ReviewJournal of molecular neuroscience : MN2026
Genetic Variations in the Dopaminergic Signaling Pathways and Their Implications for Antipsychotics Pharmacogenetics.
Review in Journal of molecular neuroscience : MN, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
4 authors.
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Abstract
The role of neurotransmitter systems in the pathology and management of psychiatric disorders is well documented. Targeting these systems has remained the mainstay of standard pharmacological interventions, with typical and atypical antipsychotics demonstrating effectiveness in reducing both positive and negative symptoms of schizophrenia. However, their clinical efficacy and side effect profiles vary among individuals due to genetic differences. This review aims to examine key genetic variants in the dopaminergic neurotransmitter system that influence antipsychotic response, with particular emphasis on clinically relevant single-nucleotide polymorphisms (SNPs), to support improved treatment outcome prediction and precision psychiatry. Polymorphisms in genes encoding dopamine receptors, transporters, and metabolising enzymes have been associated with variability in antipsychotic efficacy and susceptibility to adverse effects. Across multiple studies, the catechol-O-methyltransferase (COMT) Val158Met (rs4680) polymorphism and the dopamine D2 receptor/ANKK1 Taq1A (rs1800497) variant are among the most consistently reported genetic contributors to variability in dopamine signalling, receptor availability, and drug metabolism. These variants have been linked to differential therapeutic outcomes, including improved response in some treatment-resistant patients, as well as an increased risk of extrapyramidal symptoms, hyperprolactinaemia, and metabolic disturbances. These findings indicate that genetic variation in the dopaminergic system is a key contributor to differences in antipsychotic response. Integrating pharmacogenomic information in clinical practice may enhance personalised treatment strategies, reduce trial-and-error prescribing, and improve long-term outcomes in schizophrenia.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.