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Franck, C; Rosania, R; Franke, S; Haybaeck, J; Canbay, A; Venerito, M.
The BRAF Status May Predict Response to Sorafenib in Gastrointestinal Stromal Tumors Resistant to Imatinib, Sunitinib, and Regorafenib: Case Series and Review of the Literature.
Digestion. 2019; 99(2):179-184
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Autor/innen der Med Uni Graz:
Haybäck Johannes
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Abstract:
Sorafenib has shown efficacy in patients with imatinib-, sunitinib-, and regorafenib-resistant gastrointestinal stromal tumors (GISTs). No biomarker is currently available for predicting response to sorafenib in patients with GIST. We herein report 3 patients with imatinib-, sunitinib-, and regorafenib-resistant metastasized GISTs, who were treated with sorafenib. Besides receptor tyrosine kinase KIT and platelet-derived growth factor receptor α, also BRAF was tested for mutations. Sorafenib therapy induced a long-term disease control in 2 out of 3 patients over a period of 49 and 19 months, respectively. Sorafenib-responsive GISTs were BRAF wild-type, whereas the sorafenib-resistant GIST carried a BRAF V600E mutation. We confirm sorafenib as an effective therapeutic option in patients with imatinib-, sunitinib-, and regorafenib-resistant GISTs. Larger studies are required to corroborate whether BRAF mutation may predict sorafenib resistance in GISTs. © 2018 S. Karger AG, Basel.

Find related publications in this database (Keywords)
Gastrointestinal stromal tumor
Sorafenib
BRAF mutation
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