摘要:这3名患者在取得稳定的分子学缓解之后(融合基因转阴PCRU)停用达沙替尼。1名患者复发,另外两名患者在1年后仍保持了PCRU。以前说过,达沙替尼确实可以提高免疫力,希望今后能获得更多的相关研究报告。6 e+ a0 \, L! U* E7 s
关于这个研究值得注意的是,这三名患者都是服用格列卫失败后转用达沙替尼的,也即他们对格列卫是耐药的。这与法国的格列卫停药研究又有所不同,那个研究中的患者都是对格列卫反应良好的。希望医生们能扩大研究长期观察,看看停用达沙替尼是否能持久不复发。
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作者:来自澳大利亚+ a* {8 \7 r9 ?2 _
来源:Haematologica. 2011.8.9.$ X( `* A' ]. m) H, A% D Q; T
Dear Group,) i" Q4 Z3 w6 t% Q- V
( \ p/ P* H+ C& \Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML9 x% A2 _5 [5 x1 j4 `
therapies. Here is a report from Australia on 3 patients who went off Sprycel
+ y1 [( @' B( P4 u" A. n5 Vafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients. g, C6 r( i6 T7 R3 L% @
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel- d( A& q; D$ [. ]* S- W
does spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed
6 I5 ?" _3 l9 V0 }1 U8 aGleevec and Sprycel was their second TKI so they had resistant disease. This is
0 Y7 C. o! Z4 _8 t6 z: }+ `different from the stopping Gleevec trial in France which only targets patients
4 [- o# E4 X4 \2 L5 q$ ?who have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the
4 x0 x" \3 K, B8 oresponse off Sprycel is sustained.
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% u, ]3 P$ Y6 l9 w7 h+ |/ yBest Wishes,
2 t! C; F1 b% U, hAnjana+ ~, i5 J2 K, p! X2 v
. ]8 S4 F1 B( x4 T$ e; O& d3 _: H6 S( w; t
/ c- p5 b4 H$ P6 K, j0 k* N5 H5 EHaematologica. 2011 Aug 9. [Epub ahead of print]% m/ D/ L2 E7 p! P) \1 Q* U0 {
Durable complete molecular remission of chronic myeloid leukemia following; n5 L5 Q G# O/ H
dasatinib cessation, despite adverse disease features.
( y3 ?% ~# E0 f( X; k( gRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
% y8 z( u1 z1 @+ Q, P, dSource
5 Q1 C- t. u8 O4 iAdelaide, Australia;
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! `. l( x# c, M0 i4 A2 c) d# {Abstract0 d& i3 h" v4 P
Patients with chronic myeloid leukemia, treated with imatinib, who have a4 v0 n# {- m& {+ Q6 Y; q1 ^3 b: ~
durable complete molecular response might remain in CMR after stopping, Q, J9 E( y5 r- J
treatment. Previous reports of patients stopping treatment in complete molecular
- w9 T6 I: e5 h- Q; yresponse have included only patients with a good response to imatinib. We3 A' ] K y9 h
describe three patients with stable complete molecular response on dasatinib& X, a5 V/ V f9 z2 ?
treatment following imatinib failure. Two of the three patients remain in8 P( ~ z8 E( M
complete molecular response more than 12 months after stopping dasatinib. In) v6 ?& J1 ~8 J/ J6 K, p" j8 \
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
4 U) }: U5 l8 T5 ?5 Y2 hshow that the leukemic clone remains detectable, as we have previously shown in
$ n' A& P3 d; m; _# himatinib-treated patients. Dasatinib-associated immunological phenomena, such as6 N. u5 Q; c' t9 [. Z3 {, G
the emergence of clonal T cell populations, were observed both in one patient7 z" F* A* w- V, W+ S* r5 N
who relapsed and in one patient in remission. Our results suggest that the
) N. p: d4 y- k5 l4 U- [0 ccharacteristics of complete molecular response on dasatinib treatment may be
' g' c* I4 _3 d* H& @6 Fsimilar to that achieved with imatinib, at least in patients with adverse, S# X' J1 C, y, w9 w
disease features.
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