Glossary:
Preimplantation = A phase of embryonic development before implantation, i.e. before an embryo implants in the uterus.
Preimplantation genetic diagnosis (PGD) = A procedure for the genetic testing of embryos at the preimplantation stage.
Ethics committee = A group of experts that reviews and advises on ethical issues in research or medical practice.
Familial = A trait that is passed down within a family or kinship line.
Genetic findings = The written results of a genetic test that indicate genetic variants or abnormalities.
Chromosome = A structure in the cell nucleus that contains genetic material.
Chromosome alteration = An abnormality in the structure or number of chromosomes that can lead to genetic disorders.
Single-gene disease = A disease caused by mutations (= changes in genetic information) in a single gene.
Embryo = A living being in the early stages of pregnancy, during the first eight weeks after fertilisation.