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Related Concept Videos

Obsessive-Compulsive Disorder01:28

Obsessive-Compulsive Disorder

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Obsessive-compulsive disorder (OCD) is a mental health condition characterized by recurrent obsessions, compulsions, or both, which consume significant time and interfere with daily functioning. Obsessions involve persistent, intrusive, and unwanted thoughts, images, or urges that evoke anxiety. Common examples include irrational fears of contamination or harm. Compulsions are repetitive behaviors or mental acts performed to reduce the anxiety caused by obsessions. For instance, individuals...
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Human Genetics01:28

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Behavioral Genetics and Its Designs01:23

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Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
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Personality Disorders: Dependent and Obsessive-Compulsive01:24

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Dependent personality disorder and obsessive-compulsive personality disorder are two separate psychological conditions that influence behavior, relationships, and overall life functioning. Though both involve maladaptive behaviors, their core characteristics and motivations differ significantly.
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Incomplete Dominance01:43

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Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Related Experiment Video

Updated: Nov 15, 2025

Signal Attenuation as a Rat Model of Obsessive Compulsive Disorder
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Cutting-edge genetics in obsessive-compulsive disorder.

Leonardo Cardoso Saraiva1, Carolina Cappi1, Helen Blair Simpson2,3

  • 1Department & Institute of Psychiatry, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.

Faculty Reviews
|March 4, 2021
PubMed
Summary
This summary is machine-generated.

Recent genetic research reveals obsessive-compulsive disorder (OCD) has a complex genetic architecture, shared with other neuropsychiatric disorders. Understanding these genetic networks is key to developing new diagnostic and therapeutic strategies for OCD.

Keywords:
geneticsgenomicsobsessive-compulsive disorder

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Area of Science:

  • Neuroscience
  • Genetics
  • Psychiatry

Background:

  • Obsessive-compulsive disorder (OCD) is a debilitating neuropsychiatric condition with a complex and incompletely understood genetic basis.
  • Previous research has identified potential genetic factors, but a comprehensive overview of recent advances is needed.

Purpose of the Study:

  • To review and synthesize recent findings in the genetics of obsessive-compulsive disorder (OCD).
  • To highlight the complexity of OCD's genetic architecture and its overlap with other neuropsychiatric disorders.

Main Methods:

  • Review of studies including genome-wide association studies (GWAS), whole-exome sequencing, copy number variation analysis, and gene expression studies.
  • Inclusion of research on polygenic risk scores, gene-environment interactions, animal models, cell models, imaging genetics, pharmacogenetics, and endophenotypes.

Main Results:

  • The genetic architecture of OCD is highly complex and shares commonalities with other neuropsychiatric disorders.
  • Evidence implicates gene networks involved in synaptic transmission, neurodevelopment, and immune/inflammatory systems in OCD pathogenesis.
  • OCD is not a homogeneous entity; underlying biological pathways are variable and heterogeneous.

Conclusions:

  • Further elucidation of OCD's genetic architecture is crucial for developing biologically-informed diagnostic and therapeutic approaches.
  • Translational research efforts are expected to significantly advance the understanding and treatment of OCD.