Leveraging blood serotonin as an endophenotype to identify de novo and rare variants involved in autism / R. CHEN in Molecular Autism, 8 (2017)  

Public ISBD [article]  inMolecular Autism > 8 (2017) . - 14p. Titre : Leveraging blood serotonin as an endophenotype to identify de novo and rare variants involved in autism Type de document : Texte imprimé et/ou numérique Auteurs : R. CHEN, Auteur ; L. K. DAVIS, Auteur ; S. GUTER, Auteur ; Q. WEI, Auteur ; S. JACOB, Auteur ; M. H. POTTER, Auteur ; Nancy J. COX, Auteur ; Edwin H. Jr COOK, Auteur ; J. S. SUTCLIFFE, Auteur ; B. LI, Auteur Article en page(s) : 14p. Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/*genetics/metabolism  Endophenotypes/blood  Exome  Female  Forkhead Transcription Factors/*genetics  Genetic Predisposition to Disease  Humans  Jumonji Domain-Containing Histone Demethylases/*genetics  Male  *Mutation  Nuclear Proteins/*genetics  Repressor Proteins/*genetics  Sequence Analysis, DNA/methods  Serotonin/*blood  Signal Transduction  Ubiquitin-Specific Proteases/*genetics  *5-ht  *Autism  *Autism spectrum disorder  *Compound heterozygotes  *De novo mutation  *Endophenotype  *Group-wise transmission/disequilibrium test  *Hyperserotonemia  *Rare variants  *Serotonin  *Whole exome sequencing Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is one of the most highly heritable neuropsychiatric disorders, but underlying molecular mechanisms are still unresolved due to extreme locus heterogeneity. Leveraging meaningful endophenotypes or biomarkers may be an effective strategy to reduce heterogeneity to identify novel ASD genes. Numerous lines of evidence suggest a link between hyperserotonemia, i.e., elevated serotonin (5-hydroxytryptamine or 5-HT) in whole blood, and ASD. However, the genetic determinants of blood 5-HT level and their relationship to ASD are largely unknown. METHODS: In this study, pursuing the hypothesis that de novo variants (DNVs) and rare risk alleles acting in a recessive mode may play an important role in predisposition of hyperserotonemia in people with ASD, we carried out whole exome sequencing (WES) in 116 ASD parent-proband trios with most (107) probands having 5-HT measurements. RESULTS: Combined with published ASD DNVs, we identified USP15 as having recurrent de novo loss of function mutations and discovered evidence supporting two other known genes with recurrent DNVs (FOXP1 and KDM5B). Genes harboring functional DNVs significantly overlap with functional/disease gene sets known to be involved in ASD etiology, including FMRP targets and synaptic formation and transcriptional regulation genes. We grouped the probands into High-5HT and Normal-5HT groups based on normalized serotonin levels, and used network-based gene set enrichment analysis (NGSEA) to identify novel hyperserotonemia-related ASD genes based on LoF and missense DNVs. We found enrichment in the High-5HT group for a gene network module (DAWN-1) previously implicated in ASD, and this points to the TGF-beta pathway and cell junction processes. Through analysis of rare recessively acting variants (RAVs), we also found that rare compound heterozygotes (CHs) in the High-5HT group were enriched for loci in an ASD-associated gene set. Finally, we carried out rare variant group-wise transmission disequilibrium tests (gTDT) and observed significant association of rare variants in genes encoding a subset of the serotonin pathway with ASD. CONCLUSIONS: Our study identified USP15 as a novel gene implicated in ASD based on recurrent DNVs. It also demonstrates the potential value of 5-HT as an effective endophenotype for gene discovery in ASD, and the effectiveness of this strategy needs to be further explored in studies of larger sample sizes. En ligne : http://dx.doi.org/10.1186/s13229-017-0130-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329 [article] Leveraging blood serotonin as an endophenotype to identify de novo