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<p>Cognitive impairment is an important but often under-researched symptom in psychosis. Both psychosis and cognition are highly heritable and there is evidence of a genetic effect on the relationship between them. Using samples of adults (<i>N</i> = 4 506) and children (<i>N</i> = 10 981), we investigated the effect of schizophrenia and bipolar disorder polygenic scores on cognitive performance, and intelligence and educational attainment polygenic scores on psychosis presentation. Schizophrenia polygenic score was negatively associated with visuospatial processing in adults (beta: −0.0569; 95% confidence interval [CI]: −0.0926, −0.0212) and working memory (beta: −0.0432; 95% CI: −0.0697, −0.0168), processing speed (beta: −0.0491; 95% CI: −0.0760, −0.0223), episodic memory (betas: −0.0581 to −0.0430; 95% CIs: −0.0847, −0.0162), executive functioning (beta: −0.0423; 95% CI: −0.0692, −0.0155), fluid intelligence (beta: −0.0583; 95% CI: −0.0847, −0.0320), and total intelligence (beta: −0.0458; 95% CI: −0.0709, −0.0206) in children. Bipolar disorder polygenic score was not associated with any cognitive domains studied. Lower polygenic scores for intelligence were associated with greater odds of psychosis in adults (odds ratio [OR]: 0.886; 95% CI: 0.811–0.968). In children, lower polygenic scores for both intelligence (OR: 0.829; 95% CI: 0.777–0.884) and educational attainment (OR: 0.771; 95% CI: 0.724–0.821) were associated with greater odds of psychotic-like experiences. Our findings suggest that polygenic scores for both cognitive phenotypes and psychosis phenotypes are implicated in the relationship between psychosis and cognitive performance. Further research is needed to determine the direction of this effect and the mechanisms by which it occurs.</p>

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Effect of polygenic scores on the relationship between psychosis and cognition

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月21日

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  • Lauren Varney,
  • Krisztina Jedlovszky,
  • Baihan Wang,
  • Stephen Murtough,
  • Marius Cotic,
  • Alvin Richards-Belle,
  • Noushin Saadullah Khani,
  • Robin Lau,
  • Rosemary Abidoph,
  • Andrew McQuillin,
  • Johan H. Thygesen,
  • Neeltje EM van Haren,
  • Maria J. Arranz,
  • Marta Di Forti,
  • Ina Giegling,
  • Cathryn Lewis,
  • Kuang Lin,
  • Andrew M. McIntosh,
  • John Powell,
  • Dan Rujescu,
  • Matthias Weisbrod,
  • Therese van Amelsvoort,
  • Wiepke Cahn,
  • Lieuwe de Haan,
  • Marieke van der Pluijm,
  • Claudia J. P. Simons,
  • Jim van Os,
  • Wim Veling,
  • Behrooz Z. Alizadeh,
  • Stephan Bender,
  • Benedicto Crespo-Facorro,
  • Jeremy Hall,
  • Conrad Iyegbe,
  • Eugenia Kravariti,
  • Stephen M. Lawrie,
  • Ignacio Mata,
  • Colm McDonald,
  • Robin M. Murray,
  • Diana Prata,
  • Timothea Toulopoulou,
  • Neeltje EM van Haren,
  • Elvira Bramon

摘要

Cognitive impairment is an important but often under-researched symptom in psychosis. Both psychosis and cognition are highly heritable and there is evidence of a genetic effect on the relationship between them. Using samples of adults (N = 4 506) and children (N = 10 981), we investigated the effect of schizophrenia and bipolar disorder polygenic scores on cognitive performance, and intelligence and educational attainment polygenic scores on psychosis presentation. Schizophrenia polygenic score was negatively associated with visuospatial processing in adults (beta: −0.0569; 95% confidence interval [CI]: −0.0926, −0.0212) and working memory (beta: −0.0432; 95% CI: −0.0697, −0.0168), processing speed (beta: −0.0491; 95% CI: −0.0760, −0.0223), episodic memory (betas: −0.0581 to −0.0430; 95% CIs: −0.0847, −0.0162), executive functioning (beta: −0.0423; 95% CI: −0.0692, −0.0155), fluid intelligence (beta: −0.0583; 95% CI: −0.0847, −0.0320), and total intelligence (beta: −0.0458; 95% CI: −0.0709, −0.0206) in children. Bipolar disorder polygenic score was not associated with any cognitive domains studied. Lower polygenic scores for intelligence were associated with greater odds of psychosis in adults (odds ratio [OR]: 0.886; 95% CI: 0.811–0.968). In children, lower polygenic scores for both intelligence (OR: 0.829; 95% CI: 0.777–0.884) and educational attainment (OR: 0.771; 95% CI: 0.724–0.821) were associated with greater odds of psychotic-like experiences. Our findings suggest that polygenic scores for both cognitive phenotypes and psychosis phenotypes are implicated in the relationship between psychosis and cognitive performance. Further research is needed to determine the direction of this effect and the mechanisms by which it occurs.