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Childhood-onset systemic lupus erythematosus and immune thrombocytopenia: Prevalence and risk factors

Sirinthip Kittivisuit1, Prayong Vachvanichsanong1, Edward McNeil2

  • 1Department of Pediatrics, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand.

Pediatric Blood & Cancer
|May 28, 2021
PubMed

Insights

Children diagnosed with immune thrombocytopenia (ITP) have a 2.96% risk of developing systemic lupus erythematosus (SLE). Older age at diagnosis and chronic ITP are key risk factors for developing SLE later in life.

Area of Science:

  • Pediatric Rheumatology
  • Immunology
  • Hematology

Background:

  • Limited research exists on the long-term incidence and risk factors for systemic lupus erythematosus (SLE) following childhood immune thrombocytopenia (ITP).
  • Understanding these risks is crucial for early detection and management of SLE in pediatric ITP patients.

Purpose of the Study:

  • To determine the prevalence of SLE development in children with ITP.
  • To identify clinical risk factors associated with subsequent SLE development in this cohort.

Main Methods:

  • Retrospective review of medical records for 473 children diagnosed with ITP under 15 years old.
  • Kaplan-Meier analysis to estimate cumulative SLE incidence.
  • Logistic regression to identify independent risk factors for SLE development.

Main Results:

  • The overall prevalence of subsequent SLE development was 2.96% over a mean follow-up of 6.1 years.
  • Older age at ITP diagnosis (OR: 1.24) and chronic ITP (OR: 24.67) were identified as significant independent risk factors.
  • Cumulative SLE probabilities at 5 and 10 years were 3.8% and 6.5%, respectively.

Conclusions:

  • Older age at diagnosis and chronic ITP are significant risk factors for developing SLE in children previously diagnosed with ITP.
  • These findings highlight the need for vigilant monitoring of children with ITP, particularly those with identified risk factors.
Abstract

Keywords:
immune thrombocytopeniarisk factorssystemic lupus erythematosus

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