California couple sue clinic for alleged IVF swap 'horror'

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Watch: Daphna and Alexander Cardinale say their memories of childbirth "will always be tainted"

A California couple gave birth to a stranger's child after being given the wrong embryo by a fertility clinic during in vitro fertilisation (IVF), says a lawsuit.

Daphna and Alexander Cardinale say they gave birth in September 2019 to a girl that looked nothing like them.

After a DNA test, they found the couple that carried their daughter to term, and together decided to swap the girls.

This is not the first alleged mix-up during an IVF procedure.

IVF is a procedure during which a woman's eggs are fertilised by man's sperm in a laboratory before the embryos are implanted into a woman's uterus.

The Cardinales are suing the Los Angeles-based fertility centre, the California Center for Reproductive Health (CCRH), as well as In VitroTech Labs, an embryology lab.

The lawsuit alleges medical malpractice, negligence and fraudulent concealment. Neither company responded to a BBC News request for comment.

In an emotional news conference on Monday, Mrs Cardinale said her family's "heartbreak and confusion can't be understated".

"Our memories of childbirth will always be tainted by the sick reality that our biological child was given to someone else, and the baby that I fought to bring into this world was not mine to keep."

Mrs Cardinale said she was "robbed of the ability to carry my own child".

According to the lawsuit, the couple sought help from the fertility clinic in the summer of 2018.

Mrs Cardinale gave birth the next year to a child they thought was theirs.

In the delivery room, Mr Cardinale had expected "a fair child", like their firstborn, but he was surprised to see the baby girl "came out with much darker skin", says the lawsuit.

"It was so jarring that Alexander actually took several steps away from the birthing table, backing up against the wall," reads the legal action.

Nearly two months later the family decided to take at-home DNA tests, which ultimately determined they were not biologically related to the infant.

"The room shrank and got really dizzy and everything just went numb," Mr Cardinale said, recalling the moment the DNA results came back.

The CCRH then helped them find the California couple who had carried their daughter and had given birth to another healthy girl a week apart. The Cardinales' daughter was around four months old when they first met. After several meetings, the couples agreed to go through the legal process of formally exchanging the babies, which happened in January 2020.

"Instead of breastfeeding my own child, I breastfed and bonded with a child I was later forced to give away," Mrs Cardinale said at the news conference.

She added that the incident has been hardest for the couple's seven-year-old daughter, who has struggled to understand the swap.

"The horror of this situation cannot be understated," says the lawsuit.

Mrs Cardinale, a licensed therapist, and her husband, a singer-songwriter, have since both sought mental-health treatment for "symptoms of anxiety, depression, and PTSD", says the legal action.

Adam B Wolf, a lawyer representing the Cardinales, said the other family in the mix-up also plans to sue, but will remain anonymous.

In 2019, another California family discovered that their child had been born in New York.

They sued the birth mother, who reportedly wanted to keep the child. The judge later ruled in favour of the genetic parents.