Associations between Familial Rates of Psychiatric Disorders and De Novo Genetic Mutations in Autism / K. LUHRS in Autism Research and Treatment, 2017 (2017)  

Public ISBD [article]  inAutism Research and Treatment > 2017 (2017) Titre : Associations between Familial Rates of Psychiatric Disorders and De Novo Genetic Mutations in Autism Type de document : Texte imprimé et/ou numérique Auteurs : K. LUHRS, Auteur ; T. WARD, Auteur ; C. M. HUDAC, Auteur ; J. GERDTS, Auteur ; H. A. F. STESSMAN, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The purpose of this study was to examine the confluence of genetic and familial risk factors in children with Autism Spectrum Disorder (ASD) with distinct de novo genetic events. We hypothesized that gene-disrupting mutations would be associated with reduced rates of familial psychiatric disorders relative to structural mutations. Participants included families of children with ASD in four groups: de novo duplication copy number variations (DUP, n = 62), de novo deletion copy number variations (DEL, n = 74), de novo likely gene-disrupting mutations (LGDM, n = 267), and children without a known genetic etiology (NON, n = 2111). Familial rates of psychiatric disorders were calculated from semistructured interviews. Results indicated overall increased rates of psychiatric disorders in DUP families compared to DEL and LGDM families, specific to paternal psychiatric histories, and particularly evident for depressive disorders. Higher rates of depressive disorders in maternal psychiatric histories were observed overall compared to paternal histories and higher rates of anxiety disorders were observed in paternal histories for LGDM families compared to DUP families. These findings support the notion of an additive contribution of genetic etiology and familial factors are associated with ASD risk and highlight critical need for continued work targeting these relationships. En ligne : http://dx.doi.org/10.1155/2017/9371964 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=333 [article] Associations between Familial Rates of Psychiatric Disorders and De Novo Genetic Mutations in Autism [Texte imprimé et/ou numérique] / K. LUHRS, Auteur ; T. WARD, Auteur ; C. M. HUDAC, Auteur ; J. GERDTS, Auteur ; H. A. F. STESSMAN, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur. Langues : Anglais (eng) in Autism Research and Treatment > 2017 (2017) Index. décimale : PER Périodiques Résumé : The purpose of this study was to examine the confluence of genetic and familial risk factors in children with Autism Spectrum Disorder (ASD) with distinct de novo genetic events. We hypothesized that gene-disrupting mutations would be associated with reduced rates of familial psychiatric disorders relative to structural mutations. Participants included families of children with ASD in four groups: de novo duplication copy number variations (DUP, n = 62), de novo deletion copy number variations (DEL, n = 74), de novo likely gene-disrupting mutations (LGDM, n = 267), and children without a known genetic etiology (NON, n = 2111). Familial rates of psychiatric disorders were calculated from semistructured interviews. Results indicated overall increased rates of psychiatric disorders in DUP families compared to DEL and LGDM families, specific to paternal psychiatric histories, and particularly evident for depressive disorders. Higher rates of depressive disorders in maternal psychiatric histories were observed overall compared to paternal histories and higher rates of anxiety disorders were observed in paternal histories for LGDM families compared to DUP families. These findings support the notion of an additive contribution of genetic etiology and familial factors are associated with ASD risk and highlight critical need for continued work targeting these relationships. En ligne : http://dx.doi.org/10.1155/2017/9371964 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=333

Clinical phenotype of ASD-associated DYRK1A haploinsufficiency / R. K. EARL in Molecular Autism, 8 (2017)  

