Silvia Stacchiotti is a medical oncologist and works in the Adult Mesenchymal and Rare Tumor Medical Treatment Unit, Cancer Medicine Dept, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy. Her clinical and research activities focus on adult soft tissue and bone sarcomas, including GIST. She is involved in all institutional research activities on sarcoma, with a special focus on very uncommon subtypes. She is a member of the Italian Sarcoma Group, of the EORTC Soft Tissue & Bone Sarcoma Group, of the ESMO and ASCO, and of the Connective Tissue Oncology Society. She collaborates to the Italian Network on Rare Tumors. She is member of the advisory board of the Chordoma Foundation and of Desmoid Tumor Research F. She is in the list of European Medical Agency (EMA) external expert.