EmbryoGen/ Blastgen for Couples With Implantation Problems or Previous Miscarriage

A randomised control pilot study will be undertaken for 100 women who have implantation failure (≥ 2 embryo transfers without a pregnancy) or at least 1 previous miscarriage and are having a further IVF cycle.

At oocyte retrieval each couple will be randomised using numbered envelopes containing pre randomised group allocations by a person uninvolved in the trial to:

• BlastGen Group (n=50): culturing their embryos in ORIGIO standard, sequential culture mediums for 3 days (EmbryoGen included) then BlastGen media (GM-CSF containing media) for remaining 2 days or
• Standard Media Group (n=50): culturing their embryos in Cook standard sequential medium for 5 days.

The best single embryo will be transferred on day 5.

The clinical staff and participating couple will be blinded as to whether BlastGen or standard media was used in culture to day 5. Fertility SA embryologists will not be blind as to which study group a couple is in and which media is being used. The embryos will be cultured using the usual methods and lab facilities by Fertility SA's current embryology staff members who will not be blind to the media being used.

Records on the outcome of the oocyte fertilisation, blastocyst development, implantation rate and pregnancy rates will be recorded, as is standard practice. Pregnancy scans will be carried out at 7 and 12 weeks. Live birth outcomes and any congenital anomalies will be recorded.

Inclusion criteria

• women undertaking an IVF or ICSI cycle

• aged between 25 and 41 years
• 2 or more embryos transferred without a positive pregnancy outcome OR a history of at least 1 previous pregnancy loss, OR
• Poor embryo development (<20% of embryo developing on time at Day 3 or no blastocyst above Grade 2 on Day 5)

Exclusion criteria

• male partner requiring surgical retrieval of sperm except in cases of previous vasectomy
• the use of another investigational drug within 30 days
• any severe chronic disease that would significantly influence an IVF cycle
• less than 3 follicles>14mm on ultrasound on the day of HCG trigger