The findings of three
The screening called pre-implantation genetic screening (PGS) for aneuploidy involves the testing of a single cell from a three-day old embryo. It is similar to PGD, a test that looks for specific genes known to cause inherited diseases. Preimplantation-screening of IVF embryos is expensive-the technique virtually doubles the procedure’s overall cost. Until now, eggs from younger women were generally considered to be more frequently defect-free. This concept has been challenged.
Dr. Jeffrey Nelson of the
While most agree that the results have challenged traditional thinking, the ensuing recommendations vary from the radical to the cautious. Dr. Nelson believes the UK Human Fertilisation and Embryology Authority should relax its guidelines and recommend wider IVF screenings. A spokesman from the HFEA answers, “we are concerned that women are properly aware of the potential risks before they choose to have this test and that women and embryos are not tested unnecessarily. Mr. Stuart Lavery, a consultant gynecologist at