DRD4 variants may affect responses to stress and trauma, potentially influencing individual resilience or vulnerability.

University of Minnesota

The 7-repeat allele of DRD4 is linked to lower dopamine affinity and is associated with many psychiatric disorders such as ADHD, substance dependencies, and personality traits.

DRD4 and ADHD 

DRD4 variants have also been explored in relation to developmental disorders like autism, though their role remains unclear.

DRD4 and Autism 

Associations have been found between DRD4 variants and substance dependencies, including alcohol and opioid dependence, as well as nicotine dependence and pathological gambling.

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