Bioinformatics, Medicine and Healthcare by Modern OR. EURO 2012 was organised by the Lithuanian Operational Research Society and the University of Vilnius, together with The Association of European Operational Research Societies (EURO; http://www. euro-online. org/). The conference participants were researchers, academicians, and practitioners interested in Operational Research (OR), mathematical modelling and quantitative economic analysis. There were more than 2,000 participants who came from various countries of the world, making the Vilnius conference to one the most successful EURO conferences ever.