and rare variants involved in autism [Texte imprimé et/ou numérique] / R. CHEN, Auteur ; L. K. DAVIS, Auteur ; S. GUTER, Auteur ; Q. WEI, Auteur ; S. JACOB, Auteur ; M. H. POTTER, Auteur ; Nancy J. COX, Auteur ; Edwin H. Jr COOK, Auteur ; J. S. SUTCLIFFE, Auteur ; B. LI, Auteur . - 14p. Langues : Anglais (eng) in Molecular Autism > 8 (2017) . - 14p. Mots-clés : Autism Spectrum Disorder/*genetics/metabolism  Endophenotypes/blood  Exome  Female  Forkhead Transcription Factors/*genetics  Genetic Predisposition to Disease  Humans  Jumonji Domain-Containing Histone Demethylases/*genetics  Male  *Mutation  Nuclear Proteins/*genetics  Repressor Proteins/*genetics  Sequence Analysis, DNA/methods  Serotonin/*blood  Signal Transduction  Ubiquitin-Specific Proteases/*genetics  *5-ht  *Autism  *Autism spectrum disorder  *Compound heterozygotes  *De novo mutation  *Endophenotype  *Group-wise transmission/disequilibrium test  *Hyperserotonemia  *Rare variants  *Serotonin  *Whole exome sequencing Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is one of the most highly heritable neuropsychiatric disorders, but underlying molecular mechanisms are still unresolved due to extreme locus heterogeneity. Leveraging meaningful endophenotypes or biomarkers may be an effective strategy to reduce heterogeneity to identify novel ASD genes. Numerous lines of evidence suggest a link between hyperserotonemia, i.e., elevated serotonin (5-hydroxytryptamine or 5-HT) in whole blood, and ASD. However, the genetic determinants of blood 5-HT level and their relationship to ASD are largely unknown. METHODS: In this study, pursuing the hypothesis that de novo variants (DNVs) and rare risk alleles acting in a recessive mode may play an important role in predisposition of hyperserotonemia in people with ASD, we carried out whole exome sequencing (WES) in 116 ASD parent-proband trios with most (107) probands having 5-HT measurements. RESULTS: Combined with published ASD DNVs, we identified USP15 as having recurrent de novo loss of function mutations and discovered evidence supporting two other known genes with recurrent DNVs (FOXP1 and KDM5B). Genes harboring functional DNVs significantly overlap with functional/disease gene sets known to be involved in ASD etiology, including FMRP targets and synaptic formation and transcriptional regulation genes. We grouped the probands into High-5HT and Normal-5HT groups based on normalized serotonin levels, and used network-based gene set enrichment analysis (NGSEA) to identify novel hyperserotonemia-related ASD genes based on LoF and missense DNVs. We found enrichment in the High-5HT group for a gene network module (DAWN-1) previously implicated in ASD, and this points to the TGF-beta pathway and cell junction processes. Through analysis of rare recessively acting variants (RAVs), we also found that rare compound heterozygotes (CHs) in the High-5HT group were enriched for loci in an ASD-associated gene set. Finally, we carried out rare variant group-wise transmission disequilibrium tests (gTDT) and observed significant association of rare variants in genes encoding a subset of the serotonin pathway with ASD. CONCLUSIONS: Our study identified USP15 as a novel gene implicated in ASD based on recurrent DNVs. It also demonstrates the potential value of 5-HT as an effective endophenotype for gene discovery in ASD, and the effectiveness of this strategy needs to be further explored in studies of larger sample sizes. En ligne : http://dx.doi.org/10.1186/s13229-017-0130-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329

