<p>​​Pediatric idiopathic nephrotic syndrome (INS) includes steroid-sensitive (SSNS) and steroid-resistant (SRNS) forms, which differ in treatment response and prognosis. We constructed a polygenic risk score (PRS) using summary statistics from the largest pediatric SSNS GWAS meta-analysis (2,440 cases and 36,023 controls) and evaluated it in an independent Chinese cohort of 2,507 controls, 123 SRNS patients, and 493 SSNS patients. ANOVA showed significant between-group differences (F (2, 3120) = 59.42, <i>P</i> &lt; 2 × 10⁻¹⁶). Post-hoc tests revealed higher PRS in SSNS than controls (<i>P</i> &lt; 0.001), with SRNS intermediate but still elevated compared to controls (<i>P</i> = 0.021) and lower than SSNS (<i>P</i> = 0.001). The elevation of SSNS-derived PRS in SRNS suggests shared polygenic susceptibility between these clinically distinct forms of INS, indicating that overlapping common variants may converge on similar biological pathways and supporting the potential utility of PRS in genetic risk stratification and guiding precision management.</p>

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Polygenic risk score from steroid-sensitive nephrotic syndrome GWAS indicates overlapping genetic basis with steroid-resistant cases

  • Cong Wang,
  • Guotao Yin,
  • Yidi Zhou,
  • Yingchao Song,
  • Minle Tian,
  • Xiaoyuan Wang,
  • Jing Wang,
  • Qian Li,
  • Ruixian Zang,
  • Zhenle Yang,
  • Lichun Yu,
  • Suwen Liu,
  • Li Wang,
  • Xiujun Yao,
  • Aihua Zhou,
  • Xiao Chang,
  • Shuzhen Sun

摘要

​​Pediatric idiopathic nephrotic syndrome (INS) includes steroid-sensitive (SSNS) and steroid-resistant (SRNS) forms, which differ in treatment response and prognosis. We constructed a polygenic risk score (PRS) using summary statistics from the largest pediatric SSNS GWAS meta-analysis (2,440 cases and 36,023 controls) and evaluated it in an independent Chinese cohort of 2,507 controls, 123 SRNS patients, and 493 SSNS patients. ANOVA showed significant between-group differences (F (2, 3120) = 59.42, P < 2 × 10⁻¹⁶). Post-hoc tests revealed higher PRS in SSNS than controls (P < 0.001), with SRNS intermediate but still elevated compared to controls (P = 0.021) and lower than SSNS (P = 0.001). The elevation of SSNS-derived PRS in SRNS suggests shared polygenic susceptibility between these clinically distinct forms of INS, indicating that overlapping common variants may converge on similar biological pathways and supporting the potential utility of PRS in genetic risk stratification and guiding precision management.