All the trials up to now, there are not many, and all the observational and retrospective analysis show it doesn’t. However some papers from good labs show it reduces the miscarriage rate. This depends on the type of research and how someone plans the research schedule in order to test and have an answer for this type of question. In our lab it reduces the miscarriage risk but does not eliminate it as miscarriages happen in humans due to other factors such as immunological factors, thrombophilia factors and uterine factors. Therefore someone, like a doctor should really test for all these factors in recurrent miscarriage couples and then direct the couple to go through PGTA.
