Systemic sclerosis & Raynaud's

Pregnancy Outcomes in Women With Systemic Sclerosis Before and/or After Diagnosis and by Parity: A Swedish Population‐Based Cohort Study

Arthritis RheumatolPublished Population-based cohort study

Authors' conclusion

Contemporary women with SSc displayed markedly increased risks of several APOs after SSc diagnosis; the risks of some APOs were already increased before diagnosis, particularly within three years.

Study context

Population
Pregnancies with births in women with systemic sclerosis (SSc) and general-population comparator women, Swedish Medical Birth Register, 1998–2021pregnancies
Exposure
Pregnancies in women with SSc (after or before diagnosis) vs comparator women from the general population
  • Post-SScn = 94
  • Pre-SScn = 39
  • Pre-SScn = 839
Outcome
Adverse pregnancy outcomes (APOs)
Methodological detailsnationwide, Swedish Medical Birth Register, regression models
  • Nationwide
  • Swedish Medical Birth Register
  • Regression models

Main finding

As reported in the abstract

APOs in post-SSc pregnancies
Estimate (95% CI)
Post-SScvs Comparator
RR (preeclampsia) 3.8(1.8–7.8)
Post-SScvs Comparator
RR (preterm birth) 3.3(1.8–6.1)
Post-SScvs Comparator
RR (cesarean delivery) 2.5(1.8–3.5)

Observational data: associations, not effects.

Further findings

OutcomeEstimate
APOs in primiparous post-SSc women (subgroup)Post-SScvs ComparatorPrimiparousRR (preeclampsia) 7.5 (95% CI 3.5–16.1)
APOs in primiparous post-SSc women (subgroup)Post-SScvs ComparatorPrimiparousRR (preterm birth) 5.1 (95% CI 2.5–10.5)

Adverse pregnancy outcomes (APOs) in pre-SSc pregnancies

Increased odds of APOs in pre-SSc pregnancies, with the highest estimates in the zero to three years' pre-SSc pregnancies

Original publication

Pregnancy Outcomes in Women With Systemic Sclerosis Before and/or After Diagnosis and by Parity: A Swedish Population‐Based Cohort Study. Arthritis Rheumatol. Published 22 October 2025. doi:10.1002/art.43312

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