Journal of Neural Transmission

, Volume 120, Issue 11, pp 1611–1617

Bipolar disorder risk alleles in children with ADHD

  • B. G. Schimmelmann
  • A. Hinney
  • A. Scherag
  • C. Pütter
  • S. Pechlivanis
  • S. Cichon
  • K.-H. Jöckel
  • S. Schreiber
  • H. E. Wichmann
  • Ö. Albayrak
  • M. Dauvermann
  • K. Konrad
  • C. Wilhelm
  • B. Herpertz-Dahlmann
  • G. Lehmkuhl
  • J. Sinzig
  • T. J. Renner
  • M. Romanos
  • A. Warnke
  • K. P. Lesch
  • A. Reif
  • J. Hebebrand
Psychiatry and Preclinical Psychiatric Studies - Original Article

DOI: 10.1007/s00702-013-1035-8

Cite this article as:
Schimmelmann, B.G., Hinney, A., Scherag, A. et al. J Neural Transm (2013) 120: 1611. doi:10.1007/s00702-013-1035-8

Abstract

Bipolar disorder (BD) and attention deficit/hyperactivity disorder (ADHD) may share common genetic risk factors as indicated by the high co-morbidity of BD and ADHD, their phenotypic overlap especially in pediatric populations, the high heritability of both disorders, and the co-occurrence in families. We therefore examined whether known polygenic BD risk alleles are associated with ADHD. We chose the eight best SNPs of the recent genome-wide association study (GWAS) of BD patients of German ancestry and the nine SNPs from international GWAS meeting a ‘genome-wide significance’ level of α = 5 × 10−8. A GWAS was performed in 495 ADHD children and 1,300 population-based controls using HumanHap550v3 and Human660 W-Quadv1 BeadArrays. We found no significant association of childhood ADHD with single BD risk alleles surviving adjustment for multiple testing. Yet, risk alleles for BD and ADHD were directionally consistent at eight of nine loci with the strongest support for three SNPs in or near NCAN,BRE, and LMAN2L. The polygene analysis for the BP risk alleles at all 14 loci indicated a higher probability of being a BD risk allele carrier in the ADHD cases as compared to the controls. At a moderate power to detect association with ADHD, if true effects were close to estimates from GWAS for BD, our results suggest that the possible contribution of BD risk variants to childhood ADHD risk is considerably lower than for BD. Yet, our findings should encourage researchers to search for common genetic risk factors in BD and childhood ADHD in future studies.

Keywords

Mood disorderGenome-wide association studyGeneticsChildhoodAdolescence

Supplementary material

702_2013_1035_MOESM1_ESM.doc (53 kb)
Supplementary material 1 (DOC 53 kb)

Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • B. G. Schimmelmann
    • 1
  • A. Hinney
    • 2
  • A. Scherag
    • 3
  • C. Pütter
    • 3
  • S. Pechlivanis
    • 3
  • S. Cichon
    • 4
    • 5
    • 6
  • K.-H. Jöckel
    • 3
    • 7
  • S. Schreiber
    • 8
  • H. E. Wichmann
    • 9
  • Ö. Albayrak
    • 2
  • M. Dauvermann
    • 1
    • 2
  • K. Konrad
    • 10
  • C. Wilhelm
    • 10
  • B. Herpertz-Dahlmann
    • 10
  • G. Lehmkuhl
    • 11
  • J. Sinzig
    • 11
    • 12
  • T. J. Renner
    • 13
  • M. Romanos
    • 13
    • 14
  • A. Warnke
    • 13
  • K. P. Lesch
    • 15
  • A. Reif
    • 15
  • J. Hebebrand
    • 2
  1. 1.University Hospital of Child and Adolescent Psychiatry, University of BernBern 60Switzerland
  2. 2.Department of Child and Adolescent PsychiatryUniversitätsklinikum Essen, University of Duisburg-EssenEssenGermany
  3. 3.Institute for Medical Informatics, Biometry and EpidemiologyUniversitätsklinikum Essen, University of Duisburg-EssenEssenGermany
  4. 4.Institute of Neuroscience and Medicine (INM-1), Structural and Functional Organization of the Brain, Genomic Imaging, Research Center JuelichJuelichGermany
  5. 5.Institute of Human GeneticsUniversity of BonnBonnGermany
  6. 6.Department of Genomics, Life and Brain CenterUniversity of BonnBonnGermany
  7. 7.Heinz Nixdorf Recall Study GroupEssenGermany
  8. 8.Popgen Study Group; Institute of Clinical Molecular Biology, University Hospital Schleswig-HolsteinKielGermany
  9. 9.KORA Study Group; Institute of Epidemiology, Helmholtz Center Munich, German Research Center for Environmental HealthMunichGermany
  10. 10.Department of Child and Adolescent PsychiatryTechnical University of AachenAachenGermany
  11. 11.Department of Child and Adolescent PsychiatryUniversity of CologneCologneGermany
  12. 12.Department for Child and Adolescent Psychiatry and PsychotherapyLVR-Klinik BonnBonnGermany
  13. 13.Department of Child and Adolescent PsychiatryJulius-Maximilians-University WuerzburgWuerzburgGermany
  14. 14.Department of Child and Adolescent PsychiatryUniversity MunichMunichGermany
  15. 15.Department of Psychiatry and PsychotherapyJulius-Maximilians-University WürzburgWürzburgGermany