Cited by 71Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersAttention Deficit Hyperactivity Disorder

The Roots of Autism and ADHD Twin Study in Sweden (RATSS)

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Bölte, Sven, Willfors, Charlotte, Berggren, Steve, Norberg, Joakim, Poltrago, Lina, Mevel, Katell, Coco, Christina, Fransson, Peter +14 more·2014·Twin Research and Human Genetics

Abstract

Neurodevelopmental disorders affect a substantial minority of the general population. Their origins are still largely unknown, but a complex interplay of genetic and environmental factors causing disturbances of the central nervous system's maturation and a variety of higher cognitive skills is presumed. Only limited research of rather small sample size and narrow scope has been conducted in neurodevelopmental disorders using a twin-differences design. The Roots of Autism and ADHD Twin Study in Sweden (RATSS) is an ongoing project targeting monozygotic twins discordant for categorical or dimensional autistic and inattentive/hyperactive-impulsive phenotypes as well as other neurodevelopmental disorders, and typically developing twin controls. Included pairs are 9 years of age or older, and comprehensively assessed for psychopathology, medical history, neuropsychology, and dysmorphology, as well as structural, functional, and molecular brain imaging. Specimens are collected for induced pluripotent (iPS) and neuroepithelial stem cells, genetic, gut bacteria, protein-/monoamine, and electron microscopy analyses. RATSS's objective is to generate a launch pad for novel surveys to understand the complexity of genotype-environment-phenotype interactions in autism spectrum disorder and attention-deficit hyperactivity disorder (ADHD). By October 2013, RATSS had collected data from 55 twin pairs, among them 10 monozygotic pairs discordant for autism spectrum disorder, seven for ADHD, and four for other neurodevelopmental disorders. This article describes the design, recruitment, data collection, measures, collected pairs’ characteristics, as well as ongoing and planned analyses in RATSS. Potential gains of the study comprise the identification of environmentally mediated biomarkers, the emergence of candidates for drug development, translational modeling, and new leads for prevention of incapacitating outcomes.

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  • The Roots of Autism and ADHD Twin Study Sweden (RATSS) is the largest collection of deeply clinically phenotyped autism twins.

    “The Roots of Autism and ADHD Twin Study Sweden (RATSS) [272], a sub-study of the population-based Child and Adolescent Twin Study Sweden (CATSS) [273], is the largest collection of deeply clinically phenotyped autism twins.”

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Research works printed but not linked: 3

  1. Angold, A., Costello, E. J., & Erkanli, A. (1999). Comorbid- ity. Journal of Child Psychology and Psychiatry and Allied Disciplines, 40, 57-87.
  2. Wazana, A., Bresnahan, M., & Kline, J. (2007). Journal of the American Academy of Child and Adolescent Psychiatry, 46, 721-730.
  3. Wong, C. C. Y., Meaburn, E. M., Ronald, A., Price, T. S., Jeffries, A. R., Schalkwyk, L. C., . . . Mill, J. (in press). Methylomic analysis of monozygotic twins discordant for autism spectrum disorder (ASD) and related behavioural traits. Molecular Psychiatry.

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Authors
Bölte, S., Willfors, C., Berggren, S., Norberg, J., Poltrago, L., Mevel, K., Coco, C., Fransson, P., Borg, J., Sitnikov, R., Toro, R., Tammimies, K., Anderlid, B.-M., Nordgren, A., Falk, A., Meyer, U., Kere, J., Landén, M., Dalman, C., Ronald, A., Anckarsäter, H., & Lichtenstein, P.
Affiliations
  • Region Stockholm (SE)
  • Karolinska Institutet (SE)
  • Centre National de la Recherche Scientifique (FR)
  • Karolinska University Hospital (SE)
  • Institut Pasteur (FR)
  • ETH Zurich (CH)
  • University of London (GB)
  • University of Gothenburg (SE)
Corresponding author
Bölte, Sven
Venue
Twin Research and Human Genetics
Published
2014-04-15
Volume
17
Issue
3
Pages
164-176
ISSN
  • 1832-4274 (ISSN-L)
  • 1839-2628
OpenAlex
W2102707475
Cited by
71
References
85
Citations by year
2026: 3 · 2025: 5 · 2024: 4 · 2023: 9 · 2022: 5 · 2021: 9 · 2020: 6 · 2019: 9 · 2018: 7 · 2017: 7 · 2016: 4 · 2015: 2 · 2014: 1
FWCI
2.60
Type
journal article
Language
en
Open access
Locations
  • Twin Research and Human Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • BIROn (Birkbeck, University of London) (acceptedVersion)
  • HAL (submittedVersion, other-oa)
  • BIROn (Birkbeck, University of London) (submittedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • Figshare (submittedVersion, cc-by-nc-nd)
  • Open Archive (Karolinska Institutet) (submittedVersion, cc-by-nc-nd)
  • Repository for Publications and Research Data (ETH Zurich) (submittedVersion, other-oa)
  • ETH Zürich Research Collection
Funders
  • European Federation of Pharmaceutical Industries and Associations (FP7/20072013)
  • European Commission (2007–2013, FP7 2007-2013, 115300, FP7/2007)
  • VINNOVA (259‐2012‐24, 115300)
  • Svenska Forskningsrådet Formas (259-2012-24, 115300)
  • Hjärnfonden (115300)
  • Stockholms Läns Landsting
  • Vetenskapsrådet (FP7/2007-2013, 115300, 259-2012-24)
  • Magnus Bergvalls Stiftelse
  • Stiftelsen Sunnerdahls Handikappfond
  • Sällskapet Barnavård
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
Keywords
autism spectrum disorder, attention deficit hyperactivity disorder, monozygotic twins, discordant twins, neurodevelopmental disorders, gene-environment interaction, environmental risk factors, biomarkers, neuroimaging, gut microbiota, induced pluripotent stem cells, neuroepithelial stem cells, monoamines, dysmorphology
MeSH terms
Adolescent, Adult, Attention Deficit Disorder with Hyperactivity, Autistic Disorder, Child, Cognition, Diseases in Twins, Environment, Female, Humans, Male, Phenotype, Psychiatric Status Rating Scales, Sweden, Twins, Dizygotic, Twins, Monozygotic, Young Adult, Neuroimaging

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