Association of KIT exon 9 mutations with nongastric primary site and aggressive behavior: KIT mutation analysis and clinical correlates of 120 GISTs

Antonescu CR, Sommer G, Sarran L, Tschernyavsky SJ, Riedel E, Woodruff JM, Robson M, Maki R, Brennan MF, Ladanyi M, DeMatteo RP, Besmer P.
Clin Cancer Res. 2003 Aug 15;9(9):3329-37.
This paper describes exon 9 mutations in GIST, which are less likely to respond to Gleevec.
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