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。( R8 n" G3 h4 R0 l+ F
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
6 ~$ Z( \4 G& o来源:Haematologica. 2011.8.9.
$ U( {2 y- I1 M( X/ KDear Group,; Q' p3 O4 @. m, a# W, J
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
6 R9 ~8 X* v5 ^therapies. Here is a report from Australia on 3 patients who went off Sprycel
$ y6 {5 q6 t% A( [: V- ^after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
3 u& p9 z+ i. K7 B' z& h1 R1 H# ?remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel& H/ G p9 R6 Z7 d1 K; u0 x
does spike up the immune system so I hope more reports come out on this issue.
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/ I) c# R' \' x' bThe remarkable news about Sprycel cessation is that all 3 patients had failed: C9 M- S6 j z5 P0 i, H1 E
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
" _0 ~2 o3 z T$ ~different from the stopping Gleevec trial in France which only targets patients
3 H4 V& J. i: A6 m! Wwho have done well on Gleevec./ s' Q- B% w) g8 P; w1 L2 g
t4 ]1 F3 t+ z3 S$ O" qHopefully, the doctors will report on a larger study and long-term to see if the
3 R+ D( @( x. j' q0 M$ A9 Tresponse off Sprycel is sustained.
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Best Wishes,' E5 Y) O: ~3 X, z: m
Anjana1 G0 F3 M, I$ j% R |
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Haematologica. 2011 Aug 9. [Epub ahead of print]
: |, D$ V5 B9 o/ fDurable complete molecular remission of chronic myeloid leukemia following$ c/ ]7 v$ ]' m; M4 s; w
dasatinib cessation, despite adverse disease features.
- U6 n. z0 ^" _5 s6 Y; u- D8 PRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
3 x, q6 u* K0 U/ N) O$ X; \, {5 J4 @* P, ySource
8 b$ ^6 ~9 l7 c8 I! y8 q& a4 c: `Adelaide, Australia;9 Z6 T& {3 ^) y0 C6 u
1 E) e: w4 ~* x z5 }Abstract
9 O* {& m- O ?' j1 lPatients with chronic myeloid leukemia, treated with imatinib, who have a0 [5 X+ O) {4 ~
durable complete molecular response might remain in CMR after stopping6 i# ]: l/ y) }$ { S
treatment. Previous reports of patients stopping treatment in complete molecular
& V" z N- p/ c3 |# Fresponse have included only patients with a good response to imatinib. We+ f$ \# r7 ?1 @
describe three patients with stable complete molecular response on dasatinib
, E. P5 E1 Z/ s/ c8 o; itreatment following imatinib failure. Two of the three patients remain in9 ~; O- n5 o M2 {$ Z
complete molecular response more than 12 months after stopping dasatinib. In
( _7 ]9 v, d: b. a$ p# y' {these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to4 r# w1 R8 k. n! x+ j# G% }' a
show that the leukemic clone remains detectable, as we have previously shown in
5 ~# p, j, w, Y1 G! a' Vimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
% u# q' c7 z$ gthe emergence of clonal T cell populations, were observed both in one patient
" `! ~6 z- O. ?5 owho relapsed and in one patient in remission. Our results suggest that the
' I9 k# u$ f6 Z! Y% }4 {characteristics of complete molecular response on dasatinib treatment may be: H: @, ?- ~ k. i/ I: ^
similar to that achieved with imatinib, at least in patients with adverse5 Q6 `# a2 j* Q& Z9 B* Z
disease features.
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