BACKGROUND A normal chromosomal constitution defined through PGT-A assessing all
chromosomes on trophectoderm (TE) biopsies represents the strongest predictor of embryo …

Despite the worldwide increase in frozen embryo transfer, the search for the best protocol to
prime endometrium continues. Well-designed trials comparing various frozen embryo …

Oocyte in vitro maturation (IVM) is an assisted reproductive technology designed to obtain
mature oocytes following culture of immature cumulus–oocyte complexes collected from …

Objective To investigate the association between luteal serum progesterone levels and
frozen embryo transfer (FET) outcomes. Design Systematic review and meta-analysis …

Objective To analyze the impact on live birth rates (LBRs) of the individualized luteal phase
support (termed iLPS) in patients with low serum progesterone (P) levels compared with …

Progesterone is the ovarian steroid produced by the granulosa cells of follicles after the LH
peak at mid-cycle. Its role is to sustain embryo endometrial implantation and ongoing …

STUDY QUESTION Is there a relationship between serum and endometrial progesterone
(P4) levels, including P4 and metabolites (oestrone, oestradiol and 17α …

Purpose This systematic review and meta-analysis aimed to compare the short-term
reproductive and long-term obstetric outcomes after endometrial preparations by ovarian …

Importance To date, recurrent implantation failure (RIF) has no clear definition and no clearly
identified impaired function. Hence, the term RIF is currently used somewhat haphazardly …

Over the past decade, the application of frozen-thawed embryo transfer treatment cycles has
increased substantially. Hormone replacement therapy and the natural cycle are two …