A genome-wide pleiotropy study between atopic dermatitis and neuropsychiatric disorders.

Scientists studied the genetic links between eczema (atopic dermatitis) and mental health conditions including autism, ADHD, bipolar disorder, depression, and schizophrenia. They found that eczema shares genetic factors with ADHD, depression, and bipolar disorder. The research identified 37 genetic locations and 86 genes involved in inflammation that may explain why these conditions often occur together. The study suggests that having genes for depression or bipolar disorder may increase the risk of developing eczema.

This genome-wide study investigated genetic relationships between atopic dermatitis (AD) and five neuropsychiatric conditions including autism spectrum disorder, ADHD, bipolar disorder, major depression, and schizophrenia. Researchers found significant positive genetic correlations between AD and ADHD, major depression, and bipolar disorder. The analysis identified 37 pleiotropic genetic loci involving 86 genes in inflammatory pathways, including TNF and JAK-STAT3 signaling. Mendelian randomization analysis provided evidence that genetic predisposition to major depression and bipolar disorder causally increases AD risk.

These findings reveal shared immune-related pathways between skin and neuropsychiatric conditions, offering insights into why these conditions often co-occur and identifying potential therapeutic targets.

Results suggest clinicians should screen for neuropsychiatric conditions in patients with atopic dermatitis, particularly ADHD, depression, and bipolar disorder. Shared inflammatory pathways indicate potential for treatments targeting TNF and JAK-STAT3 signaling. Findings support integrated care approaches addressing both skin and mental health symptoms.

Sample sizes not reported in the abstract. Study focused on genetic associations which may not capture environmental factors contributing to comorbidity. Clinical implications require validation in intervention studies. Findings may not generalize across different populations or ethnicities.

Atopic dermatitis (AD) frequently co-occurs with neuropsychiatric disorders, yet the genetic basis for this comorbidity is unclear. We performed a large-scale genome-wide pleiotropy approach to investigate the genetic correlations and causal associations between AD and five neuropsychiatric disorders, attention deficit hyperactivity disorder (ADHD), autism spectrum disorder (ASD), bipolar disorder (BP), major depressive disorder (MDD), and schizophrenia (SCZ). We identified significant positive genetic correlations between AD and ADHD, MDD and BP. Genome-wide pleiotropy scans identified 37 distinct pleiotropic loci, mapped in 86 unique genes participating in inflammatory pathways.

Pleiotropy-informed target prioritization facilitated the identification of novel pathophysiological mechanisms for AD and putative drug targets, such as members of TNF and JAK-STAT3 signaling. Mendelian randomization provided evidence of a causal relationship between genetic liability to MDD and BP in increased AD risk, independent of sample overlap. Our findings elucidate immune-related pathway crosstalks between AD and neuropsychiatric disorders with implications for therapeutic interventions.