The 5th edition of the Neurostories organized by NeuroMarseille took place January 25, 2024 with the theme “The brain: a permanent work in progress”. The aim was to produce a 15-minute stand-up by telling a vulgarized story about the brain. Emma Legait, Phd student in the Maurange Team, presented how a deregulation of the cellular and genetic choregraphy during the brain development can lead to childhood cancers.