Lack of correlation between hormonal blood levels and endometrial maturation in agonadal women with repeat implantation failure following embryo transfer from donated eggs

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Abstract
Five women with ovarian failure who repeatedly failed to conceive following embryo transfer from donated eggs underwent endometrial development investigation. One endometrial biopsy was obtained on cycle days 19, 21, and 23 during three consecutive artificially induced cycles. All five patients had only early secretory changes on days 19 and 21. Histological evaluation on cycle day 23 revealed various developmental stages: two women had “in-phase” endometrium, two patients had adequately developed stroma but significantly retarded glandular maturation, and one women showed no progress. The histological findings were conclusive for a significant maturation delay and an impaired endometrial receptivity. There was a lack of correlation between the peripheral hormonal blood levels and the endometrial maturation.