Psychotherapy and psychosomatics · 2026
Schizophrenia Genetic Liability Drives Chronic Disease Risk in Unaffected Individuals through Immune and Metabolic Pathways.
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Wei Wenming, Cheng Bolun, He Dan, Qi Xin, Hui Jingni, Feng Jin, Cheng Shiqiang, Yang Xuena, Zhao Boyue, Pan Chuyu, Gou Yifan, Wen Yan, Liu Huan, Jia Yumeng, Liu Li, Zhang Feng
Аннотация
INTRODUCTION: Comorbidity between schizophrenia (SCZ) and chronic diseases is well documented. However, it remains unknown whether unaffected individuals with elevated SCZ genetic liability also face increased risk, and what biological pathways may underlie these associations.
METHODS: We analyzed 426,237 UK Biobank participants without SCZ to test associations between SCZ polygenic risk score (SCZ-PRS) and 24 chronic diseases using logistic regression. Multi-omics mediation analysis incorporated seven inflammatory markers, 1,463 plasma proteins, and 250 circulating metabolites to delineate intermediate pathways linking genetic liability to disease outcomes. Genetic colocalization analyses were further conducted to determine whether SCZ genetic liability and chronic diseases share common association signals at the locus level.
RESULTS: Higher SCZ-PRS was associated with increased risk of asthma (odds ratio [OR] = 1.018, 95% confidence interval [CI]: 1.008-1.029), chronic obstructive pulmonary disease (1.033, 1.017-1.050), liver disease (1.033, 1.015-1.051), peptic ulcer (1.032, 1.013-1.051), and fluid/electrolyte disorders (1.027, 1.014-1.040), while conferring reduced risk of diabetes (0.979, 0.968-0.991) and renal disease (0.978, 0.964-0.992). Multi-omics mediation revealed that these bidirectional associations were linked to immune cell activity (notably eosinophils, neutrophils, and monocytes), lipid and energy metabolism (lipoprotein composition, fatty-acid unsaturation, creatinine, lactate), and immune-regulatory proteins (e.g., HLA-E, CD1C, SPINT1). Shared genetic signals, notably at HLA and SLC39A8, reinforced these immune-metabolic pathways.
CONCLUSIONS: SCZ-PRS is associated with multiple chronic diseases among unaffected individuals, and these associations suggest shared biological pathways. These findings support a psycho-neuro-immune-metabolic interpretation of SCZ-related chronic physical comorbidity and a more integrated psychosomatic understanding of the shared biology linking psychiatric vulnerability with chronic physical disease.
METHODS: We analyzed 426,237 UK Biobank participants without SCZ to test associations between SCZ polygenic risk score (SCZ-PRS) and 24 chronic diseases using logistic regression. Multi-omics mediation analysis incorporated seven inflammatory markers, 1,463 plasma proteins, and 250 circulating metabolites to delineate intermediate pathways linking genetic liability to disease outcomes. Genetic colocalization analyses were further conducted to determine whether SCZ genetic liability and chronic diseases share common association signals at the locus level.
RESULTS: Higher SCZ-PRS was associated with increased risk of asthma (odds ratio [OR] = 1.018, 95% confidence interval [CI]: 1.008-1.029), chronic obstructive pulmonary disease (1.033, 1.017-1.050), liver disease (1.033, 1.015-1.051), peptic ulcer (1.032, 1.013-1.051), and fluid/electrolyte disorders (1.027, 1.014-1.040), while conferring reduced risk of diabetes (0.979, 0.968-0.991) and renal disease (0.978, 0.964-0.992). Multi-omics mediation revealed that these bidirectional associations were linked to immune cell activity (notably eosinophils, neutrophils, and monocytes), lipid and energy metabolism (lipoprotein composition, fatty-acid unsaturation, creatinine, lactate), and immune-regulatory proteins (e.g., HLA-E, CD1C, SPINT1). Shared genetic signals, notably at HLA and SLC39A8, reinforced these immune-metabolic pathways.
CONCLUSIONS: SCZ-PRS is associated with multiple chronic diseases among unaffected individuals, and these associations suggest shared biological pathways. These findings support a psycho-neuro-immune-metabolic interpretation of SCZ-related chronic physical comorbidity and a more integrated psychosomatic understanding of the shared biology linking psychiatric vulnerability with chronic physical disease.