Health of IVM children

Excerpt

In vitro maturation (IVM) is an emerging type of assisted reproductive technology (ART), in which immature as opposed to mature oocytes are collected from the ovaries and allowed to mature in vitro prior to fertilisation by either standard in vitro fertilisation (IVF) on intracytoplasmic sperm injection (ICSI). Since the first report of a human birth resulting from IVM in 1991 [1], it is estimated that over 1,300 babies have been born following the technique [2] (in contrast to an estimated 3 million babies conceived by standard IVF and ICSI over the last 30 years). IVM offers a number of potential benefits when compared to standard IVF, principally related to the avoidance of high doses of hormonal stimulation with gonadotrophins and GnRH analogues. In patients with polycystic ovary syndrome (PCOS) this avoids the risk of ovarian hyperstimulation syndrome (OHSS). The high costs of hormonal therapy also make IVM cheaper than conventional alternatives. Immature oocyte retrieval, without the need to wait for hormonal stimulation and in vivo maturation, offers the possibility of expedient oocyte cryopreservation for patients diagnosed with cancers without delaying cancer treatment. However, despite recent improvements, pregnancy rates with IVM remain lower than with conventional IVF, and higher miscarriage rates have been reported with IVM [2]. For these reasons IVM has yet to become widely used in the field of ART. …