Advanced systemic mastocytosis with strong expression of signaling lymphocyte activation marker family member 7 (SLAMF7) responsive to therapy with elotuzumab and lenalidomide. Issue 2 (28th January 2020) - Elmaagacli, Ahmet H.; Jehn, Christian; Shikova, Yana; Huber, Michael; Salwender, Hans; Dahmash, Farouk; Singh, Anju; Niggemann, Cornelius; Vierbuchen, Mathias