Sorafenib as third- or fourth-line treatment of advanced gastrointestinal stromal tumour and pretreatment including both imatinib and sunitinib, and nilotinib: A retrospective analysis

Gastrointestinal stromal tumourGISTSorafenibNilotinibSunitinibImatinibTyrosine kinase inhibitorRelapseSalvageProgression