Are There Specific Genes Associated with ADHD? 

Yes, researchers have identified several ADHD genes that appear to influence the development of attention-deficit/hyperactivity disorder. These gene variants impact how the brain handles dopamine and other chemicals that regulate attention, mood, and behaviour. 

While ADHD is complex and influenced by many factors, science has made progress in pinpointing certain genetic markers for ADHD. These aren’t single “ADHD genes” in the traditional sense but rather clusters of ADHD gene variants that together raise the likelihood of having the condition. 

Key Genetic Factors Behind ADHD and DNA 

To better understand the genetic link, here are some of the most studied genes tied to ADHD symptoms . These discoveries help explain why ADHD often runs in families and how ADHD and DNA are closely connected. 

DRD4 (Dopamine Receptor D4)

This gene affects dopamine receptors in the brain, especially those linked to novelty-seeking behaviour and attention regulation. A particular variant, known as the 7-repeat allele, is more common in people with ADHD. 

DAT1 (Dopamine Transporter Gene)

This gene controls how quickly dopamine is cleared from brain synapses. Certain DAT1 variants are associated with inattention and impulsivity, especially in children. 

SNAP-25 and SLC6A3

These genes influence how nerve cells communicate. They’ve been found to play a role in both hyperactive and inattentive types of ADHD. 

Although genetics alone do not determine outcomes, knowing your risk can help you take early steps toward effective management. Visit providers like ADHD Certify for consultations that consider both DNA insights and lived experience. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Adult ADHD vs. childhood ADHD.