Genetic risk for attention‐deficit/hyperactivity disorder is associated with amyloid‐dependent cognitive decline in older adults

Recent epidemiological studies using population‐based registers showed that patients with Attention‐Deficit/Hyperactivity Disorder (ADHD) are more likely to be diagnosed with mild cognitive impairment (MCI) and Alzheimer’s disease (AD), suggesting a higher risk for cognitive impairment in older age. Here, we aimed to assess whether genetic liability for ADHD, as measured by a validated polygenic risk score (ADHD‐PRS), is associated with cognitive decline in cognitively unimpaired (CU) subjects and whether these effects vary according to baseline amyloid‐β (Aβ) burden.