Abstract
The purpose of this study is to explore whether a low concentration of granulocyte-macrophage colony-stimulating factor (GM-CSF) supplementation in culture medium is beneficial to infertile women aged over 35 years. A retrospective cohort study was performed to analyze the embryo quality and pregnancy outcome of 212 controlled ovarian stimulation (COH) cycles with or without GM-CSF addition (n = 117 [GM-CSF, 0.2 ng/mL] vs n = 95 [control]). No significant difference was observed in cleavage rate (96.2 vs 96.5 %), blastocyst formation rate (53.2 vs 54.0 %), good blastocyst rate (26.8 vs 26.8 %), or available embryo rate (54.2 vs 49.7 %) between the GM-CSF group and the control group. However, the average age of the GM-CSF group (38.41 ± 3.13 years) was significantly 1 year older than that of the corresponding control group (37.45 ± 2.74 years) (P < 0.05). GM-CSF addition greatly decreased the occurrence of biochemical pregnancy (55.6 % [control] vs 20.8 % [GM-CSF], P < 0.05). No case of neonatal malformation was observed in the present study. Although no benefit of GM-CSF on embryo quality was observed, the addition of this factor significantly decreased the occurrence of chemical pregnancy of women aged over 35 years, indicating the role of GM-CSF in improving implantation competence of embryos derived from elderly infertile women.
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