How Common Are Transgender Siblings

http://www.people.com/article/transgender-siblings-expert-weighs-in

People/By Blake Bakkila  03/09/2016 AT 06:05 PM EST

"Lilly Wachowski announced that she identifies as transgender on Wednesday, just four years after her sister, Lana Wachowski, also came out as trans.

Though this marks the first sibling duo in Hollywood to both come out as transgender, the Wachowski sisters' journey is not entirely unique. "

The article makes no mention of possible environmental factors (DES?)

I agree that outing someone is pernicious, but no more so than any of the other invasions of privacy the press routinely imposes on celebrities.

The most annoying thing about this substance-free article is that it doesn't even try to answer the teaser question in its headline.