Sonia Bañuelos got her PhD in Biochemistry from the University of the Basque Country, in 1995. She worked at EMBL (Heidelberg) and CIB (Madrid) for postdoctoral training. After a Ramón y Cajal contract, she is now a researcher at Biofisika Institute and a Faculty member of the Department of Biochemistry at the University of the Basque Country. Her group studies the molecular mechanisms determining the function and cellular localization of nuclear proteins involved in human diseases. For the last ten years, she has focused on the oncoprotein nucleophosmin, deregulated in a type of leukemia. Her research has contributed to understanding the molecular bases underlying nucleophosmin traffic, role in DNA repair, and deregulation in cancer.