Revisão das técnicas de biologia molecular aplicadas no diagnóstico genético pré‐implantacional e uma reflexão ética

The preimplantation genetic diagnosis (PGD) is a tool that allows the selection of healthy embrios through gene and chromosome analysis, benefiting couples at risk. Like couples with recurrent miscarriage or family history of hereditary disease. Given the advance of the methodologies used in PGD this review aims to assemble information about the biopsy techniques, molecular biology and bioethical aspects of this practice. Therefore, it was possible collect the information like advantages, disadvantages, restrictions and indications referring to embryonic stage in which is made the removal of genetic material and molecular biology techniques used in genetic analysis. In addition, some bioethic questions that arise with the practice of PGD were verified as, for example, possible Eugenia. It was concluded that the analysis of trofoectoderme of embryos and the application of NGS technology is promising for the future of PGD, as well as the primordiality the creating laws governing and complete the gaps in the ethical and moral sense of this practice.