Systemic sclerosis & Raynaud's

Pulmonary arterial hypertension susceptibility and mortality among patients with systemic sclerosis with the DNASE1L3 rs35677470 (Arg206Cys) variant

Ann Rheum DisPublished Multicohort genetic association study with meta-analysis

Pooled result · MortalityResult — go to the resultHazard ratio 1.16 95% CI 1.02–1.32

Authors' conclusion

We report a previously unknown impact of DNASE1L3 polymorphism on PAH susceptibility in SSc.

Study context

Population
Patients with Systemic Sclerosis (SSc) in the UTHealth Houston, Royal Free Hospital and Johns Hopkins University cohortsmortality analysis
Participants
2,366 patients
Comparison
SSc with vs without the DNASE1L3 R206C variant
Outcome
Mortality and pulmonary outcomes (precapillary PH time-to-event from SSc onset)
Methodological detailsthree cohorts (UTHealth Houston, Royal Free Hospital, Johns Hopkins University), Cox proportional hazards models
  • Three cohorts (UTHealth Houston, Royal Free Hospital, Johns Hopkins University)
  • Cox proportional hazards models

Pooled result

Mortality

Hazard ratio

1.16

95% CI 1.02–1.32

DNASE1L3 R206Cvs Without R206C
HR 1.16 (95% CI 1.02–1.32)

As reported in the abstract

Further pooled results

OutcomeHR (95% CI)
Precapillary PH riskAdjusted for age of SSc onset, sex and presence of ILD1.69 (1.31–2.19)
  • Precapillary pulmonary hypertension (PH) risk: n = 1170; 20.3% had precapillary PH

Precapillary PH risk

The majority of patients with precapillary PH did not have interstitial lung disease (ILD) (WHO Group I, ie pulmonary arterial hypertension (PAH))

Original publication

Pulmonary arterial hypertension susceptibility and mortality among patients with systemic sclerosis with the DNASE1L3 rs35677470 (Arg206Cys) variant. Ann Rheum Dis. Published 5 June 2026. doi:10.1016/j.ard.2026.05.009

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