We distinguish three types of PGT depending on the defects evaluated: * PGT-A: also called preimplantational genetic screening (PGS). Improves pregnancy rates by allowing the discard of aneuploids and the selection of euploid embryos for transfer. Euploid embryos are more likely to implant and develop into a healthy pregnancy. NGS and FISH are the most frequently techniques used for the<unk>  of monosomies, trisomies and poliploidies. * PGT-M: in this case, monogenic diseases are being evaluated in the embryo. Monogenic disorders are caused by single-gene mutations (autosomal recessive, autosomal dominant, X-linked). Previously, PCR, was used for PGT-M. However, more recently PGT-M uses array and NGS technology. * PGT-SR: every structural abnormality in the chromosome is taken into account (translocations, inversions, duplications, insertions, deletions). Various techniques used: PCR, FISH and NGS.
Preimplantation genetic diagnosis
Preimplantation genetic haplotyping
Non invasive prenatal testing
Pre-conception counseling
Genetic diagnosis of intersex
Prenatal testing
Magnetogenetics
Fetal echocardiography