发给老马备查: 5 F# O/ I) |! s f滴水察海(69304838) 15:23:23 % {) Y. V) H& B+ O. f+ I老马,我看到培美和S-1都提到TS低表达,而鳞多半不是低表达,是不是S-1不靠谱 H0 w7 G$ I+ i& b: l
吉非替尼和S-1连用的依据 + o0 }6 D/ ] [ z+ r2 H8 |0 P6 LGefitinib induced down-regulation of thymidylate synthase and E2F-1 in gefitinib-resistant NSCLC cells with MET amplification but not in those harboring the T790M mutation of EGFR. The combination of 5-fluorouracil and gefitinib synergistically inhibited the proliferation of cells with MET amplification, but not that of those with the T790M mutation of EGFR, in vitro. ) g, B/ q" V; l是不是说因C-MET引起的耐药中,吉非替尼会引导TS低表达 ! a# q4 N \; g这样是不是推理出,耐药后,可以用S-1和培美了?2 X& D. Z& s( M+ R8 b6 c' B
结论: - L: t: H8 t& Q0 f# U, O n2 R2 X. A如果是T790M突变引起的耐药,则2992有效,如果是C-MET扩增引起的突变,则除了184,还可以特+S1联用,而且可能可以用培美。