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Related Concept Videos

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...
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

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...
Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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...
Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...

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Related Experiment Video

Updated: May 30, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Deciphering the genetic background of systemic sclerosis.

Jasper C A Broen1, Marieke J H Coenen, Timothy R D J Radstake

  • 1Department of Rheumatology, Radboud University Medical Centre, Nijmegen, The Netherlands.

Expert Review of Clinical Immunology
|July 28, 2011
PubMed
Summary

Genetic factors significantly influence systemic sclerosis (SSc) susceptibility. This review covers family studies, HLA region, and genome-wide association studies in SSc genetics research.

Related Experiment Videos

Last Updated: May 30, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Area of Science:

  • Immunogenetics
  • Rheumatology
  • Human Genetics

Background:

  • Systemic sclerosis (SSc) is a severe autoimmune connective tissue disease with increasing evidence for a genetic basis.
  • Understanding the genetic underpinnings of SSc is crucial for identifying at-risk individuals and developing targeted therapies.

Purpose of the Study:

  • To provide a comprehensive overview of the genetic factors contributing to SSc susceptibility.
  • To review key areas of SSc genetics research, including family studies, chromosomal abnormalities, HLA region involvement, candidate genes, and genome-wide association studies (GWAS).

Main Methods:

  • Literature review of genetic studies in Systemic Sclerosis.
  • Analysis of family studies, cytogenetic data, and HLA region associations.
  • Examination of candidate gene studies and genome-wide association studies (GWAS) in SSc.

Main Results:

  • Accumulating evidence strongly supports a significant genetic component in SSc susceptibility.
  • The Human Leukocyte Antigen (HLA) region and various other candidate genes have been implicated in SSc pathogenesis.
  • Genome-wide association studies (GWAS) have identified novel genetic loci associated with SSc risk.

Conclusions:

  • Genetics plays a pivotal role in the susceptibility to Systemic Sclerosis.
  • Further genetic research in SSc is essential for advancing our understanding of disease mechanisms and improving patient outcomes.