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Welcome to IVF
Cumulus Aided Transfer (CAT)
CAT Enhances IVF Success at Jaslok Hospital and Research Centre

An innovation developed for the first time in the world by our team has dramatically increased the success of Assisted Reproduction (IVF/ICSI). The technique is known as CAT (Cumulus Aided Embryo Transfer).


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During a plenary lecture, Dr. Firuza Parikh described the technique as follows, "We have harnessed nature to improve pregnancy rates. The embryos are transferred into the uterus along with cumulus cells. These cells surround the oocyte at the time of ovulation. After oocyte retrieval, the cumulus cells are usually discarded. Instead, we allow them to grow in the laboratory as the cells are rich in factors, which facilitate the growth of embryos. At the time of embryo transfer, droplets of cumulus cells are added to the embryos."

The technique was carried out on 507 women, more than half of whom had failed IVF attempts in the past. In this group of women pregnancy rates increased to 46%.

CAT is especially useful in cases with previous unsuccessful IVF attempts, in older women and in cases where less number of oocytes are obtained. Scientific data on this procedure was published in the prestigious and leading international  scientific journal called Fertility Sterility (October 2006) as a Front Page Article.

Dr. Parikh added that "IVF is not merely a science, it is also a meticulous art. You look into the little details, work with nature instead of trying to outsmart it and always strive towards improving pregnancy rates - CAT is a movement in that direction."

More than 5500 babies from 40 different countries have been born with the help of advanced ART procedures carried out by the Jaslok team, making it one of the leading centers of the world.

Reference "Cumulus coculture and cumulus-aided embryo transfer increases pregnancy rates in patients undergoing in vitro fertilization" Fertil Steril Oct. 2006.

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