Association between CNTNAP2 polymorphisms and autism: A family-based study in the chinese han population and a meta-analysis combined with GWAS data of psychiatric genomics consortium / T. ZHANG in Autism Research, 12-4 (April 2019)  

Public ISBD [article]  inAutism Research > 12-4 (April 2019) . - p.553-561 Titre : Association between CNTNAP2 polymorphisms and autism: A family-based study in the chinese han population and a meta-analysis combined with GWAS data of psychiatric genomics consortium Type de document : Texte imprimé et/ou numérique Auteurs : T. ZHANG, Auteur ; J. ZHANG, Auteur ; Z. WANG, Auteur ; M. JIA, Auteur ; T. LU, Auteur ; H. WANG, Auteur ; W. YUE, Auteur ; D. ZHANG, Auteur ; J. LI, Auteur ; L. WANG, Auteur Article en page(s) : p.553-561 Langues : Anglais (eng) Mots-clés : Cntnap2  Pgc  autism  meta-analysis  polymorphism Index. décimale : PER Périodiques Résumé : Autism is a childhood neuropsychiatric disorder with evidence of a strong genetic component in the complex etiologies. Contactin-associated protein-like 2 (CNTNAP2), a member of the neurexin superfamily, plays an essential role in neural development. CNTNAP2 was considered as one of the most susceptible genes for autism spectrum disorder (ASD). Some studies indicated the association of CNTNAP2 with ASD, while others reported no association. Given the inconsistent results of the previous studies, we performed a family-based association study between 9 single-nucleotide polymorphisms (SNPs) of CNTNAP2 and autism in 640 autistic trios in the Chinese Han population. Then, an updated meta-analysis, combined with the data from Psychiatric Genomics Consortium (iPSYCH-PGC ASD, 2017) and available association studies, was conducted. No SNPs were significantly associated with autism in the Chinese Han population. In the meta-analysis, the two frequently reported SNPs (rs2710102 and rs7794745) showed no significant association with ASD. Therefore, CNTNAP2 polymorphisms might not be associated with autism. Autism Research 2019, 12: 553-561. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: In present family-based association study, no single-nucleotide polymorphisms (SNPs) were significantly associated with autism in the Chinese Han population. In the updated meta-analysis, the association between the two frequently reported SNPs (rs2710102 and rs7794745) in CNTNAP2 and the risk of ASD was explored. However, the results showed no significant association. Therefore, our study suggested that CNTNAP2 polymorphisms might not be associated with autism. En ligne : https://dx.doi.org/10.1002/aur.2078 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=388 [article] Association between CNTNAP2 polymorphisms and autism: A family-based study in the chinese han population and a meta-analysis combined with GWAS data of psychiatric genomics consortium [Texte imprimé et/ou numérique] / T. ZHANG, Auteur ; J. ZHANG, Auteur ; Z. WANG, Auteur ; M. JIA, Auteur ; T. LU, Auteur ; H. WANG, Auteur ; W. YUE, Auteur ; D. ZHANG, Auteur ; J. LI, Auteur ; L. WANG, Auteur . - p.553-561. Langues : Anglais (eng) in Autism Research > 12-4 (April 2019) . - p.553-561 Mots-clés : Cntnap2  Pgc  autism  meta-analysis  polymorphism Index. décimale : PER Périodiques Résumé : Autism is a childhood neuropsychiatric disorder with evidence of a strong genetic component in the complex etiologies. Contactin-associated protein-like 2 (CNTNAP2), a member of the neurexin superfamily, plays an essential role in neural development. CNTNAP2 was considered as one of the most susceptible genes for autism spectrum disorder (ASD). Some studies indicated the association of CNTNAP2 with ASD, while others reported no association. Given the inconsistent results of the previous studies, we performed a family-based association study between 9 single-nucleotide polymorphisms (SNPs) of CNTNAP2 and autism in 640 autistic trios in the Chinese Han population. Then, an updated meta-analysis, combined with the data from Psychiatric Genomics Consortium (iPSYCH-PGC ASD, 2017) and available association studies, was conducted. No SNPs were significantly associated with autism in the Chinese Han population. In the meta-analysis, the two frequently reported SNPs (rs2710102 and rs7794745) showed no significant association with ASD. Therefore, CNTNAP2 polymorphisms might not be associated with autism. Autism Research 2019, 12: 553-561. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: In present family-based association study, no single-nucleotide polymorphisms (SNPs) were significantly associated with autism in the Chinese Han population. In the updated meta-analysis, the association between the two frequently reported SNPs (rs2710102 and rs7794745) in CNTNAP2 and the risk of ASD was explored. However, the results showed no significant association. Therefore, our study suggested that CNTNAP2 polymorphisms might not be associated with autism. En ligne : https://dx.doi.org/10.1002/aur.2078 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=388

