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Related Concept Videos

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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Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
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Updated: Feb 10, 2026

Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER
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Rare-Variant Studies to Complement Genome-Wide Association Studies.

A Sazonovs1, J C Barrett1

  • 1Wellcome Sanger Institute, Cambridge CB10 1HH, United Kingdom;

Annual Review of Genomics and Human Genetics
|May 27, 2018
PubMed
Summary
This summary is machine-generated.

Genome-wide association studies (GWASs) and DNA sequencing have transformed human genetics. This review explores how these approaches, including rare variant analysis, complement each other for disease research.

Keywords:
GWASfine mappingrare variants

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Large-Scale Multi-Omics Genome-Wide Association Studies Mo-GWAS: Guidelines for Sample Preparation and Normalization
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Area of Science:

  • Genetics
  • Genomics
  • Human Disease Genetics

Background:

  • Genome-wide association studies (GWASs) have identified numerous common variant associations with complex diseases.
  • Advances in DNA sequencing enable the analysis of rare genetic variations within populations.

Purpose of the Study:

  • To review the historical development of GWASs and DNA sequencing technologies.
  • To explore the integration of common and rare variant analyses in human disease genetics.
  • To discuss the interpretation of genetic association signals and the role of specialized study designs.

Main Methods:

  • Review of historical GWAS and sequencing literature.
  • Discussion of methodologies for understanding biological mechanisms from association signals.
  • Analysis of rare-variant study designs and their statistical challenges.

Main Results:

  • GWASs provide a foundation for understanding common variant contributions to disease.
  • Rare-variant studies offer complementary insights into genetic architecture.
  • Specialized study designs, like family and isolated population studies, enhance genetic discovery.

Conclusions:

  • Integrating GWASs and rare-variant analyses provides a comprehensive view of genetic contributions to human diseases.
  • Addressing data generation and statistical challenges is crucial for interpreting genetic findings.
  • Leveraging diverse study designs maximizes the power of genetic research.