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Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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Genetic Interactions Affect Lung Function in Patients with Systemic Sclerosis.

Anna Tyler1, J Matthew Mahoney2,3, Gregory W Carter4

  • 1The Jackson Laboratory, 600 Main St. Bar Harbor, ME.

G3 (Bethesda, Md.)
|November 8, 2019
PubMed
Summary
This summary is machine-generated.

Researchers identified interacting genes (WNT5A, RBMS3, MSI2) influencing lung disease in scleroderma (SSc) patients. This discovery aids understanding of SSc-associated lung pathology and potential targeted treatments.

Keywords:
EpistasisSclerodermaSystemic SclerosisWnt Signaling

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Area of Science:

  • Genetics
  • Immunology
  • Pulmonology

Background:

  • Scleroderma (SSc) is an autoimmune disease causing fibrosis, with lung disease being a major cause of mortality.
  • The exact mechanisms driving lung disease in SSc are not fully understood, hindering targeted treatment development.
  • Identifying genetic interactions is crucial for understanding complex disease pathology.

Purpose of the Study:

  • To increase the power of genome-wide association studies (GWAS) for detecting genetic interactions (epistasis) in human cohorts.
  • To identify specific genetic interactions influencing lung function and autoantibody status in SSc patients.

Main Methods:

  • Utilized Matrix Epistasis to filter single nucleotide polymorphisms (SNPs).
  • Applied the Combined Analysis of Pleiotropy and Epistasis (CAPE) method.
  • Analyzed a cohort of 416 SSc patients for genetic interactions affecting lung outcomes.

Main Results:

  • Identified a novel, high-confidence three-gene network (WNT5A, RBMS3, MSI2) significantly associated with lung function in SSc.
  • This gene network collectively influenced multiple measures of pulmonary pathology.
  • Gene coexpression analysis indicated these interactions are specific to lung tissue.

Conclusions:

  • The identified WNT5A, RBMS3, and MSI2 gene network provides new insights into SSc-associated lung disease pathogenesis.
  • These findings highlight the importance of studying gene-gene interactions for understanding complex diseases.
  • The tissue-specific nature of these interactions may help differentiate lung-specific SSc pathology from skin fibrosis.