Public ISBD [article]  inMolecular Autism > 8 (2017) . - 54p. Titre : Clinical phenotype of ASD-associated DYRK1A haploinsufficiency Type de document : Texte imprimé et/ou numérique Auteurs : R. K. EARL, Auteur ; Tychele N. TURNER, Auteur ; H. C. MEFFORD, Auteur ; C. M. HUDAC, Auteur ; J. GERDTS, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur Article en page(s) : 54p. Langues : Anglais (eng) Mots-clés : Autism  Clinical phenotype  Dyrk1a  Disruptive mutation  Genetic syndrome  Genetically defined subtype Index. décimale : PER Périodiques Résumé : BACKGROUND: DYRK1A is a gene recurrently disrupted in 0.1-0.5% of the ASD population. A growing number of case reports with DYRK1A haploinsufficiency exhibit common phenotypic features including microcephaly, intellectual disability, speech delay, and facial dysmorphisms. METHODS: Phenotypic information from previously published DYRK1A cases (n = 51) and participants in an ongoing study at the University of Washington (UW, n = 10) were compiled. Frequencies of recurrent phenotypic features in this population were compared to features observed in a large sample with idiopathic ASD from the Simons Simplex Collection (n = 1981). UW DYRK1A cases were further characterized quantitatively and compared to a randomly subsampled set of idiopathic ASD cases matched on age and gender (n = 10) and to cases with an ASD-associated disruptive mutation to CHD8 (n = 12). Contribution of familial genetic background to clinical heterogeneity was assessed by comparing head circumference, IQ, and ASD-related symptoms of UW DYRK1A cases to their unaffected parents. RESULTS: DYRK1A haploinsufficiency results in a common phenotypic profile including intellectual disability, speech and motor difficulties, microcephaly, feeding difficulties, and vision abnormalities. Eighty-nine percent of DYRK1A cases ascertained for ASD presented with a constellation of five or more of these symptoms. When compared quantitatively, DYRK1A cases presented with significantly lower IQ and adaptive functioning compared to idiopathic cases and significantly smaller head size compared to both idiopathic and CHD8 cases. Phenotypic variability in parental head circumference, IQ, and ASD-related symptoms corresponded to observed variability in affected child phenotype. CONCLUSIONS: Results confirm a core clinical phenotype for DYRK1A disruptions, with a combination of features that is distinct from idiopathic ASD. Cases with DYRK1A mutations are also distinguishable from disruptive mutations to CHD8 by head size. Measurable, quantitative characterization of DYRK1A haploinsufficiency illuminates clinical variability, which may be, in part, due to familial genetic background. En ligne : http://dx.doi.org/10.1186/s13229-017-0173-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=330 [article] Clinical phenotype of ASD-associated DYRK1A haploinsufficiency [Texte imprimé et/ou numérique] / R. K. EARL, Auteur ; Tychele N. TURNER, Auteur ; H. C. MEFFORD, Auteur ; C. M. HUDAC, Auteur ; J. GERDTS, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur . - 54p. Langues : Anglais (eng) in Molecular Autism > 8 (2017) . - 54p. Mots-clés : Autism  Clinical phenotype  Dyrk1a  Disruptive mutation  Genetic syndrome  Genetically defined subtype Index. décimale : PER Périodiques Résumé : BACKGROUND: DYRK1A is a gene recurrently disrupted in 0.1-0.5% of the ASD population. A growing number of case reports with DYRK1A haploinsufficiency exhibit common phenotypic features including microcephaly, intellectual disability, speech delay, and facial dysmorphisms. METHODS: Phenotypic information from previously published DYRK1A cases (n = 51) and participants in an ongoing study at the University of Washington (UW, n = 10) were compiled. Frequencies of recurrent phenotypic features in this population were compared to features observed in a large sample with idiopathic ASD from the Simons Simplex Collection (n = 1981). UW DYRK1A cases were further characterized quantitatively and compared to a randomly subsampled set of idiopathic ASD cases matched on age and gender (n = 10) and to cases with an ASD-associated disruptive mutation to CHD8 (n = 12). Contribution of familial genetic background to clinical heterogeneity was assessed by comparing head circumference, IQ, and ASD-related symptoms of UW DYRK1A cases to their unaffected parents. RESULTS: DYRK1A haploinsufficiency results in a common phenotypic profile including intellectual disability, speech and motor difficulties, microcephaly, feeding difficulties, and vision abnormalities. Eighty-nine percent of DYRK1A cases ascertained for ASD presented with a constellation of five or more of these symptoms. When compared quantitatively, DYRK1A cases presented with significantly lower IQ and adaptive functioning compared to idiopathic cases and significantly smaller head size compared to both idiopathic and CHD8 cases. Phenotypic variability in parental head circumference, IQ, and ASD-related symptoms corresponded to observed variability in affected child phenotype. CONCLUSIONS: Results confirm a core clinical phenotype for DYRK1A disruptions, with a combination of features that is distinct from idiopathic ASD. Cases with DYRK1A mutations are also distinguishable from disruptive mutations to CHD8 by head size. Measurable, quantitative characterization of DYRK1A haploinsufficiency illuminates clinical variability, which may be, in part, due to familial genetic background. En ligne : http://dx.doi.org/10.1186/s13229-017-0173-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=330