Cross-Disorder Analysis of De Novo Mutations in Neuropsychiatric Disorders / K. LI in Journal of Autism and Developmental Disorders, 52-3 (March 2022)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 52-3 (March 2022) . - p.1299-1313 Titre : Cross-Disorder Analysis of De Novo Mutations in Neuropsychiatric Disorders Type de document : Texte imprimé et/ou numérique Auteurs : K. LI, Auteur ; Z. FANG, Auteur ; G. ZHAO, Auteur ; B. LI, Auteur ; C. CHEN, Auteur ; L. XIA, Auteur ; L. WANG, Auteur ; T. LUO, Auteur ; X. WANG, Auteur ; Z. WANG, Auteur ; Y. ZHANG, Auteur ; Y. JIANG, Auteur ; Q. PAN, Auteur ; Z. HU, Auteur ; H. GUO, Auteur ; B. TANG, Auteur ; C. LIU, Auteur ; Z. SUN, Auteur ; K. XIA, Auteur ; J. LI, Auteur Article en page(s) : p.1299-1313 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/genetics  Genetic Predisposition to Disease  Humans  Intellectual Disability/genetics  Mutation  Phenotype  Schizophrenia  Candidate gene  De novo mutation  Expression pattern  Functional network  Neuropsychiatric disorder Index. décimale : PER Périodiques Résumé : The clinical similarity among different neuropsychiatric disorders (NPDs) suggested a shared genetic basis. We catalogued 23,109 coding de novo mutations (DNMs) from 6511 patients with autism spectrum disorder (ASD), 4,293 undiagnosed developmental disorder (UDD), 933 epileptic encephalopathy (EE), 1022 intellectual disability (ID), 1094 schizophrenia (SCZ), and 3391 controls. We evaluated that putative functional DNMs contribute to 38.11%, 34.40%, 33.31%, 10.98% and 6.91% of patients with ID, EE, UDD, ASD and SCZ, respectively. Consistent with phenotype similarity and heterogeneity in different NPDs, they show different degree of genetic association. Cross-disorder analysis of DNMs prioritized 321 candidate genes (FDR? En ligne : http://dx.doi.org/10.1007/s10803-021-05031-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455 [article] Cross-Disorder Analysis of De Novo Mutations in Neuropsychiatric Disorders [Texte imprimé et/ou numérique] / K. LI, Auteur ; Z. FANG, Auteur ; G. ZHAO, Auteur ; B. LI, Auteur ; C. CHEN, Auteur ; L. XIA, Auteur ; L. WANG, Auteur ; T. LUO, Auteur ; X. WANG, Auteur ; Z. WANG, Auteur ; Y. ZHANG, Auteur ; Y. JIANG, Auteur ; Q. PAN, Auteur ; Z. HU, Auteur ; H. GUO, Auteur ; B. TANG, Auteur ; C. LIU, Auteur ; Z. SUN, Auteur ; K. XIA, Auteur ; J. LI, Auteur . - p.1299-1313. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 52-3 (March 2022) . - p.1299-1313 Mots-clés : Autism Spectrum Disorder/genetics  Genetic Predisposition to Disease  Humans  Intellectual Disability/genetics  Mutation  Phenotype  Schizophrenia  Candidate gene  De novo mutation  Expression pattern  Functional network  Neuropsychiatric disorder Index. décimale : PER Périodiques Résumé : The clinical similarity among different neuropsychiatric disorders (NPDs) suggested a shared genetic basis. We catalogued 23,109 coding de novo mutations (DNMs) from 6511 patients with autism spectrum disorder (ASD), 4,293 undiagnosed developmental disorder (UDD), 933 epileptic encephalopathy (EE), 1022 intellectual disability (ID), 1094 schizophrenia (SCZ), and 3391 controls. We evaluated that putative functional DNMs contribute to 38.11%, 34.40%, 33.31%, 10.98% and 6.91% of patients with ID, EE, UDD, ASD and SCZ, respectively. Consistent with phenotype similarity and heterogeneity in different NPDs, they show different degree of genetic association. Cross-disorder analysis of DNMs prioritized 321 candidate genes (FDR? En ligne : http://dx.doi.org/10.1007/s10803-021-05031-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455

