432
Participants
Start Date
July 20, 2025
Primary Completion Date
May 31, 2027
Study Completion Date
December 31, 2027
GnRH-a-1M
Pre-treatment with one dose GnRH agonist before endometrial preparation.
GnRH-a-2M
Pre-treatment with two doses GnRH agonist before endometrial preparation.
GnRH-a+LE-1M
Pre-treatment with one dose GnRH agonist, along with daily 2.5 mg letrozole for 28 days before endometrial preparation.
GnRH-a+LE-2M
Pre-treatment with two doses GnRH agonist, along with daily 2.5 mg letrozole for 28 days since the first injection of GnRH agonist before endometrial preparation.
Reproductive Medical Center, the First Af liated Hospital of Sun Yat-sen University, Zhongshan 2nd Road, Number 1, Guangzhou
Women and Children's Hospital of Fujian Province
UNKNOWN
BoAi Hospital of Zhongshan
OTHER
First Affiliated Hospital, Sun Yat-Sen University
OTHER