I think there may have been GM mouse studies. But for pregnancy, they needed rhesus monkeys, or something like that. Mice don't make the same early-pregnancy chemical signals. Certain kinds of monkeys do. Definitely the appropriate testing has not been done, and the first-round human trials for pregnancy have now been done on women without informed consent. Note I'm not cheering on animal testing. I just think it's better than testing on pregnant women. In this case, it should never have got to the testing phase, because there are safe, effective, and cheap ways to treat the disease already.

There are rumors now of high rates of neonates with pulmonary hemorrhage, and heart problems. Waiting to see if those turn out to be real or just rumor.