Depicting the composition of gut microbiota in children with tic disorders: an exploratory study / W. XI in Journal of Child Psychology and Psychiatry, 62-10 (October 2021)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 62-10 (October 2021) . - p.1246-1254 Titre : Depicting the composition of gut microbiota in children with tic disorders: an exploratory study Type de document : Texte imprimé et/ou numérique Auteurs : W. XI, Auteur ; X. GAO, Auteur ; H. ZHAO, Auteur ; X. LUO, Auteur ; J. LI, Auteur ; X. TAN, Auteur ; L. WANG, Auteur ; J. B. ZHAO, Auteur ; J. WANG, Auteur ; G. YANG, Auteur ; L. Y. LIU, Auteur ; Y. Y. WANG, Auteur ; L. PENG, Auteur ; L. P. ZOU, Auteur ; Y. YANG, Auteur Article en page(s) : p.1246-1254 Langues : Anglais (eng) Mots-clés : Bacteroides  Child  Gastrointestinal Microbiome  Humans  Prevotella  Ruminococcus  Streptococcus  Tic Disorders  dopamine receptor antagonists  gut microbiota  metabolic pathways  metagenomics Index. décimale : PER Périodiques Résumé : BACKGROUND: Symptom improvement in children with tic disorder (TD) following fecal microbiota transplantation led us to investigate the gut microbiota in TD. This exploratory study aims to depict the gut microbial profile in patients with TD and explore the impact of dopamine receptor antagonist (DRA) drugs on the composition and metabolic function of the gut microbiota. METHODS: The gut microbiota were profiled in fecal samples of 49 children with TD and 50 matched healthy controls (HC) using shotgun metagenomic sequencing. A random forest (RF) model was constructed using the gut bacterial species to distinguish TD from HC. Associations between clinical metadata and microbial abundance or function were analyzed using MaAsLin2 and Spearman correlation. RESULTS: The gut microbiota in children with TD was featured by higher abundances of Bacteroides plebeius and Ruminococcus lactaris (a potential pro-inflammatory taxon) and lower abundances of Prevotella stercorea and Streptococcus lutetiensis compared to HC. The constructed RF model accurately distinguished TD from HC based on the gut microbiota profile, resulting in an AUC of 0.884. Significant correlations were observed between tic symptom severity and the abundances of multiple bacterial species and gut microbiota metabolic functions. Multivariate analysis identified an upregulation of 4-aminobutanoate (GABA) degradation in the gut microbiota associated with TD status. The gut microbiota of DRA-treated TD children showed a distinct gut microbiota compared to the treatment-naïve group, represented by an increase in some potential enteric pathogens such as Escherichia coli, a decline in several species including Akkermansia muciniphila, and alterations in various metabolic functions. CONCLUSIONS: Bacterial species promoting inflammatory responses and those modulating neurotransmitters such as GABA may be involved in the pathogenesis of TD. The use of DRA drugs is likely to induce overgrowth of some enteric pathogens and alter the gut microbiota metabolism. En ligne : http://dx.doi.org/10.1111/jcpp.13409 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 [article] Depicting the composition of gut microbiota in children with tic disorders: an exploratory study [Texte imprimé et/ou numérique] / W. XI, Auteur ; X. GAO, Auteur ; H. ZHAO, Auteur ; X. LUO, Auteur ; J. LI, Auteur ; X. TAN, Auteur ; L. WANG, Auteur ; J. B. ZHAO, Auteur ; J. WANG, Auteur ; G. YANG, Auteur ; L. Y. LIU, Auteur ; Y. Y. WANG, Auteur ; L. PENG, Auteur ; L. P. ZOU, Auteur ; Y. YANG, Auteur . - p.1246-1254. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 62-10 (October 2021) . - p.1246-1254 Mots-clés : Bacteroides  Child  Gastrointestinal Microbiome  Humans  Prevotella  Ruminococcus  Streptococcus  Tic Disorders  dopamine receptor antagonists  gut microbiota  metabolic pathways  metagenomics Index. décimale : PER Périodiques Résumé : BACKGROUND: Symptom improvement in children with tic disorder (TD) following fecal microbiota transplantation led us to investigate the gut microbiota in TD. This exploratory study aims to depict the gut microbial profile in patients with TD and explore the impact of dopamine receptor antagonist (DRA) drugs on the composition and metabolic function of the gut microbiota. METHODS: The gut microbiota were profiled in fecal samples of 49 children with TD and 50 matched healthy controls (HC) using shotgun metagenomic sequencing. A random forest (RF) model was constructed using the gut bacterial species to distinguish TD from HC. Associations between clinical metadata and microbial abundance or