The population of patients requiring this type of embryo diagnostics are couples where one spouse has a dominant genetic disorder, giving their children a 50% risk of inheriting the defective gene; couples who are both carriers of recessive genes, giving their children a 25% risk of inheriting the genetic disorder; or couple whose children may inherit an unbalanced chromosomal pattern.
Another group of patients who may benefit from this treatment method are women of advanced age with higher chances of miscarriage due to the implantation of genetically defective embryos. In the proposed treatment, called Pre-Implantation Genetic Screening (PGS), it is only healthy embryos are implanted in the uterus. Recently published research papers testify that there is nothing in this treatment which increases the rate of live births compared with standard ivf treatment in this particular population.
Women who have a history of recurrent inexplicable miscarriages may find a solution to their problem with PGD. In these cases, repeated miscarriages may arise from the implantation of defective embryos. Early selection of embryos that do not carry a genetic disorder will improve the chances of survival of the pregnancy.