[1] In 1992, Gérard obtained his diploma in Art History at the École du Louvre, with a specialty in ancient and Christian iconography, then a year later in Museology.

In 2002, he took over the management of the Musée de Montmartre in Paris, where he produced several major exhibitions, such as a first retrospective devoted to Théophile Alexandre Steinlen in 2005.

In 2006, he joined the LVMH group and the heritage department of the Louis Vuitton trunk maker where he was responsible for international exhibitions.

On 18 June 2017, Gérard was elected in the 15th constituency of the Nord by obtaining 51.29% of votes in the second round against the LR 's candidat.

[6] In July 2019, Gérard voted in favor of the French ratification of the European Union’s Comprehensive Economic and Trade Agreement (CETA) with Canada.