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Correspondence

Nature 446, 372 (22 March 2007) | doi:10.1038/446372b; Published online 21 March 2007

Open Innovation Challenges

Genetic test may lead to waste of healthy embryos

Roger Gosden1

  1. Weill Medical College, Cornell University, New York, New York 10021, USA

Your News Feature "The first cut" (Nature 445, 479–480; 2007) highlights a controversy about preimplantation genetic diagnosis (PGD), a procedure to test for genetic disease that is now more widely used for screening chromosomes in embryos after in vitro fertilization (IVF). Randomized clinical trials are needed to determine whether aneuploidy screening improves pregnancy rates, or whether embryo biopsy has any impact on the health of future children and adults.