NEW DEBATE What next for preimplantation genetic screening?

Joyce Harper1,13, Karen Sermon2, Joep Geraedts3, Katerina Vesela4, Gary Harton5, Alan Thornhill6, Tugce Pehlivan7, Francesco Fiorentino8, Sioban SenGupta1, Christine de Die-Smulders9, Cristina Magli10, Celine Moutou11 and Leeanda Wilton12 UCL Centre for PGD, Institute for Women’s Health, University College London, 86-96 Chenies Mews, WC1E6HX London, UK; Department of Embryology and Genetics, Vrije Universiteit Brussel, Laarbeeklaan, 101, 1090 Brussels, Belgium; AZ Maastricht, Klinische Genetica, PO Box 5800, 6202 AZ Maastricht, The Netherlands; Sanatorium Repromeda, Vinini 235, 615 00 Brno, Czech Republic; Genetics and IVF Institute, 3015 Williams Drive, Fairfax, VA 22031, USA; The London Bridge Fertility, Gynaecology and Genetics Centre, 1 St Thomas Street, London Bridge, London SE1 9RY, UK; Instituto Valenciano de Infertilidad, Plaza de la Policı́a Local, 3, 46015 Valencia, Spain; GENOMA, Molecular Genetics Laboratory, Via Po 102, 00198 Rome, Italy; PGD Working Group Maastricht, Department of Clinical Genetics, University Hospital Maastricht, PO Box 5800, 6202 AZ Maastricht, The Netherlands; SISMER, Via Mazzini 12, 40138 Bologna, Italy; Service de la Biologie de la Reproduction, SIHCUS-CMCO, 19, Rue Louis Pasteur, BP120, 67303 Schiltigheim, France; Melbourne IVF, 320 Victoria Parade, East Melbourne, 3002 VIC, Australia Correspondence address. E-mail: [email protected]