Evidence for association of DNA sequence variants in the phosphatidylinositol-4-phosphate 5-kinase IIalpha gene (PIP5K2A) with schizophrenia.
Mol Psychiatry
; 11(9): 837-46, 2006 Sep.
Article
in En
| MEDLINE
| ID: mdl-16801950
ABSTRACT
Linkage studies in schizophrenia have identified a candidate region on chromosome 10p14-11 as reported for several independent samples. We investigated association of DNA sequence variants in a plausible candidate gene located in this region, the gene for phosphatidylinositol-4-phosphate 5-kinase IIalpha (PIP5K2A), in a sample of 65 sib-pair families for which linkage had been reported. Evidence for association was obtained for 15 polymorphisms spanning 73.6 kb in the genomic region of the gene between intron 4 and the 3' untranslated region, a region with high degree of linkage disequilibrium. Single nucleotide polymorphism (SNP) rs10828317 located in exon 7 and causing a non-synonymous amino-acid exchange (asparagine/serine) produced a P-value of 0.001 (experiment-wide significance level 0.00275) for over-transmission of the major allele coding for serine, analysed by transmission disequilibrium test using FAMHAP. Association of this SNP with schizophrenia has been also described in a sample of 273 Dutch schizophrenic patients and 580 controls (P=0.0004). PIP5K2A is involved in the biosynthesis of phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2), one of the key metabolic crossroads in phosphoinositide signalling. PI(4,5)P2 plays a role in membrane transduction of neurotransmitter signals as well as in intracellular signalling, pathways that may be impaired in schizophrenia.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Schizophrenia
/
Genetic Variation
/
DNA
/
Phosphotransferases (Alcohol Group Acceptor)
Type of study:
Clinical_trials
/
Risk_factors_studies
Limits:
Humans
Language:
En
Journal:
Mol Psychiatry
Journal subject:
BIOLOGIA MOLECULAR
/
PSIQUIATRIA
Year:
2006
Document type:
Article
Affiliation country: