Related Experiment Video
Updated: Feb 1, 2026
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Measurement of Fronto-limbic Activity Using an Emotional Oddball Task in Children with Familial High Risk for Schizophrenia
Published on: December 2, 2015
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Transcriptomic integration nominates FOXN2 as a candidate schizophrenia risk gene
Ling Yu1, Jian Chen2, Shanshan Du1
1Department of Key Laboratory of Neurological and Psychiatric Disease Research of Yunnan Province, The Second Affiliated Hospital of Kunming Medical University, Kunming, China.
Behavioural Brain Research
|January 30, 2026
Summary
Schizophrenia (SCZ) risk may involve the gene FOXN2, linked to gut-brain axis metabolic pathways. Lower FOXN2 expression was found in SCZ patients, suggesting a potential role in SCZ pathophysiology.
Area of Science:
- Neuroscience
- Genetics
- Gastroenterology
Background:
- Schizophrenia (SCZ) is a complex disorder with increasing evidence implicating gut-brain axis dysregulation.
- Genetic links between SCZ susceptibility and gut pathways are poorly understood, especially regarding causal gene prioritization.
Purpose of the Study:
- To identify causal genes linking SCZ susceptibility to gut-related biological pathways.
- To prioritize candidate genes across multiple tissues relevant to brain-gut interactions.
Main Methods:
- Cross-tissue transcriptome-wide association study (TWAS) in five tissues (hippocampus, frontal cortex, colon, blood).
- Prioritization using MAGMA gene-based analysis and genome-wide association study (GWAS) data.
- Integrative analyses (SMR, Bayesian colocalization) to refine gene selection.
- RT-qPCR validation and two-sample Mendelian randomization (MR) for gene-gut pathway associations.
Main Results:
- Five convergent SCZ susceptibility genes identified: TVP23B, NSUN2, RPL12, FOXN2, and THAP5.
- FOXN2 emerged as the most robust candidate via Bayesian colocalization (PP.H4 = 0.995).
- Significantly lower FOXN2 expression observed in SCZ patients' blood (P = 0.02).
- Genetically proxied FOXN2 expression associated with 10 gut microbial metabolic pathways.
Conclusions:
- FOXN2 may contribute to SCZ genetic architecture and gut-brain axis metabolic pathways.
- Findings suggest exploratory links requiring further functional validation.
- Results provide a basis for future research into SCZ biological mechanisms.
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