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No reason to delay FET after freeze-all strategy

Karinna Lattes and colleagues from Barcelona, Spain, investigated retrospectively 512 freeze-all cycles and compared FETs that occurred in the first menstrual cycle following ovum pick-up (n=263) with those that occurred later (n=249). Live birth rates were not poorer when FET had been performed immediately following the pick-up cycle. Neither did they find a difference for biochemical pregnancy, clinical pregnancy, or pregnancy loss. According to these results there is no need to wait one or more cycles after freezing all embryos before performing FET.

JLH (Hans) Evers, Editor-in-Chief Human Reproduction