function were analyzed using MaAsLin2 and Spearman correlation. RESULTS: The gut microbiota in children with TD was featured by higher abundances of Bacteroides plebeius and Ruminococcus lactaris (a potential pro-inflammatory taxon) and lower abundances of Prevotella stercorea and Streptococcus lutetiensis compared to HC. The constructed RF model accurately distinguished TD from HC based on the gut microbiota profile, resulting in an AUC of 0.884. Significant correlations were observed between tic symptom severity and the abundances of multiple bacterial species and gut microbiota metabolic functions. Multivariate analysis identified an upregulation of 4-aminobutanoate (GABA) degradation in the gut microbiota associated with TD status. The gut microbiota of DRA-treated TD children showed a distinct gut microbiota compared to the treatment-naïve group, represented by an increase in some potential enteric pathogens such as Escherichia coli, a decline in several species including Akkermansia muciniphila, and alterations in various metabolic functions. CONCLUSIONS: Bacterial species promoting inflammatory responses and those modulating neurotransmitters such as GABA may be involved in the pathogenesis of TD. The use of DRA drugs is likely to induce overgrowth of some enteric pathogens and alter the gut microbiota metabolism. En ligne : http://dx.doi.org/10.1111/jcpp.13409 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456

Development of neurodevelopmental disorders: a regulatory mechanism involving bromodomain-containing proteins / J. LI in Journal of Neurodevelopmental Disorders, 5-1 (December 2013)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 5-1 (December 2013) . - p.4 Titre : Development of neurodevelopmental disorders: a regulatory mechanism involving bromodomain-containing proteins Type de document : Texte imprimé et/ou numérique Auteurs : J. LI, Auteur ; G. ZHAO, Auteur ; X. GAO, Auteur Article en page(s) : p.4 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Neurodevelopmental disorders are classified as diseases that cause abnormal functions of the brain or central nervous system. Children with neurodevelopmental disorders show impaired language and speech abilities, learning and memory damage, and poor motor skills. However, we still know very little about the molecular etiology of these disorders. Recent evidence implicates the bromodomain-containing proteins (BCPs) in the initiation and development of neurodevelopmental disorders. BCPs have a particular domain, the bromodomain (Brd), which was originally identified as specifically binding acetyl-lysine residues at the N-terminus of histone proteins in vitro and in vivo. Other domains of BCPs are responsible for binding partner proteins to form regulatory complexes. Once these complexes are assembled, BCPs alter chromosomal states and regulate gene expression. Some BCP complexes bind nucleosomes, are involved in basal transcription regulation, and influence the transcription of many genes. However, most BCPs are involved in targeting. For example, some BCPs function as a recruitment platform or scaffold through their Brds-binding targeting sites. Others are recruited to form a complex to bind the targeting sites of their partners. The regulation mediated by these proteins is especially critical during normal and abnormal development. Mutant BCPs or dysfunctional BCP-containing complexes are implicated in the initiation and development of neurodevelopmental disorders. However, the pathogenic molecular mechanisms are not fully understood. In this review, we focus on the roles of regulatory BCPs associated with neurodevelopmental disorders, including mental retardation, Fragile X syndrome (FRX), Williams syndrome (WS), Rett syndrome and Rubinstein-Taybi syndrome (RTS). A better understanding of the molecular pathogenesis, based upon the roles of BCPs, will lead to screening of targets for the treatment of neurodevelopmental disorders. En ligne : http://dx.doi.org/10.1186/1866-1955-5-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=345 [article] Development of neurodevelopmental disorders: a regulatory mechanism involving bromodomain-containing proteins [Texte imprimé et/ou numérique] / J. LI, Auteur ; G. ZHAO, Auteur ; X. GAO, Auteur . - p.4. