PGD will test on a sample from the fertilized oocyte that has become a blastocyst. Depending on the condition on the 5th day from being fertilized, the blastocyst will already be divided into the part that will develop into a baby and the part that will develop into the placenta. PGD will utilize and test 3~5 cells taken from the trophectoderm (placenta cells). According to American research, it has been reported that there is no difference in implantation rate nor the development thereafter when this kind of cell sampling.
The first case of birth from PGD was reported in 1990. Presently, because the first birth from intracytoplasmic sperm injection (ICSI) implemented as a general advanced reproductive medicine was in 1992, PGD from its early days has been an advanced medical technology.
Just by registering in Europe’s Infertility Conference in 2007, over 5,000 persons underwent PGS and had children born. If it is combined with the number of children born in America, it is conjectured to be over around 30,000 persons that have undergone PGS resulting in births. However, there has been no reporting of any abnormalities arising in these children.
We are providing the general information about Preimplantation Genetic Diagnosis.