Response to trametinib of histiocytosis with an activating PTPN11 mutation. Issue 1 (2nd January 2020) - Farnault, Laure; Hélias-Rodzewicz, Zofia; Venton, Geoffroy; Fanciullino, Raphaelle; Gabriel, Sophie; Mescam, Lénaïg; Haroche, Julien; Donadieu, Jean; Emile, Jean-François