France's president, Emmanuel Macron, and his wife, Brigitte Macron, intend to provide "scientific" evidence in court to disprove claims she is transgender.

It is the first development in a legal challenge mounted by the French presidential couple against American conservative commentator Candace Owens two months ago.

Ms Owens has propagated unsubstantiated claims that the first lady was born male and used to go by the name Jean-Michel Trogneux — who in reality is Ms Macron's older brother.

Here's what to know about the case.

What is the Macrons-Candace Owens case?

In July, the Macrons sued Ms Owens for defamation at the Superior Court in Delaware with a 218-page complaint seeking a jury trial and punitive damages.

The lawsuit related to allegations Ms Owens made online in March l

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