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Related Concept Videos

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.
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...
Pedigree Analysis01:35

Pedigree Analysis

Overview
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase01:11

Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
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...
Epistasis01:39

Epistasis

In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...

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Related Experiment Video

Updated: Jun 2, 2026

Primary Sjogren's Syndrome Associated with Lung Adenocarcinoma: Probing the Potential Common Pathogenic Mechanisms and Experimental Verification
10:21

Primary Sjogren's Syndrome Associated with Lung Adenocarcinoma: Probing the Potential Common Pathogenic Mechanisms and Experimental Verification

Published on: September 20, 2024

[Sarcoidosis and genetics].

Y Pacheco1

  • 1Service de pneumologie, centre hospitalier Lyon-Sud, 165, chemin du Grand-Revoyet, 69495 Pierre-Bénite cedex, France. yves.pacheco@chu-lyon.fr

Revue Des Maladies Respiratoires
|May 10, 2011
PubMed
Summary
This summary is machine-generated.

Genetic factors contribute to sarcoidosis susceptibility, particularly involving immune regulation genes. Research highlights complex genetic interactions and the need to explore environmental influences for a full understanding of this condition.

Related Experiment Videos

Last Updated: Jun 2, 2026

Primary Sjogren's Syndrome Associated with Lung Adenocarcinoma: Probing the Potential Common Pathogenic Mechanisms and Experimental Verification
10:21

Primary Sjogren's Syndrome Associated with Lung Adenocarcinoma: Probing the Potential Common Pathogenic Mechanisms and Experimental Verification

Published on: September 20, 2024

Area of Science:

  • Immunogenetics
  • Human Genetics
  • Disease Etiology

Background:

  • Familial clustering and twin studies suggest a genetic predisposition to sarcoidosis.
  • Immune dysregulation, particularly involving T-lymphocytes and antigen-presenting cells, is implicated in sarcoidosis pathogenesis.
  • Previous research has identified various genetic associations with sarcoidosis.

Purpose of the Study:

  • To review and synthesize current knowledge on the genetic factors associated with sarcoidosis.
  • To highlight key genetic regions and genes implicated in sarcoidosis susceptibility.
  • To discuss the complexity of sarcoidosis genetics and potential patient stratification.

Main Methods:

  • Review of genetic association studies, including human leukocyte antigen (HLA) genotyping.
  • Analysis of genome-wide linkage scans.
  • Examination of studies focusing on specific gene regions like 6p21.

Main Results:

  • The 6p21 chromosomal region, containing genes such as MHC class II, BTNL2, and TNFα, is significantly associated with sarcoidosis.
  • Genetic studies reveal the complex nature of sarcoidosis inheritance.
  • Evidence suggests the existence of distinct sarcoidosis patient subgroups.

Conclusions:

  • Sarcoidosis genetics are complex, involving multiple genes and their interactions.
  • Patient subgroup identification may help explain heterogeneity in genetic study findings.
  • Further research is needed to elucidate the interplay between genetic and environmental factors in sarcoidosis development.