Repetitive behavior profiles: Consistency across autism spectrum disorder cohorts and divergence from Prader-Willi syndrome / C. G. FLORES in Journal of Neurodevelopmental Disorders, 3-4 (December 2011)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 3-4 (December 2011) . - p.316-24 Titre : Repetitive behavior profiles: Consistency across autism spectrum disorder cohorts and divergence from Prader-Willi syndrome Type de document : Texte imprimé et/ou numérique Auteurs : C. G. FLORES, Auteur ; G. VALCANTE, Auteur ; S. GUTER, Auteur ; A. ZAYTOUN, Auteur ; E. WRAY, Auteur ; L. BELL, Auteur ; S. JACOB, Auteur ; M. H. LEWIS, Auteur ; D. J. DRISCOLL, Auteur ; Edwin H. Jr COOK, Auteur ; S. J. KIM, Auteur Article en page(s) : p.316-24 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Restricted and repetitive behavior (RRB) is a group of heterogeneous maladaptive behaviors. RRB is one of the key diagnostic features of autism spectrum disorders (ASDs) and also commonly observed in Prader-Willi syndrome (PWS). In this study, we assessed RRB using the Repetitive Behavior Scale-Revised (RBS-R) in two ASD samples (University of Illinois at Chicago [UIC] and University of Florida [UF]) and one PWS sample. We compared the RBS-R item endorsements across three ASD cohorts (UIC, UF and an ASD sample from Lam, The Repetitive Behavior Scale-Revised: independent validation and the effect of subject variables, PhD thesis, 2004), and a PWS sample. We also compared the mean RBS-R subscale/sum scores across the UIC, UF and PWS samples; across the combined ASD (UIC + UF), PWS-deletion and PWS-disomy groups; and across the combined ASD sample, PWS subgroup with a Social Communication Questionnaire (SCQ) score >/=15, and PWS subgroup with a SCQ score <15. Despite the highly heterogeneous nature, the three ASD samples (UIC, UF and Lam's) showed a similar pattern of the RBS-R endorsements, and the mean RBS-R scores were not different between the UIC and UF samples. However, higher RRB was noted in the ASD sample compared with the PWS sample, as well as in the PWS subgroup with a SCQ score >/=15 compared with the PWS subgroup with a SCQ score <15. Study limitations include a small sample size, a wide age range of our participants, and not controlling for potential covariates. A future replication study using a larger sample and further investigation into the genetic bases of overlapping ASD and RRB phenomenology are needed, given the higher RRB in the PWS subgroup with a SCQ score >/=15. En ligne : http://dx.doi.org/10.1007/s11689-011-9094-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343 [article] Repetitive behavior profiles: Consistency across autism spectrum disorder cohorts and divergence from Prader-Willi syndrome [Texte imprimé et/ou numérique] / C. G. FLORES, Auteur ; G. VALCANTE, Auteur ; S. GUTER, Auteur ; A. ZAYTOUN, Auteur ; E. WRAY, Auteur ; L. BELL, Auteur ; S. JACOB, Auteur ; M. H. LEWIS, Auteur ; D. J. DRISCOLL, Auteur ; Edwin H. Jr COOK, Auteur ; S. J. KIM, Auteur . - p.316-24. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 3-4 (December 2011) . - p.316-24 Index. décimale : PER Périodiques Résumé : Restricted and repetitive behavior (RRB) is a group of heterogeneous maladaptive behaviors. RRB is one of the key diagnostic features of autism spectrum disorders (ASDs) and also commonly observed in Prader-Willi syndrome (PWS). In this study, we assessed RRB using the Repetitive Behavior Scale-Revised (RBS-R) in two ASD samples (University of Illinois at Chicago [UIC] and University of Florida [UF]) and one PWS sample. We compared the RBS-R item endorsements across three ASD cohorts (UIC, UF and an ASD sample from Lam, The Repetitive Behavior Scale-Revised: independent validation and the effect of subject variables, PhD thesis, 2004), and a PWS sample. We also compared the mean RBS-R subscale/sum scores across the UIC, UF and PWS samples; across the combined ASD (UIC + UF), PWS-deletion and PWS-disomy groups; and across the combined ASD sample, PWS subgroup with a Social Communication Questionnaire (SCQ) score >/=15, and PWS subgroup with a SCQ score <15. Despite the highly heterogeneous nature, the three ASD samples (UIC, UF and Lam's) showed a similar pattern of the RBS-R endorsements, and the mean RBS-R scores were