Systemic sclerosis & Raynaud's

Pathological contributors to organ damage and mortality in systemic sclerosis: a nationwide matched case-control study

Semin Arthritis RheumPublished Matched case-control study

Authors' conclusion

This matched autopsy study demonstrates the mechanisms and complexity of organ damage in SSc, with 30-45 % of organs displaying multiple concurrent pathologies.

Study context

Population
Autopsy data from the Australian National Coronial Information System
Participants
59 vs 59
Comparison
Systemic sclerosis (SSc) cases vs age- and sex-matched controls from motor vehicle accidents
  • SScn = 59
  • Controlsn = 59reference
Outcome
Heart, lung and renal histopathology at autopsy
Methodological detailsnationwide, age- and sex-matched, autopsy data
  • Nationwide
  • Age- and sex-matched
  • Autopsy data

Main finding

As reported in the abstract

Cardiac histopathology at autopsy
SSc vs ControlsOdds ratio (95 % CI)P value
Myocardial fibrosis
11(4–29)
P < 0.01
Myocardial inflammation
39(2–672)
P = 0.01
Small vessel vasculopathy
27(2–485)
P = 0.02

Observational data: associations, not effects.

Further findings

Pulmonary fibrosis, inflammation and vasculopathy

23 to 100-times more common in SSc

Renal fibrosis/scarring, inflammation/infiltrates and vasculopathy

3-6-times more common in SSc

Combined pathologies (≥2 of fibrosis, inflammation or vasculopathy) among SSc cases

%

Hearts
31
Lungs
41
Kidneys
45

Original publication

Pathological contributors to organ damage and mortality in systemic sclerosis: a nationwide matched case-control study. Semin Arthritis Rheum. Published 29 April 2025. doi:10.1016/j.semarthrit.2025.152739

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