Julien Meunier obtained his PhD in 2005 in the group of Prof. L. Duret at the University of Lyon, CNRS, France, on “substitution rate variability in the human genome”. In 2009, he joined the group of Prof. J. Marvel at INSERM in Lyon as a post-doc, where he worked on T-cell expression profiling using various infectious models to discover new markers of the immune response. He joined Prof. Kaessmann’s group on the 1st of January 2010.