London: British scientists are developing a test for embryos that could dramatically boost IVF success rates from a single cycle of treatment. The technique, from experts at Oxford University, checks for chromosomal abnormalities in the developing embryo but also looks at two new markers that could potentially cause pregnancies to fail. Over time, researchers hope they can increase success rates towards the 100percent mark from just one cycle of IVF.At present, only around 30percent of IVF cycles worldwide result in a pregnancy, with many failing due to chromosomal abnormalities.Dr Dagan Wells’ team at Oxford have already pioneered a technique for checking embryos for these abnormalities. Embryos are grown for five days in the lab and analysed to check the chromosome number.Only those embryos that are healthy are considered suitable for IVF transfer - increasing the chance of pregnancy to 70percent per cycle.
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