Progesterone Primed Endometrial Protocol Versus Gonadotropin-releasing Hormone Antagonist Protocol in Assisted Reproductive Treatments

The cases were received soft progesterone capsules (brand name: Utrogestan, 100 mg, Laboratories Besins International, France) 100 mg and 150 IU of human menopausal gonadotropin (hMG) concomitantly from the menstrual cycle (MC) day 3 until the trigger day.

The cases were received the gonadotropin-releasing hormone antagonist (GnRH-ant) protocol consisting of HMG 150 IU's daily injection from MC 3 until the trigger day. GnRH-ant (Cetrotide, 0.25 mg, MerckSerono) was started when at least one of the following criteria were met: LH \>10 IU/L, the presence of at least one follicle with mean diameter \>14 mm, or serum E2 level \>600 pg/mL.