Egg Freezing Safe for Pregnancy, Study Finds

If you are considering egg freezing, but worried that the procedure will harm the eggs, find comfort in a new study from Reproductive Medicine Associates of New Jersey (RMANJ).

In a study published in the journal Fertility and Sterility, the fertility specialists at RMANJ found that embryos created from eggs that had been vitrified were able to achieve pregnancy at similar rates as embryos that had been created from fresh eggs. The randomized, controlled trial compared frozen and control eggs from a single patient within a single cycle and a single fresh transfer.

In the study, there was a total of 588 mature eggs and 294 that had been frozen. Out of those 294,  240 survived thawing. For the surviving frozen eggs, there was no difference in the rate of chromosomal abnormalities (aneuploidy), and the ongoing pregnancy rate per embryo was comparable. There was, however, a lower fertilization rate among the embryos created with frozen eggs.

The study is reassuring news for women concerned that freezing their eggs and pursuing in vitro fertilization (IVF) at a later date would not be as successful as pursuing IVF with embryos created from fresh eggs.

Bottom Line: The scientists found that embryos created from frozen eggs were 1) not likely to have increased chromosomal abnormalities and 2) just as likely to implant and create a successful pregnancy.

September 24, 2012
Posted by Leigh Ann Woodruff

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