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Attention-deficit/hyperactivity disorder genomics: update for clinicians
Josephine Elia1, Jillan Sackett, Terri Turner
1Department Psychiatry, The University of Pennsylvania, Philadelphia, PA 19104-6209, USA. joelia1@verizon.net
Attention deficit hyperactivity disorder (ADHD) is a complex genomic disorder, not caused by single genes. Research reveals numerous rare variants and epigenetic factors contribute to ADHD, paving the way for new treatments.
Area of Science:
- Neuroscience
- Genetics
- Psychiatry
Background:
- Attention deficit hyperactivity disorder (ADHD) is a highly heritable familial disorder.
- Previous research identified candidate genes but found they confer minimal risk for ADHD.
- This suggests ADHD is not primarily caused by common genetic variants.
Purpose of the Study:
- To explore the genetic underpinnings of ADHD beyond single common variants.
- To investigate the role of rare structural variants and epigenetic factors in ADHD etiology.
- To understand the genetic basis of ADHD for improved diagnosis and treatment.
Main Methods:
- Genome-wide genotyping to identify structural variants.
- Analysis of heritability studies in humans.
- Utilizing animal models to study epigenetic influences during development.
Main Results:
- Discovery of rare structural variants implicating ADHD as a genomic disorder.
- Identification of numerous rare variants disrupting common neuronal pathways, leading to ADHD phenotypes.
- Evidence supporting the significant role of epigenetic factors in ADHD risk.
Conclusions:
- ADHD is a complex genomic disorder influenced by numerous rare variants and epigenetic factors.
- Future discoveries promise improved diagnosis, individualized treatments, cures, and prevention strategies for ADHD.
- Ethical considerations regarding genetic data privacy and misuse require careful management.
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