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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

683
Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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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.
GWAS does not require the identification of the target gene involved in...
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Related Experiment Video

Updated: Sep 18, 2025

Genome-wide Analysis of HDAC Inhibitor-mediated Modulation of microRNAs and mRNAs in B Cells Induced to Undergo Class-switch DNA Recombination and Plasma Cell Differentiation
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Autoimmune diseases and diffuse large B-cell lymphoma: A Mendelian randomization study.

Jiaying Duan1, Litian Ma2, Tianhao Wang3

  • 1Department of Oncology, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang Province, China.

Medicine
|June 23, 2025
PubMed
Summary

This study used Mendelian randomization to investigate the causal links between autoimmune diseases (ADs) and diffuse large B-cell lymphoma (DLBCL). Several ADs, including Sjögren syndrome and systemic lupus erythematosus, show a potential causal relationship with DLBCL risk.

Keywords:
Mendelian randomizationautoimmune diseasesdiffuse large B-cell lymphomagenome-wide association study

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Area of Science:

  • Immunology
  • Oncology
  • Genetics

Background:

  • The relationship between autoimmune diseases (ADs) and diffuse large B-cell lymphoma (DLBCL) requires further clarification.
  • Investigating potential causal links is crucial for understanding disease pathogenesis and developing targeted therapies.

Purpose of the Study:

  • To assess the causal effects of various autoimmune diseases on the risk of developing diffuse large B-cell lymphoma using a robust Mendelian randomization approach.

Main Methods:

  • Utilized Mendelian randomization (MR) analysis with summary statistics from genome-wide association studies (GWAS) for ADs and DLBCL.
  • Selected single nucleotide polymorphisms (SNPs) as genetic instrumental variables, applying stringent criteria for linkage disequilibrium and excluding palindromic/outlier SNPs.
  • Employed sensitivity analyses including Cochran Q test, MR-Egger intercept, MR-PRESSO, and leave-one-out analysis to ensure result validity.

Main Results:

  • Genetic liability to mixed connective tissue disease, Sjögren syndrome, systemic lupus erythematosus, and ulcerative colitis was associated with an increased risk of DLBCL.
  • Psoriasis and type 1 diabetes mellitus showed a potential inverse relationship with DLBCL risk, suggesting a reduced likelihood.
  • Sensitivity analyses supported the robustness of the observed associations, confirming potential causal links for specific ADs.

Conclusions:

  • Findings suggest that certain autoimmune diseases, such as Sjögren syndrome and systemic lupus erythematosus, may causally increase DLBCL risk.
  • Conversely, type 1 diabetes mellitus might confer a protective effect against DLBCL development.
  • These insights highlight the complex interplay between autoimmunity and lymphomagenesis, warranting further investigation.