ADHD and Comorbidity: Implications for clinical practice and molecular genetics

Funded Activity Summary

ADHD is emerging as the most common, controversial childhood behavioural problem. Previously we have shown that much of the confusion may lie in the fact that ADHD is inherited as a continuum throughout the entire population, only some people having such a strong genetic potential that they warrant the label ADHD. The threshold to achieve this label is partly a community one, leading to the argument over who should be labelled and treated. This grant goes further in examining the possibility that there is more than one type of ADHD. Some ADHD children have other behavioural problems such as conduct disorder or learning problems. Some have problems throughout their lives while others grow out of it. In Australia we are unique in having developed the most extensive twin databases world-wide and have already studied aspects of ADHD both in the children and their parents. In this grant we shall explore whether there are distinct genetic types of ADHD, characterised not just by their ADHD symptoms but also by the other behavioural problems they experience and by what happens as they grow-up. Such information is invaluable in developing a treatment program dealing with all aspects of the ADHD and also addresses the question of what will happen as they get older. No other study internationally has such extensive data to address these key questions., vital both to clinicians and families. Given the significant genetic component to ADHD, the next possibility is to find the genes involved in the different types. Knowing what these genes do may help in the development of medications more targeted to specific patterns of problems. Recently genes have been identified which may be involved in specific types of ADHD, as well as genes involved in associated problems such as reading disability and substance abuse. This study offers the potential to clearly identify the role of these genes and so assist in improved diagnosis and treatment interventions.

Funded Activity Details

Start Date: 01-01-2000

End Date: 01-01-2002

Funding Scheme: NHMRC Project Grants

Funding Amount: $284,878.00

Funder: National Health and Medical Research Council

Research Topics

ANZSRC Field of Research (FoR)

Psychiatry

ANZSRC Socio-Economic Objective (SEO)

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Other Keywords

Attention Deficit Hyperactivity Disorder | Child Psychiatry | Conduct disorder | Genetics | Learning problems | Molecular genetics | Substance abuse | Twin research

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