IV albumin, compared with placebo, has no significantly different effect in preventing OHSS (RR 0.57, 95% CI 0.25–1.05, p < 0.05), yet in terms of reducing the pregnancy rate, it is statistically significant(RR 0.85, 95% CI 0.74–0.97, p < 0.05). The gene discussed is ALB; the disease is ovarian hyperstimulation syndrome.