Lifeng Tian

BACKGROUND: The effectiveness of luteinizing hormone (LH) supplementation during assisted reproductive technology (ART) cycles remains controversial, particularly among women of advanced reproductive age. This study aimed to compare the cum…

BACKGROUND: The administration of exogenous gonadotropins (Gn) to elicit multi-follicular development for controlled ovarian stimulation (COS) represents a pivotal component of assisted reproductive technology (ART). Presently, the exogenou…

BACKGROUND: Overweight and obesity are link to impaired endometrial receptivity and decreased pregnancy success in frozen-thawed embryo transfer (FET) cycles. Depot gonadotropin-releasing hormone agonist (GnRH-a) pretreatment before hormone…

BACKGROUND: Diminished ovarian reserve (DOR) is clinically characterized by a decrease in the number of available ovarian follicles and a decline in the quality of oocytes, accompanied by hormonal changes. Low quality of DOR oocyte leads to…

BACKGROUND: Prior research showed that elevated serum uric acid (SUA) levels in women with polycystic ovary syndrome (PCOS) before in vitro fertilization or intracytoplasmic sperm injection (IVF/ICSI) treatment can lead to a lower rate of l…

BACKGROUND: The cumulative live birth rate (CLBR) has been regarded as a key measure of in vitro fertilization (IVF) success after a complete treatment cycle. Women undergoing IVF face great psychological pressure and financial burden. A pr…

OBJECTIVE: To investigate the effect of inactivated coronavirus disease 2019 (COVID-19) vaccination on frozen-thawed embryo transfer (FET) outcomes. METHODS: This retrospective cohort study enrolled 1,210 patients undergoing FET cycles in …

PURPOSE: To explore the impact of inactivated COVID-19 vaccination on ovarian reserve as assessed by serum anti-Müllerian hormone (AMH) concentration. METHODS: A total of 3160 women were included in this single-center retrospective cohort …

OBJECTIVE: To evaluate the efficacy of the long-acting gonadotropin-releasing hormone agonist (GnRH-a) administration before hormone replacement treatment for frozen-thawed embryo transfer in women with different times of embryo implantatio…

BACKGROUND: Unsubstantiated concerns have been raised on the potential correlation between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination and infertility, leading to vaccine hesitancy in reproductive-aged populatio…

PURPOSE: To study the relationship between blastomere number and pregnancy outcomes of day 3 embryo transfers. METHODS: This retrospective cohort study included 2237 fresh single day 3 embryo transfer cycles from October 2013 to November 2…

PURPOSE: To investigate the impact of inactivated SARS-CoV-2 vaccination on in vitro fertilization (IVF) outcomes. PATIENTS AND METHODS: This retrospective cohort study included 2185 patients undergoing fresh IVF cycles from June 1st to Se…

BACKGROUND: This large-cohort, retrospective study investigates the relationship between the number of oocytes retrieved and the clinical outcomes for patients receiving the GnRH-a prolonged protocol (mGnRH-a protocol) for fertilization in …

Polycystic ovary syndrome (PCOS) affects 8-13% of reproductive-age females worldwide and mutations or aberrant expression of androgen receptor (AR) may cause the onset of this disease. In the present study, 258 samples from Han Chinese pati…

BACKGROUND: The mechanism of recurrent implantation failure (RIF) is unclear at present and poor endometrial receptivity may be one of the leading reasons. This study aims to construct a competing endogenous RNA (ceRNA) network and identify…

PURPOSE: To evaluate the association of endometrial thickness (EMT) with obstetric and neonatal outcomes in women with polycystic ovary syndrome (PCOS). METHODS: A total of 1755 subfertile PCOS women with singleton livebirths after frozen-…