(Let me add to this: I've heard stories that many parents in the US enthusiastically support their child's decision to transition because they secretly don't want a gay son or daughter and would even prefer a transgender son/daughter over that. With that in mind, I think it's fair to say that if this screening were to become widely available tomorrow plenty of people would make a decision of whether to terminate based on its findings.)
There are entirely too many stories of parents taking action with respect to the gender of their already-born children than I wish to discuss. Though, for what it's worth, I'll say this:
I think that many, many parents for inexcusably incompetent or selfish reasons are doing untold damage to their kids by and through so called "gender clinics" and the butchery/chemical perversion they offer.
There is no medical evidence at all to suggest that anyone can know that they are in fact trans before the age of, at least, 25.
There is an incredibly high rate of post-op trans kids committing suicide.
The so called doctors who are offering hormone "therapy" and gender reassignment anything to anyone under the age of 25 should be stripped of their medical license if not imprisoned.
Around the world gay boys are being told they're girls by know-nothing imbecile parents and malevolent "doctors" who are out to profit over the latest politically driven pseudoscience that is the universe of all research supporting the idea that gender dysphoria is anything other than a mental illness.
Nearly all feminine gay boys are NOT trans, or victims of gender dysphoria. They're just feminine, and it is beyond perverse to have some medicalized bullshit tell them that they're trans and need hormones or a sex change operation because of what is most likely nothing more than a passing phase.
This is once again another instance of psychiatry discrediting itself by and through its normative psudoscientific bullshit, that has and will continue to visit spectacular harm on great quantities of people.
This reminds me of how gay boys and young men used to be forcibly castrated as was the recommendation of the so called APA until 1979 as a "therapeutic" measure. It is beneath contempt, and a repeat of the identical mistakes that were made decades ago.
Any parent that puts their kid on hormones or takes them to a gender clinic is a terrible, irresponsible, incompetent parent.