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 5-1 (December 2013) . - p.4 Index. décimale : PER Périodiques Résumé : Neurodevelopmental disorders are classified as diseases that cause abnormal functions of the brain or central nervous system. Children with neurodevelopmental disorders show impaired language and speech abilities, learning and memory damage, and poor motor skills. However, we still know very little about the molecular etiology of these disorders. Recent evidence implicates the bromodomain-containing proteins (BCPs) in the initiation and development of neurodevelopmental disorders. BCPs have a particular domain, the bromodomain (Brd), which was originally identified as specifically binding acetyl-lysine residues at the N-terminus of histone proteins in vitro and in vivo. Other domains of BCPs are responsible for binding partner proteins to form regulatory complexes. Once these complexes are assembled, BCPs alter chromosomal states and regulate gene expression. Some BCP complexes bind nucleosomes, are involved in basal transcription regulation, and influence the transcription of many genes. However, most BCPs are involved in targeting. For example, some BCPs function as a recruitment platform or scaffold through their Brds-binding targeting sites. Others are recruited to form a complex to bind the targeting sites of their partners. The regulation mediated by these proteins is especially critical during normal and abnormal development. Mutant BCPs or dysfunctional BCP-containing complexes are implicated in the initiation and development of neurodevelopmental disorders. However, the pathogenic molecular mechanisms are not fully understood. In this review, we focus on the roles of regulatory BCPs associated with neurodevelopmental disorders, including mental retardation, Fragile X syndrome (FRX), Williams syndrome (WS), Rett syndrome and Rubinstein-Taybi syndrome (RTS). A better understanding of the molecular pathogenesis, based upon the roles of BCPs, will lead to screening of targets for the treatment of neurodevelopmental disorders. En ligne : http://dx.doi.org/10.1186/1866-1955-5-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=345

Identification of a PTEN mutation with reduced protein stability, phosphatase activity, and nuclear localization in Hong Kong patients with autistic features, neurodevelopmental delays, and macrocephaly / C. W. WONG in Autism Research, 11-8 (August 2018)  

Public ISBD [article]  inAutism Research > 11-8 (August 2018) . - p.1098-1109 Titre : Identification of a PTEN mutation with reduced protein stability, phosphatase activity, and nuclear localization in Hong Kong patients with autistic features, neurodevelopmental delays, and macrocephaly Type de document : Texte imprimé et/ou numérique Auteurs : C. W. WONG, Auteur ; P. M. Y. OR, Auteur ; Y. WANG, Auteur ; L. LI, Auteur ; J. LI, Auteur ; M. YAN, Auteur ; Y. CAO, Auteur ; H. M. LUK, Auteur ; T. M. F. TONG, Auteur ; N. R. LESLIE, Auteur ; I. F. LO, Auteur ; K. W. CHOY, Auteur ; A. M. L. CHAN, Auteur Article en page(s) : p.1098-1109 Langues : Anglais (eng) Mots-clés : Hong Kong  Pten  PTEN hamartoma tumor syndrome  autism spectrum disorders  macrocephaly Index. décimale : PER Périodiques Résumé : PTEN is a tumor suppressor gene inactivated in over 30% of human cancers. It encodes a lipid phosphatase that serves as a gatekeeper of the phosphoinositide 3-kinase signaling pathway. Germline mutation frequently occurs in this gene in patients diagnosed with PTEN Hamartoma Tumor Syndrome (PHTS). PHTS individuals are characterized by macrocephaly, benign growth of multiple tissues and increased tumor risk. In addition, autistic phenotypes are found in 10-20% of individuals carrying the germline PTEN mutation with macrocephaly. In this report, 13 suspected PHTS patients were screened for mutation in the PTEN gene. A missense variant (c. 302T > C) substituting the isoleucine at codon 101 to a threonine, a single nucleotide insertion (c. 327-328insC) causing a frame shift mutation and termination at codon 109, and a nonsense variant (c. 1003C > T) truncated the protein at codon 335 were identified. The I101T mutation significantly reduced PTEN protein expression levels by 2.5- to 4.0-fold. Mechanistically, I101T reduced the protein half-life of PTEN possibly due to enhanced polyubiquitination at Lysine 13. However, the I101T mutant retained almost 30% of the lipid phosphatase activity of the wild-type protein. Finally, the I101T mutant has reduced phosphorylation at a PTEN