Leo Messi supports once again a worthy cause. In this case, promoting a tale with a supportive objective: ‘La força del Barça’, written by Víctor Panicello and illustrated by Marta Biel Tres. The book, which is already on sale, is a joint project of FC Barcelona, Leo Messi Foundation and Fundació Ànima, with the aim of collecting funds for research against child cancer at Vall d’Hebron Institute of Research (VHIR).'La força del Barça', is addressed to children above 6 and it tells the story of Nico and Laura: two child with cancer who have the opportunity to meet their idols in a Barcelona’s training session. The book costs 9,95 euros and it is edited by Estrella Polar.All the funds collected will be sent to the Translational Research in Child Cancer group at VHIR, led by Dr. Josep Sánchez de Toledo, head of the Oncology Service at Vall d’Hebron University Hospital (HUVH), who has written the introduction of the book. The vocation of this research group is to find molecular evidences for designing specific and potent anti-oncogenic drugs and, in general, to improve the therapies for patients with cancer, in order to improve their survival rates and to reduce the possible secondary effects. Vall d’Hebron is a Spanish and international center of reference in the treatment of child cancer and hematologic disorders. Since 1984, the service has done 1040 transplantations of haematopoietic progenitors: of bone narrow, peripheral blood, and blood from the umbilical cord. Last year, the Service of Child Oncology and Hematology at HUVH got the quality JACIE accreditation, which is the most prestigious recognition in this field.