Records of women who had PGD over the last 3 years will be reviewed and its outcome will be compared to other records of women who had IVF/ICSI without PGD Before starting the PGD process couples were seen by a geneticist to assess the feasibility of the procedure for each couple. Couples were then counselled by a gynaecologist specialised in IVF to assess their fertility status and explain the whole procedure including the expected success rates and risks of IVF.