auto-dephosphorylation site at Threonine 366 and a lowered ratio of nuclear to cytosolic protein level. These partial losses of multiple PTEN biochemical functions may contribute to the tissue overgrowth and autistic features of this PHTS patient. Autism Res 2018, 11: 1098-1109. (c) 2018 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: The genetics of autism spectrum disorders is highly complex with individual risk influenced by both genetic and environmental factors. Mutation in the human PTEN gene confers a high risk of developing autistic behavior. This report revealed that PTEN mutations occurred in 23% of a selected group of Hong Kong patients harboring autistic features with gross overgrowth symptoms. Detailed characterization of a PTEN mutation revealed reduced protein stability as one of the underlying mechanisms responsible for reduced PTEN activity. En ligne : http://dx.doi.org/10.1002/aur.1950 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369 [article] Identification of a PTEN mutation with reduced protein stability, phosphatase activity, and nuclear localization in Hong Kong patients with autistic features, neurodevelopmental delays, and macrocephaly [Texte imprimé et/ou numérique] / C. W. WONG, Auteur ; P. M. Y. OR, Auteur ; Y. WANG, Auteur ; L. LI, Auteur ; J. LI, Auteur ; M. YAN, Auteur ; Y. CAO, Auteur ; H. M. LUK, Auteur ; T. M. F. TONG, Auteur ; N. R. LESLIE, Auteur ; I. F. LO, Auteur ; K. W. CHOY, Auteur ; A. M. L. CHAN, Auteur . - p.1098-1109. Langues : Anglais (eng) in Autism Research > 11-8 (August 2018) . - p.1098-1109 Mots-clés : Hong Kong  Pten  PTEN hamartoma tumor syndrome  autism spectrum disorders  macrocephaly Index. décimale : PER Périodiques Résumé : PTEN is a tumor suppressor gene inactivated in over 30% of human cancers. It encodes a lipid phosphatase that serves as a gatekeeper of the phosphoinositide 3-kinase signaling pathway. Germline mutation frequently occurs in this gene in patients diagnosed with PTEN Hamartoma Tumor Syndrome (PHTS). PHTS individuals are characterized by macrocephaly, benign growth of multiple tissues and increased tumor risk. In addition, autistic phenotypes are found in 10-20% of individuals carrying the germline PTEN mutation with macrocephaly. In this report, 13 suspected PHTS patients were screened for mutation in the PTEN gene. A missense variant (c. 302T > C) substituting the isoleucine at codon 101 to a threonine, a single nucleotide insertion (c. 327-328insC) causing a frame shift mutation and termination at codon 109, and a nonsense variant (c. 1003C > T) truncated the protein at codon 335 were identified. The I101T mutation significantly reduced PTEN protein expression levels by 2.5- to 4.0-fold. Mechanistically, I101T reduced the protein half-life of PTEN possibly due to enhanced polyubiquitination at Lysine 13. However, the I101T mutant retained almost 30% of the lipid phosphatase activity of the wild-type protein. Finally, the I101T mutant has reduced phosphorylation at a PTEN auto-dephosphorylation site at Threonine 366 and a lowered ratio of nuclear to cytosolic protein level. These partial losses of multiple PTEN biochemical functions may contribute to the tissue overgrowth and autistic features of this PHTS patient. Autism Res 2018, 11: 1098-1109. (c) 2018 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: The genetics of autism spectrum disorders is highly complex with individual risk influenced by both genetic and environmental factors. Mutation in the human PTEN gene confers a high risk of developing autistic behavior. This report revealed that PTEN mutations occurred in 23% of a selected group of Hong Kong patients harboring autistic features with gross overgrowth symptoms. Detailed characterization of a PTEN mutation revealed reduced protein stability as one of the underlying mechanisms responsible for reduced PTEN activity. En ligne : http://dx.doi.org/10.1002/aur.1950 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369

New approaches to investigating social gestures in autism spectrum disorder / K. T. KISHIDA in Journal of Neurodevelopmental Disorders, 4-1 (December 2012)  

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Refractive Status and Amblyopia Risk Factors in Chinese Children with Autism Spectrum Disorder / J. WANG in Journal of Autism and Developmental Disorders, 48-5 (May 2018)  

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