The expression levels of Adenosine triphosphatase 6 ( ATPase 6 ) , Bone morphogenetic protein 15 ( BMP15 ) , and Neuronal apoptosis inhibitory protein ( NAIP ) genes were significantly upregulated in the GnRH-ant group compared to the GnRH-a group , with the fold change of 3.990 ( SD 1.325 ) , 6.274 ( SD 1.542 ) , and 2.156 ( SD 1.443 ) , respectively , ( P < 0.001 ) .