not different between the UIC and UF samples. However, higher RRB was noted in the ASD sample compared with the PWS sample, as well as in the PWS subgroup with a SCQ score >/=15 compared with the PWS subgroup with a SCQ score <15. Study limitations include a small sample size, a wide age range of our participants, and not controlling for potential covariates. A future replication study using a larger sample and further investigation into the genetic bases of overlapping ASD and RRB phenomenology are needed, given the higher RRB in the PWS subgroup with a SCQ score >/=15. En ligne : http://dx.doi.org/10.1007/s11689-011-9094-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343

Whole Blood Serotonin Levels and Platelet 5-HT2A Binding in Autism Spectrum Disorder / E. AARON in Journal of Autism and Developmental Disorders, 49-6 (June 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-6 (June 2019) . - p.2417-2425 Titre : Whole Blood Serotonin Levels and Platelet 5-HT2A Binding in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : E. AARON, Auteur ; A. MONTGOMERY, Auteur ; X. REN, Auteur ; S. GUTER, Auteur ; George M. ANDERSON, Auteur ; Ana M.D. CARNEIRO, Auteur ; S. JACOB, Auteur ; M. MOSCONI, Auteur ; G. N. PANDEY, Auteur ; E. COOK, Auteur ; J. VEENSTRA-VANDERWEELE, Auteur Article en page(s) : p.2417-2425 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Biomarker  Hyperserotonemia  Receptor  Serotonin Index. décimale : PER Périodiques Résumé : Elevated whole blood serotonin (WB5-HT) is a well-replicated biomarker in autism spectrum disorder (ASD). Decreased platelet serotonin receptor 5-HT2A binding has been reported in ASD. WB5-HT levels and platelet 5-HT2A specific binding were obtained from 110 individuals with ASD and 18 controls. Individuals with ASD had significantly higher WB5-HT levels than controls. There was no difference in the platelet 5-HT2A specific binding between groups. Multiple regression analyses revealed that platelet 5-HT2A binding significantly predicted WB5-HT in the control sample but not in the ASD sample. These results indicate that the relationship between WB5-HT and platelet 5-HT2A binding differs depending on ASD diagnosis, suggesting differences in platelet 5-HT system regulation in ASD. En ligne : https://dx.doi.org/10.1007/s10803-019-03989-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=400 [article] Whole Blood Serotonin Levels and Platelet 5-HT2A Binding in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / E. AARON, Auteur ; A. MONTGOMERY, Auteur ; X. REN, Auteur ; S. GUTER, Auteur ; George M. ANDERSON, Auteur ; Ana M.D. CARNEIRO, Auteur ; S. JACOB, Auteur ; M. MOSCONI, Auteur ; G. N. PANDEY, Auteur ; E. COOK, Auteur ; J. VEENSTRA-VANDERWEELE, Auteur . - p.2417-2425. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-6 (June 2019) . - p.2417-2425 Mots-clés : Autism spectrum disorder  Biomarker  Hyperserotonemia  Receptor  Serotonin Index. décimale : PER Périodiques Résumé : Elevated whole blood serotonin (WB5-HT) is a well-replicated biomarker in autism spectrum disorder (ASD). Decreased platelet serotonin receptor 5-HT2A binding has been reported in ASD. WB5-HT levels and platelet 5-HT2A specific binding were obtained from 110 individuals with ASD and 18 controls. Individuals with ASD had significantly higher WB5-HT levels than controls. There was no difference in the platelet 5-HT2A specific binding between groups. Multiple regression analyses revealed that platelet 5-HT2A binding significantly predicted WB5-HT in the control sample but not in the ASD sample. These results indicate that the relationship between WB5-HT and platelet 5-HT2A binding differs depending on ASD diagnosis, suggesting differences in platelet 5-HT system regulation in ASD. En ligne : https://dx.doi.org/10.1007/s10803-019-03989-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=400

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