Yes, sometimes it turns out fine, sometimes the baby has a heart defect that will kill it at the age of three. I think it's understandable that parents want to prevent a horrible disease from happening to their child.

The whole topic is very difficult, as it's something completely new, there is nothing we can really compare it to. And because of this, we don't know the possible consequences.

As with every scientific progression, this can bring great results - or horrible ones. Who knows.