Caspian Journal of Internal Medicine (Feb 2024)

Correlation between antiphospholipid antibodies and renal involvement in children with Henoch-Schönlein purpura: A cross-sectional study

  • Mehrnoush Hassas Yeganeh,
  • Reza Sinaei,
  • Aye Yaraghi,
  • Khosro Rahmani,
  • Vadood Javadi Parvaneh,
  • Reza Shiari,
  • Hamid Hosseinzadeh

Journal volume & issue
Vol. 15, no. 2
pp. 287 – 293

Abstract

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Background: Renal involvement is the most damaging long-term complication of Immunoglobulin-A (IgA) vasculitis. In the lack of a definite predictive biomarker for renal involvement, antiphospholipid antibodies (aPL) have been proposed in recent years. Methods: In this prospective cohort of 48 pediatric patients who were admitted with IgA vasculitis from September 2015 to June 2017, two serum samples were taken 12 weeks apart to detect Anti-Phospholipid antibodies. All patients were followed-up for renal involvement for six months. Results: Renal involvement occurred in 14 out of 48 patients with IgA vasculitis (29.16%). APLs were positive in nine out of 14 patients with IgA vasculitis and renal involvement (64.28%), in contrast to only six out of 34 patients with IgA vasculitis without renal involvement (17.64%). The presence of aPL antibodies was statistically associated with renal involvement (P=0.002). Although, the relationship between both sex (P=0.025) and age (P=0.046) with aPL positivity was statistically significant, performing a modified logistic regression test, the odds ratio was significant between the groups with and without renal involvement only in term of age and aPL positivity). Conclusion: The presence of aPL antibodies was statistically associated with renal involvement. We found a significant relationship between the age and aPL positivity. Hence, we need multicenter, more extensive cohort studies to reach a better and more accurate conclusion on the relationship between serum aPLs and renal involvement in IgA vasculitis patients.

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