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Related Concept Videos

Human Genetics01:28

Human Genetics

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...
Genetic Lingo01:11

Genetic Lingo

Overview
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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.
GWAS does not require the identification of the target gene involved in...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

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...
Incomplete Dominance01:43

Incomplete Dominance

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: Jun 19, 2026

Investigating Migraine-Like Behavior Using Light Aversion in Mice
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Investigating Migraine-Like Behavior Using Light Aversion in Mice

Published on: August 11, 2021

Genetic factors in cluster headache.

Jorine A van Vliet1, Michel D Ferrari, Joost Haan

  • 1Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands. javanvliet@lumc.nl

Expert Review of Neurotherapeutics
|October 9, 2009
PubMed
Summary

Genetic factors contribute to cluster headache but are complex to pinpoint. Research reviews family and candidate gene studies, discussing challenges in genetic research for this neurological disorder.

Area of Science:

  • Neurology
  • Genetics
  • Epidemiology

Background:

  • Cluster headache is a debilitating neurological disorder with suspected genetic underpinnings.
  • Previous genetic studies, including family and candidate gene assessments, have yielded inconclusive results.
  • Understanding the genetic architecture of cluster headache is crucial for elucidating its pathophysiology.

Purpose of the Study:

  • To review existing clinical genetic studies on cluster headache.
  • To report new findings from a large patient database.
  • To discuss the role of genetics in cluster headache and research challenges.

Main Methods:

  • Systematic review of published clinical genetic research.
  • Analysis of a comprehensive database of cluster headache patient data.

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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

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Last Updated: Jun 19, 2026

Investigating Migraine-Like Behavior Using Light Aversion in Mice
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Published on: August 11, 2021

A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

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  • Discussion of genetic research methodologies and limitations.

    • Main Results:

    • Genetic factors are implicated in cluster headache, though their specific contribution remains complex.
    • Review highlights limitations and inconsistencies in previous genetic investigations.
    • New data from a large patient cohort are presented to further elucidate genetic associations.

    Conclusions:

    • Genetic factors are important in cluster headache pathophysiology.
    • Further research is needed to overcome challenges in cluster headache genetic studies.
    • Identifying specific genetic contributors may offer novel therapeutic targets.