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Contribution of Telomere Length to Systemic Sclerosis Onset: A Mendelian Randomization Study.

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Longer telomere length in leukocytes (LTL) is associated with a reduced risk of systemic sclerosis (SSc). This Mendelian randomization study suggests LTL influences SSc development, highlighting key genetic variants.

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Area of Science:

  • Genetics
  • Immunology
  • Rheumatology

Background:

  • Previous studies suggest a link between telomere shortening and systemic sclerosis (SSc).
  • The causal relationship between leukocyte telomere length (LTL) and SSc requires further elucidation.

Purpose of the Study:

  • To investigate the potential causal relationship between LTL and SSc.
  • To utilize Mendelian randomization with genome-wide association study data for LTL and SSc.

Main Methods:

  • Two-sample Mendelian randomization approach.
  • Analysis of genome-wide association study data for LTL and SSc.
  • Inverse-variance weighted regression and Mendelian randomization pleiotropy residual sum and outlier methods were employed.

Main Results:

  • A significant association was found between LTL and SSc (OR = 0.716, p = 0.031).
  • Longer genetically predicted LTL demonstrated a reduced risk of SSc.
  • Sensitivity analyses identified rs10936599 (TERC) and rs2736100 (TERT) as significant variants.

Conclusions:

  • Leukocyte telomere length appears to influence the development of systemic sclerosis.
  • The findings support a role for telomere biology in SSc pathogenesis.