regions, utilizing a weighted false discovery rate (wFDR) approach to control for multiple testing and incorporate the genome scan results. RESULTS: Significant (multipoint HLOD >or=3.2) or genome-wide-significant (HLOD >or=4.02) linkage results were found for regions 1q32, 2p13, 3q27-28, 9q21, 12p11, 14q21-24 and 16q24. SNPs in IRF6 (1q32) and in or near FOXE1 (9q21) reached formal genome-wide wFDR-adjusted significance. Further, results were phenotype dependent in that the IRF6 region results were most significant for families in which affected individuals have CL alone, and the FOXE1 region results were most significant in families in which some or all of the affected individuals have CL with CP. CONCLUSIONS: These results highlight the importance of careful phenotypic delineation in large samples of families for genetic analyses of complex, heterogeneous traits such as CL/P.

Keywords

Chromosome Mapping, Chromosomes, Human/genetics, Cleft Lip/genetics, Cleft Palate/genetics, Genetic Linkage, Genetic Predisposition to Disease, Genome, Human, Genome-Wide Association Study, Humans, Phenotype, Polymorphism, Single Nucleotide

Published Article/Book Citation

The definitive version was published in Human heredity, 68:3 (2009) pp.151-170. DOI:10.1159/000224636.

Rights

Author Posting. Copyright © S. Karger AG, Basel, 2009. This article is posted here by permission of the publisher for personal use, not for redistribution.

 

URL

http://ir.uiowa.edu/nursing_pubs/749