FSH-FREE VERSUS FSH-PRIMED INFERTILITY TREATMENT OF WOMEN WITH POLYCYSTIC OVARY SYNDROME USING BIPHASIC IN VITRO MATURATION: A RANDOMIZED CLINICAL TRIAL

AMSTERDAM, July 11 (Bernama) -- This randomized, controlled trial was conducted at a tertiary IVF center, Ho Chi Minh City, Vietnam. Between January 2023 and June 2023, 120 women were randomized. Eligible women were aged 18–37 years with polycystic ovarian syndrome (PCOS). After providing written informed consent, participants were randomized (1:1) to undergo CAPA-IVM with or without FSH-priming. Participants in the FSH-priming group received two days of recombinant FSH (rFSH) injections before oocyte pick-up; no rFSH was given in the non-FSH group. All retrieved cumulus oocyte complexes underwent biphasic in vitro maturation (CAPA-IVM). Matured oocytes underwent fertilization through ICSI procedure, and were cultured to blastocyst stage followed by vitrification. Participants underwent a single blastocyst transfer during a frozen replacement cycle. The primary endpoint was the number of matured oocytes.

The number of matured oocytes after CAPA-IVM did not differ significantly between the non-FSH and FSH groups (13 [9; 18] vs. 14 [7; 18]; absolute difference –1 [95% confidence interval –5, 4]). There were also no significant between-group differences in other oocyte and embryology outcomes, including the number of cumulus-oocyte complexes, number of fertilized oocytes, total number of blastocysts and good blastocysts, and total number of frozen embryos. The live birth rate was 38.3% in the non-FSH group and 31.7% in the FSH group, with no statistically significant difference. The miscarriage rate at < 12 weeks’ gestation was 5.0% in both groups. Maternal complications were infrequent and occurred at a similar rate in the non-FSH and FSH groups; there were no preterm deliveries before 32 weeks’ gestation.