Abstract:
BACKGROUND:Limited success has been achieved through previous attention-deficit/hyperactivity disorder (ADHD) linkage scans, which were all designed to map genes underlying the dichotomous phenotype. The International Multi-centre ADHD Genetics (IMAGE) project performed a whole genome linkage scan specifically designed to map ADHD quantitative trait loci (QTL). METHODS:A set of 1094 single selected Caucasian ADHD nuclear families was genotyped on a highly accurate and informative single nucleotide polymorphism (SNP) panel. Two quantitative traits measuring the children's symptoms in home and school settings were collected and standardized according to a population sample of 8000 children to reflect the developmental nature and gender prevalence difference of ADHD. Univariate linkage test was performed on both traits and their mean score. RESULTS:A significant common linkage locus was found at chromosome 1p36 with a locus-specific heritability of 5.1% and a genomewide empirical p < .04. Setting-specific suggestive linkage signals were also found: logarithm of odds (LOD) = 2.2 at 9p23 for home trait and LOD = 2.6 at 11q21 for school trait. CONCLUSIONS:These results indicate that given large samples with proper phenotypic measures, searching for ADHD genes with a QTL strategy is an important alternative to using the clinical diagnosis. The fact that our linkage region 1p36 overlaps with the dyslexia QTL DYX8 further suggests it is potentially a pleiotropic locus for ADHD and dyslexia.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Zhou K,Asherson P,Sham P,Franke B,Anney RJ,Buitelaar J,Ebstein R,Gill M,Brookes K,Buschgens C,Campbell D,Chen W,Christiansen H,Fliers E,Gabriëls I,Johansson L,Marco R,Mulas F,Müller U,Mulligan A,Neale BM,Rijsdijdoi
10.1016/j.biopsych.2008.02.024subject
Has Abstractpub_date
2008-10-01 00:00:00pages
571-6issue
7eissn
0006-3223issn
1873-2402pii
S0006-3223(08)00337-5journal_volume
64pub_type
杂志文章abstract:BACKGROUND:Symptom provocation is used to study a wide variety of medical disorders. In contrast to other areas of medicine, the application of these procedures to the study of mental disease has generated significant scientific, political, and public debate. Purported differences include an overabundance of these proc...
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更新日期:2008-01-01 00:00:00
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doi:
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pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2007-11-15 00:00:00
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pub_type: 杂志文章
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更新日期:2014-09-01 00:00:00
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journal_title:Biological psychiatry
pub_type: 杂志文章
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更新日期:2003-03-15 00:00:00
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journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1978-02-01 00:00:00
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journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章
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更新日期:1998-09-15 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0006-3223(99)00134-1
更新日期:1999-11-01 00:00:00