Nazneen Rahman is Professor of Human Genetics at the Institute of Cancer Research and Head of the Clinical Genetics Department at the Royal Marsden Hospital. Her research work has been directed towards the mapping, identification and clinical characterisation of human disease genes using genome-wide linkage analysis, positional cloning, candidate gene resequencing, genome-wide association analyses and epigenetic assays. Her primary areas of research are breast cancer susceptibility, childhood cancer susceptibility and human growth disorders. In her relatively short career to date she has already identified and characterised 4 breast cancer predisposition genes and two childhood cancer predisposition genes and two overgrowth genes.