Previous study to the cycle of IVF, which is done from the DNA of the applicant couple and their relatives.
Although the diagnosis protocols are highly standardized , it is necessary to adjust them to the applicant´s family. In order to do so, it is necessary to have the clinical and molecular reports of the carrier or carriers available, as well as a blood sample or mouth smear of each member of the family, which is necessary to develop the diagnosis protocol. This study allows us to follow the track of the disease along the members of a family, using a battery of the genetic markers and establish this way the diagnosis protocol, which will be carried out later in the phase of the PGD. The study has a response time of 30 days. Until the report is not issued the IVF cycle can not be started.