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Prandini P.,University of Verona | Pasquali A.,University of Verona | Malerba G.,University of Verona | Marostica A.,University of Verona | And 59 more authors.
Psychiatric Genetics | Year: 2012

Objective The objective of this study was to replicate an association study on a newly collected Italian autism spectrum disorder (ASD) cohort by studying the genetic markers associated with ASDs from recent genome-wide and candidate gene association studies. Methods We have genotyped 746 individuals from 227 families of the Italian Autism Network using allelic discrimination TaqMan assays for seven common single-nucleotide polymorphisms: rs2292813 (SLC25A12 gene), rs35678 (ATP2B2 gene), rs4307059 (between CDH9 and CDH10 genes), rs10513025 (between SEMA5A and TAS2R1 genes), rs6872664 (PITX1 gene), rs1861972 (EN2 gene), and rs4141463 (MACROD2 gene). A family-based association study was conducted. Results A significant association was found for two of seven markers: rs4307059 T allele (odds ratio: 1.758, SE = 0.236; P-value = 0.017) and rs35678 TC genotype (odds ratio: 0.528, SE = 0.199; P-value = 0.0013). Conclusion A preferential allele transmission of two markers located at loci previously associated with social and verbal communication skill has been confirmed in patients of a new ASD family sample. Psychiatr Genet 00:000-000. © 2012 Wolters Kluwer Health | Lippincott Williams & Wilkins. Source


Prandini P.,University of Verona | Zusi C.,University of Verona | Malerba G.,University of Verona | ITAN,A+ Network | And 56 more authors.
Molecular and Cellular Probes | Year: 2014

Several lines of evidence suggest that RBFOX1 is a key regulator of transcriptional and splicing programs in neural cells during development, and that it is expressed in a neuronal module enriched for known autism susceptibility genes. We have investigated its expression by semiquantitative RT-PCR in accessible nonbrain resources in eighteen autism spectrum disorder sib-pairs belonging to the Italian Autism Network cohort. RBFOX1 gene expression was detected in lymphoblastoid cell lines but not in lymphocytes. No significant differences between autism spectrum disorders and non-affected brothers were found. We were not able to replicate in lymphoblastoid cell lines the previously reported RBFOX1 gene downregulation in autism, even if a trend was observed. This might be due to less pronounced transcription level differences in RBFOX1 gene expression in lymphoblastoid cell lines than in brain samples. © 2014 Elsevier Ltd. Source

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