Journal Article DZNE-2024-00517

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Association of polygenic score and the involvement of cholinergic and glutamatergic pathways with lithium treatment response in patients with bipolar disorder.

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2023
Macmillan London

Molecular psychiatry 28(12), 5251 - 5261 () [10.1038/s41380-023-02149-1]

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Abstract: Lithium is regarded as the first-line treatment for bipolar disorder (BD), a severe and disabling mental health disorder that affects about 1% of the population worldwide. Nevertheless, lithium is not consistently effective, with only 30% of patients showing a favorable response to treatment. To provide personalized treatment options for bipolar patients, it is essential to identify prediction biomarkers such as polygenic scores. In this study, we developed a polygenic score for lithium treatment response (Li+PGS) in patients with BD. To gain further insights into lithium's possible molecular mechanism of action, we performed a genome-wide gene-based analysis. Using polygenic score modeling, via methods incorporating Bayesian regression and continuous shrinkage priors, Li+PGS was developed in the International Consortium of Lithium Genetics cohort (ConLi+Gen: N = 2367) and replicated in the combined PsyCourse (N = 89) and BipoLife (N = 102) studies. The associations of Li+PGS and lithium treatment response - defined in a continuous ALDA scale and a categorical outcome (good response vs. poor response) were tested using regression models, each adjusted for the covariates: age, sex, and the first four genetic principal components. Statistical significance was determined at P < 0.05. Li+PGS was positively associated with lithium treatment response in the ConLi+Gen cohort, in both the categorical (P = 9.8 × 10-12, R2 = 1.9%) and continuous (P = 6.4 × 10-9, R2 = 2.6%) outcomes. Compared to bipolar patients in the 1st decile of the risk distribution, individuals in the 10th decile had 3.47-fold (95%CI: 2.22-5.47) higher odds of responding favorably to lithium. The results were replicated in the independent cohorts for the categorical treatment outcome (P = 3.9 × 10-4, R2 = 0.9%), but not for the continuous outcome (P = 0.13). Gene-based analyses revealed 36 candidate genes that are enriched in biological pathways controlled by glutamate and acetylcholine. Li+PGS may be useful in the development of pharmacogenomic testing strategies by enabling a classification of bipolar patients according to their response to treatment.

Keyword(s): Bipolar Disorder: drug therapy (MeSH) ; Bipolar Disorder: genetics (MeSH) ; Humans (MeSH) ; Female (MeSH) ; Male (MeSH) ; Multifactorial Inheritance: genetics (MeSH) ; Adult (MeSH) ; Middle Aged (MeSH) ; Lithium: therapeutic use (MeSH) ; Lithium: pharmacology (MeSH) ; Treatment Outcome (MeSH) ; Bayes Theorem (MeSH) ; Genome-Wide Association Study: methods (MeSH) ; Glutamic Acid: metabolism (MeSH) ; Cohort Studies (MeSH) ; Lithium Compounds: therapeutic use (MeSH) ; Lithium Compounds: pharmacology (MeSH) ; Acetylcholine: metabolism (MeSH) ; Polymorphism, Single Nucleotide: genetics (MeSH) ; Antimanic Agents: therapeutic use (MeSH) ; Antimanic Agents: pharmacology (MeSH) ; Lithium ; Glutamic Acid ; Lithium Compounds ; Acetylcholine ; Antimanic Agents

Classification:

Contributing Institute(s):
  1. Molecular biomarkers for predictive diagnostics of neurodegenerative diseases (AG Wiltfang)
  2. Epigenetics and Systems Medicine in Neurodegenerative Diseases (AG Fischer)
Research Program(s):
  1. 353 - Clinical and Health Care Research (POF4-353) (POF4-353)
  2. 352 - Disease Mechanisms (POF4-352) (POF4-352)

Appears in the scientific report 2023
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Medline ; Creative Commons Attribution CC BY 4.0 ; OpenAccess ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; DEAL Springer ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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Document types > Articles > Journal Article
Institute Collections > GÖ DZNE > GÖ DZNE-AG Wiltfang
Institute Collections > GÖ DZNE > GÖ DZNE-AG Fischer
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 Record created 2024-04-29, last modified 2026-02-12