The maternal-pediatrics area of the Vall d’Hebron University Hospital will host from the 2nd to the 19th of February the exhibition Menys rares (‘less rare’ in English), dedicated to research on rare diseases. The exposition is organized by the "http://www.accc.cat/" Catalan association of scientific communication (ACCC), the "http://www.ciberer.es/" Center for Biomedical Network Research of Rare Diseases (CIBERER) and the "http://www.cnag.cat/" National Genome Analysis Centre (CNAG). Menys rares was opened in 2014 at the Sagrada Familia Library in Barcelona, and includes a summary of the research carried out at Vall d’Hebron Institute of Research (VHIR) in more than one hundred rare diseases, in which Vall d’Hebron is the leader in Spain. The exhibition shows the reality of these diseases that include between 5,000 and 7,000 different types of pathologies. The European Union classified as ‘rare diseases’ those that affect less than 1 individual out of 2,000, according to "http://www.orpha.net/consor/cgi-bin/index.php" orpha.net. The origin of most of these diseases is genetic and there is a lack of medical and scientific knowledge about them. For that reason, the research of therapies and drugs is essential. In Spain there are several research groups that work together through entities such as CIBERER (from the Instituto de Salud Carlos III), or CNAG. As 2013 was the International Year on Rare Diseases, both institutions, together with the ACCC, decided to promote the research carried out by their scientists in these diseases.The aim of the exhibition is to show to the society "http://vimeo.com/87871110" what rare diseases are really all about, and what researchers are currently doing to combat their effects. With particular cases, such as "http://vimeo.com/87591479" Lowe, "http://vimeo.com/86992298" Wolfram or "http://vimeo.com/87341944" Williams syndromes, the exhibition will illustrate at Vall d’Hebron several studies in the field of rare diseases.