DNA is tightly wrapped around histones to form chromatin, a highly dynamic structure that can adopt different conformations with contrasting degrees of compaction. Essential processes of DNA metabolism, such as DNA repair, replication or transcription operate in the context of chromatin and higher order chromosomal organization. Understanding how modulation of chromatin structure and repair influence cell fate decisions in development and disease or how genome surveillance factors interact with the chromatin structure to safeguard the genome is an emerging question that represents a major challenge for human health. The objectives of the aDDRess ITN are: 1. to establish a European research platform of excellence in the proposed field, 2. to create a Network dedicated for the training of ESR/ERs promoting their independent careers and prospects and 3. to transform our current collaborations into a stronger intellectual and training network with links to the industry. In addressing these aims, we have put forward a multidisciplinary approach to study this central thematic area at the molecular, cellular and systems level by assembling a group of scientists with cross disciplinary expertise and capabilities. This integrated approach is likely to provide a solid groundwork on genome maintenance and chromatin dynamics driven by DNA damage.