Clinical studies are being conducted to see if a new technique that examines the chromosomes of fertilized eggs and returns normal ones to the uterus will increase the chances of giving birth.
Regarding this technology, the Japan Society of Obstetrics and Gynecology has released an interim report stating that while miscarriage has decreased, it has not been effective in increasing the rate of childbirth.
The Japan Society of Obstetrics and Gynecology is called "PGT-A", which examines the chromosomes of fertilized eggs and returns those that are normal to the uterus for those who do not become pregnant or have repeated miscarriages even after repeated in vitro fertilization. We have been conducting clinical research on new technologies from the beginning to see if they are actually effective.
The results of more than 4000 people who participated in this clinical study were reported at the online symposium of the Society on the 23rd.
According to this, if there is no abnormality in the chromosome and the fertilized egg can be returned to the uterus, the rate of pregnancy is 63.1% for those who did not become pregnant even after in vitro fertilization, and 72.4% for those who repeat miscarriage. It was higher than about 35% when I did not use.
In addition, the rate of miscarriage was as low as 10%.
On the other hand, about 60% of all people found abnormalities in their chromosomes and could not return them to the uterus, resulting in childbirth as a whole, which is no different from the case without this technique.
According to the academic society, this technology may be effective in avoiding miscarriage, and Chairman Tadashi Kimura said, "It can be expected to reduce miscarriage and reduce the burden on women's bodies. Including ethical issues. I would like to discuss it and consider it for practical use. "