NOS3 and juvenile idiopathic arthritis: Within the patient population, those carrying the rs1799983 GT/TT genotypes had higher body mass index, whereas those with the VNTR 4b/4b genotype had lower sedimentation rate.<h4>Conclusion</h4>Our study results suggest that the eNOS rs1799983 and variable number tandem repeat variants may play a role in juvenile idiopathic arthritis patients' clinical findings.