The reproductive units of Chiron in San Sebastián and Bilbao have achieved the first pregnancy in the Autonomous Community of the Basque Country and Navarre, using the technique called Preimplantation Genetic Diagnosis (PGD). This allows a genetic study of the embryos before implantation in the uterus.
This study allows to avoid genetic diseases such as those related to chromosome X. It is also an appropriate technique for couples who have suffered abortions or repeatedly fail with assisted reproduction techniques.