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Related Concept Videos

Human Genetics01:28

Human Genetics

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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.
The complex relationship between genetics and psychology is observable through common biological components such...
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Pharmacogenomics: Identification of New Drug Targets01:29

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Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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Principles of Pharmacogenetics: Types of Genetic Variants01:27

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The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
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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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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Pharmacogenetics and Pharmacogenomics: Overview01:29

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Pharmacogenetics and pharmacogenomics examine how genetic factors influence an individual's response to drugs. While pharmacogenetics focuses on the impact of specific genetic variants on drug effects, pharmacogenomics takes a broader approach, studying how genetic variation across populations contributes to differences in drug responses. These fields aim to explain why individuals may experience varying levels of efficacy or adverse reactions to the same medication.Variability in drug...
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Related Experiment Video

Updated: Feb 21, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
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Advancing psychiatric genetics through dissecting heterogeneity.

Karen Hodgson1,2, Peter McGuffin1, Cathryn M Lewis1,2,3

  • 1MRC Centre for Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, SE5 8AF, London, UK.

Human Molecular Genetics
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Summary

Recent advances in psychiatric genetics utilize large sample sizes to identify genomic loci for disorders. This review explores methods to dissect heterogeneity in phenotype, genetic variation, and ancestry for a clearer understanding of genetic influences.

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Area of Science:

  • Psychiatric Genetics
  • Genomics
  • Bioinformatics

Background:

  • Substantial progress in psychiatric genetics has been achieved through large-scale case/control studies.
  • Identification of replicated trait-associated genomic loci marks a significant advancement.
  • Understanding the biological processes underlying psychiatric disorders remains a challenge.

Purpose of the Study:

  • To provide an overview of recent approaches used to dissect heterogeneity in psychiatric genetics.
  • To highlight current directions in the field for identifying genotypic influences on disorders.
  • To examine strategies for addressing heterogeneity across diagnoses, genetic variations, and ancestries.

Main Methods:

  • Review of recent literature on psychiatric genetics.
  • Categorization of approaches into phenotype, genetic variation, and ancestry heterogeneity.
  • Analysis of methods for dissecting complex genetic influences on psychiatric disorders.

Main Results:

  • The field is moving towards more fine-grained approaches to address heterogeneity.
  • Key areas of focus include phenotypic, genetic, and ancestral heterogeneity.
  • These approaches aim to overcome limitations in identifying genotypic influences.

Conclusions:

  • Dissecting heterogeneity is crucial for advancing psychiatric genetics.
  • Future research will likely focus on integrated approaches to understand complex genetic architectures.
  • These strategies promise to enhance the identification of genetic factors in psychiatric disorders.