How often is pre-implantation genetic diagnosis (PGD) or pre-implantation genetic screening (PGS) carried out?
Although PGD and PGS have been carried out since the late 1980s/early 1990s, we have only been collecting data on this since 2002. The number of women having IVF or ICSI treatment involving either PGD or PGS increased from its introduction in the 1990s: • In 2002, 120 women had IVF or ICSI treatment involving PGD or PGS. • In 2003 this had increased to 2,008. • From 2004 onwards information about PDG and PGS was collected separately and is shown in the following graph. • In 2007 just over 350 women had PGD or PGS with PGS being slightly more commonly carried out than PGD.
