With Spearman’s correlation analysis various significant positive correlations were observed in the OHSS group between the WBC count and IL-6 level (r = 0.640; p < 0.01), between the IL-6 and IL-10 levels (r = 0.677; p < 0.01), between the IL-6 and VEGF levels (r = 0.652; p < 0.01), and between the IL-10 and VEGF levels (r = 0.615; p < 0.01). This evidence concerns the gene IL6 and ovarian hyperstimulation syndrome.