Prospective investigation of FOXP1 syndrome / P. M. SIPER in Molecular Autism, 8 (2017)  

Public ISBD [article]  inMolecular Autism > 8 (2017) . - 57p. Titre : Prospective investigation of FOXP1 syndrome Type de document : Texte imprimé et/ou numérique Auteurs : P. M. SIPER, Auteur ; S. DE RUBEIS, Auteur ; M. D. P. TRELLES, Auteur ; A. DURKIN, Auteur ; D. DI MARINO, Auteur ; F. MURATET, Auteur ; Y. FRANK, Auteur ; R. LOZANO, Auteur ; E. E. EICHLER, Auteur ; M. KELLY, Auteur ; Jennifer BEIGHLEY, Auteur ; J. GERDTS, Auteur ; Arianne S. WALLACE, Auteur ; H. C. MEFFORD, Auteur ; Raphael BERNIER, Auteur ; A. KOLEVZON, Auteur ; Joseph D. BUXBAUM, Auteur Article en page(s) : 57p. Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : BACKGROUND: Haploinsufficiency of the forkhead-box protein P1 (FOXP1) gene leads to a neurodevelopmental disorder termed FOXP1 syndrome. Previous studies in individuals carrying FOXP1 mutations and deletions have described the presence of autism spectrum disorder (ASD) traits, intellectual disability, language impairment, and psychiatric features. The goal of the present study was to comprehensively characterize the genetic and clinical spectrum of FOXP1 syndrome. This is the first study to prospectively examine the genotype-phenotype relationship in multiple individuals with FOXP1 syndrome, using a battery of standardized clinical assessments. METHODS: Genetic and clinical data was obtained and analyzed from nine children and adolescents between the ages of 5-17 with mutations in FOXP1. Phenotypic characterization included gold standard ASD testing and norm-referenced measures of cognition, adaptive behavior, language, motor, and visual-motor integration skills. In addition, psychiatric, medical, neurological, and dysmorphology examinations were completed by a multidisciplinary team of clinicians. A comprehensive review of reported cases was also performed. All missense and in-frame mutations were mapped onto the three-dimensional structure of DNA-bound FOXP1. RESULTS: We have identified nine de novo mutations, including three frameshift, one nonsense, one mutation in an essential splice site resulting in frameshift and insertion of a premature stop codon, three missense, and one in-frame deletion. Reviewing prior literature, we found seven instances of recurrent mutations and another 34 private mutations. The majority of pathogenic missense and in-frame mutations, including all four missense mutations in our cohort, lie in the DNA-binding domain. Through structural analyses, we show that the mutations perturb amino acids necessary for binding to the DNA or interfere with the domain swapping that mediates FOXP1 dimerization. Individuals with FOXP1 syndrome presented with delays in early motor and language milestones, language impairment (expressive language > receptive language), ASD symptoms, visual-motor integration deficits, and complex psychiatric presentations characterized by anxiety, obsessive-compulsive traits, attention deficits, and externalizing symptoms. Medical features included non-specific structural brain abnormalities and dysmorphic features, endocrine and gastrointestinal problems, sleep disturbances, and sinopulmonary infections. CONCLUSIONS: This study identifies novel FOXP1 mutations associated with FOXP1 syndrome, identifies recurrent mutations, and demonstrates significant clustering of missense mutations in the DNA-binding domain. Clinical findings confirm the role FOXP1 plays in development across multiple domains of functioning. The genetic findings can be incorporated into clinical genetics practice to improve accurate genetic diagnosis of FOXP1 syndrome and the clinical findings can inform monitoring and treatment of individuals with FOXP1 syndrome. En ligne : http://dx.doi.org/10.1186/s13229-017-0172-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331 [article] Prospective investigation of FOXP1 syndrome [Texte imprimé et/ou numérique] / P. M. SIPER, Auteur ; S. DE RUBEIS, Auteur ; M. D. P. TRELLES, Auteur ; A. DURKIN, Auteur ; D. DI MARINO, Auteur ; F. MURATET, Auteur ; Y. FRANK, Auteur ; R. LOZANO, Auteur ; E. E. EICHLER, Auteur ; M. KELLY, Auteur ; Jennifer BEIGHLEY, Auteur ; J. GERDTS, Auteur ; Arianne S. WALLACE, Auteur ; H. C. MEFFORD, Auteur ; Raphael BERNIER, Auteur ; A. KOLEVZON, Auteur ; Joseph D. BUXBAUM, Auteur . - 57p. Langues : Anglais (eng) in Molecular Autism > 8 (2017) . - 57p. Index. décimale : PER Périodiques Résumé : BACKGROUND: Haploinsufficiency of the forkhead-box protein P1 (FOXP1) gene leads to a neurodevelopmental disorder termed FOXP1 syndrome. Previous studies in individuals carrying FOXP1 mutations and deletions have described the presence of autism spectrum disorder (ASD) traits, intellectual disability, language impairment, and psychiatric features. The goal of the present study was to comprehensively characterize the genetic and clinical spectrum of FOXP1 syndrome. This is the first study to prospectively examine the genotype-phenotype relationship in multiple individuals with FOXP1 syndrome, using a battery of standardized clinical assessments. METHODS: Genetic and clinical data was obtained and analyzed from nine children and adolescents between the ages of 5-17 with mutations in FOXP1. Phenotypic characterization included gold standard ASD testing and norm-referenced measures of cognition, adaptive behavior, language, motor, and visual-motor integration skills. In addition, psychiatric, medical, neurological, and dysmorphology examinations were completed by a multidisciplinary team of clinicians. A comprehensive review of reported cases was also performed. All missense and in-frame mutations were mapped onto the three-dimensional structure of DNA-bound FOXP1. RESULTS: We have identified nine de novo mutations, including three frameshift, one nonsense, one mutation in an essential splice site resulting in frameshift and insertion of a premature stop codon, three missense, and one in-frame deletion. Reviewing prior literature, we found seven instances of recurrent mutations and another 34 private mutations. The majority of pathogenic missense and in-frame mutations, including all four missense mutations in our cohort, lie in the DNA-binding domain. Through structural analyses, we show that the mutations perturb amino acids necessary for binding to the DNA or interfere with the domain swapping that mediates FOXP1 dimerization. Individuals with FOXP1 syndrome presented with delays in early motor and language milestones, language impairment (expressive language > receptive language), ASD symptoms, visual-motor integration deficits, and complex psychiatric presentations characterized by anxiety, obsessive-compulsive traits, attention deficits, and externalizing symptoms. Medical features included non-specific structural brain abnormalities and dysmorphic features, endocrine and gastrointestinal problems, sleep disturbances, and sinopulmonary infections. CONCLUSIONS: This study identifies novel FOXP1 mutations associated with FOXP1 syndrome, identifies recurrent mutations, and demonstrates significant clustering of missense mutations in the DNA-binding domain. Clinical findings confirm the role FOXP1 plays in development across multiple domains of functioning. The genetic findings can be incorporated into clinical genetics practice to improve accurate genetic diagnosis of FOXP1 syndrome and the clinical findings can inform monitoring and treatment of individuals with FOXP1 syndrome. En ligne : http://dx.doi.org/10.1186/s13229-017-0172-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331

The autism spectrum phenotype in ADNP syndrome / Anne B. ARNETT in Autism Research, 11-9 (September 2018)  

Public ISBD [article]  inAutism Research > 11-9 (September 2018) . - p.1300-1310 Titre : The autism spectrum phenotype in ADNP syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Anne B. ARNETT, Auteur ; C. L. RHOADS, Auteur ; K. HOEKZEMA, Auteur ; Tychele N. TURNER, Auteur ; J. GERDTS, Auteur ; Arianne S. WALLACE, Auteur ; S. BEDROSIAN-SERMONE, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur Article en page(s) : p.1300-1310 Langues : Anglais (eng) Mots-clés : Adnp  autism spectrum disorder  developmental disorder  genetic syndrome  intellectual disability Index. décimale : PER Périodiques Résumé : Pathogenic disruptions to the activity-dependent neuroprotector homeobox (ADNP) gene are among the most common heterozygous genetic mutations associated with autism spectrum disorders (ASDs). Individuals with ADNP disruptions share a constellation of medical and psychiatric features, including ASD, intellectual disability (ID), dysmorphic features, and hypotonia. However, the profile of ASD symptoms associated with ADNP may differ from that of individuals with another ASD-associated single gene disruption or with ASD without a known genetic cause. The current study examined the ASD phenotype in a sample of representative youth with ADNP disruptions. Participants (N = 116, ages 4-22 years) included a cohort with ADNP mutations (n = 11) and three comparison groups with either a mutation to CHD8 (n = 11), a mutation to another ASD-associated gene (other mutation; n = 53), or ASD with no known genetic etiology (idiopathic ASD; n = 41). As expected, individuals with ADNP disruptions had higher rates of ID but less severe social affect symptoms compared to the CHD8 and Idiopathic ASD groups. In addition, verbal intelligence explained more variance in social impairment in the ADNP group compared to CHD8, other mutation, and idiopathic ASD comparison groups. Restricted and repetitive behaviors in the ADNP group were characterized by high levels of stereotyped motor behaviors, whereas the idiopathic ASD group showed high levels of restricted interests. Taken together, these results underscore the role of ADNP in cognitive functioning and suggest that social impairments in ADNP syndrome are consistent with severity of verbal deficits. Autism Res 2018, 11: 1300-1310. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Disruptions to the ADNP gene (i.e., ADNP syndrome) have been associated with autism spectrum disorder (ASD). This article describes intellectual disability, mild social difficulties, and severe repetitive motor movements in a group of 11 youth with ADNP Syndrome. We found lower rates of ASD than previously reported. Verbal skills explained individual variability in social impairment. This pattern suggests that the ADNP gene is primarily associated with learning and memory, and level of social difficulties is consistent with level of verbal impairment. En ligne : http://dx.doi.org/10.1002/aur.1980 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369 [article] The autism spectrum phenotype in ADNP syndrome [Texte imprimé et/ou numérique] / Anne B. ARNETT, Auteur ; C. L. RHOADS, Auteur ; K. HOEKZEMA, Auteur ; Tychele N. TURNER, Auteur ; J. GERDTS, Auteur ; Arianne S. WALLACE, Auteur ; S. BEDROSIAN-SERMONE, Auteur ; E. E. EICHLER, Auteur ; Raphael BERNIER, Auteur . - p.1300-1310. Langues : Anglais (eng) in Autism Research > 11-9 (September 2018) . - p.1300-1310 Mots-clés : Adnp  autism spectrum disorder  developmental disorder  genetic syndrome  intellectual disability Index. décimale : PER Périodiques Résumé : Pathogenic disruptions to the activity-dependent neuroprotector homeobox (ADNP) gene are among the most common heterozygous genetic mutations associated with autism spectrum disorders (ASDs). Individuals with ADNP disruptions share a constellation of medical and psychiatric features, including ASD, intellectual disability (ID), dysmorphic features, and hypotonia. However, the profile of ASD symptoms associated with ADNP may differ from that of individuals with another ASD-associated single gene disruption or with ASD without a known genetic cause. The current study examined the ASD phenotype in a sample of representative youth with ADNP disruptions. Participants (N = 116, ages 4-22 years) included a cohort with ADNP mutations (n = 11) and three comparison groups with either a mutation to CHD8 (n = 11), a mutation to another ASD-associated gene (other mutation; n = 53), or ASD with no known genetic etiology (idiopathic ASD; n = 41). As expected, individuals with ADNP disruptions had higher rates of ID but less severe social affect symptoms compared to the CHD8 and Idiopathic ASD groups. In addition, verbal intelligence explained more variance in social impairment in the ADNP group compared to CHD8, other mutation, and idiopathic ASD comparison groups. Restricted and repetitive behaviors in the ADNP group were characterized by high levels of stereotyped motor behaviors, whereas the idiopathic ASD group showed high levels of restricted interests. Taken together, these results underscore the role of ADNP in cognitive functioning and suggest that social impairments in ADNP syndrome are consistent with severity of verbal deficits. Autism Res 2018, 11: 1300-1310. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Disruptions to the ADNP gene (i.e., ADNP syndrome) have been associated with autism spectrum disorder (ASD). This article describes intellectual disability, mild social difficulties, and severe repetitive motor movements in a group of 11 youth with ADNP Syndrome. We found lower rates of ASD than previously reported. Verbal skills explained individual variability in social impairment. This pattern suggests that the ADNP gene is primarily associated with learning and memory, and level of social difficulties is consistent with level of verbal impairment. En ligne : http://dx.doi.org/10.1002/aur.1980 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369

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