Evidence map›Paper›PMID 29463519›Full record

ArticleAnnals of the rheumatic diseases2018

Effect of pregnancy on disease flares in patients with systemic lupus erythematosus.

Amanda M Eudy, Anna Maria Siega-Riz, Stephanie M Engel, Nora Franceschini, Annie Green Howard, Megan E B Clowse, Michelle Petri

Open access · greenAbstract read
In one paragraph

Article in Annals of the rheumatic diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 6 pooled it
15.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

76 citing papers in PubMed, 6 syntheses or guidelines pooled it, 138 citations in OpenAlex.

  1. Pooled it
  2. Systemic Lupus Erythematosus in Pregnancy.Medical sciences (Basel, Switzerland) · 2025
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16 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 1 country.

Amanda M EudyDepartment of Epidemiology, University of North Carolina at Chapel Hill Gillings School of Global Public Health, Chapel Hill, North Carolina, USA.
Anna Maria Siega-RizSchool of Nursing, University of Virginia, Charlottesville, Virginia, USA.
Stephanie M EngelDepartment of Epidemiology, University of North Carolina at Chapel Hill Gillings School of Global Public Health, Chapel Hill, North Carolina, USA.
Nora FranceschiniDepartment of Epidemiology, University of North Carolina at Chapel Hill Gillings School of Global Public Health, Chapel Hill, North Carolina, USA.
Annie Green HowardDepartment of Biostatistics, University of North Carolina at Chapel Hill Gillings School of Global Public Health, North Carolina, USA.
Megan E B ClowseDepartment of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
Michelle PetriDepartment of Rheumatology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
University of North Carolina at Chapel Hill · USDuke Medical Center · USDuke University Hospital · USJohns Hopkins Medicine · USUniversity of Virginia · US

Funding

Lupus CohortR01AR043727 · NIAMS · JOHNS HOPKINS UNIVERSITY · PI PETRI, MICHELLE A · 1997 to 2015
$8.2M
Hopkins Lupus CohortR01AR069572 · NIAMS · JOHNS HOPKINS UNIVERSITY · PI PETRI, MICHELLE A · 2016 to 2020
$3.4M
NIAMS NIH HHS R01 AR043727NIAMS NIH HHS R01 AR069572
6 · The paper itself

Abstract

objectivePrior studies found conflicting results about whether lupus is likely to flare during or after pregnancy. Using a large cohort of pregnant and non-pregnant women with lupus, we estimated the effect of pregnancy on disease flares in systemic lupus erythematosus.

methodsData were collected in the Hopkins Lupus Cohort 1987-2015. Women aged 14-45 years with >1 measurement of disease activity were included. The time-varying exposures were classified as pregnancy, postpartum or non-pregnant/non-postpartum periods. Flares were defined as: (1) change in Physician Global Assessment (PGA)≥1 from previous visit and (2) change in Safety of Estrogens in Lupus National Assessment-Systemic Lupus Erythematosus Disease Activity Index (SELENA-SLEDAI)≥4 from previous visit. A stratified Cox model estimated HRs with bootstrap 95% CIs.

resultsThere were 1349 patients, including 398 pregnancies in 304 patients. There was an increased rate of flare defined by PGA during pregnancy (HR: 1.59; 95% CI 1.27 to 1.96); however, this effect was modified by hydroxychloroquine (HCQ) use, with the HR of flares in pregnancy compared with non-pregnant/non-postpartum periods estimated to be 1.83 (95% CI 1.34 to 2.45) for patients with no HCQ use and 1.26 (95% CI 0.88 to 1.69) for patients with HCQ use. The risk of flare was similarly elevated among non-HCQ users in the 3 months postpartum, but not for women taking HCQ after delivery.

conclusionsOur study supports and extends previous findings that the incidence of flare is increased during pregnancy and within the 3 months postpartum. Continuing HCQ, however, appeared to mitigate the risk of flare during and after pregnancy.

Indexed as

AdolescentAdultAntirheumatic AgentsCohort StudiesFemaleHumansHydroxychloroquineLupus Erythematosus, SystemicMarylandMiddle AgedPostpartum PeriodPregnancyPregnancy ComplicationsPregnancy OutcomeSeverity of Illness IndexYoung AdultAntirheumatic AgentsHydroxychloroquinedisease activityepidemiologysystemic lupus erythematosus

Identifiers

PMID29463519
PMCPMC6037310
OpenAlexW2788701488

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.