It’s official. Sara Kelly Keenan, 55, has been issued an official New York birth certificate listing her gender as “intersex” rather than male or female. Experts estimate 1 baby in 1,500 can’t be classed as completely male or female at birth. Keenan, who was born with female genitalia and male genes, is also the second U.S. citizen to change her official gender to non-binary. She hopes this will lead to more flexibility on other government documents and says it’s “empowering” to have the word on her official paperwork.