Preimplantation genetic testing (PGT) is a technique used in reproductive medicine to identify genetic abnormalities in embryos (less commonly, polar bodies of eggs) created through in vitro fertilization..

In IVF, selecting a good embryo to prepare for transfer plays a very important role. Especially in cases where there are many embryos. If the embryo has a good morphology, the doctor and the couple will usually expect the embryo to have good development potential.

Thalassemia is an autosomal recessive genetic disease. Thalassemia is divided into two main types: alpha and beta thalassemia, depending on which gene mutation causes deficiency in the synthesis of alpha or beta hemoglobin chains.