The implantation rate after frozen-thawed embryo transfer cycles depends mostly on the receptivity of the endometrium and the embryo quality.The effects of human chorionic gonadotropins (hCG) on the endometrium have been investigated for several years. hCG was shown to up-regulate gene expression during the differentiation of human endometrial stromal cells into decidua. The aim of our study was to assess the benefit of hCG supplementation throughout the secretory phase of artificial frozen-thawed embryo transfer cycles.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
300
S.C. Ovitrelle 250 mcg once
Hadassah Medical center
Jerusalem, Israel
implantation rate
Time frame: 4 weeks
pregnancy rate
Time frame: 4 weeks
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