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。' Z* A3 ~7 T0 F ]( Z' v% i/ H8 `
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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9 b+ a" J# }, r! p作者:来自澳大利亚2 h0 T, Z0 k" Z( Y6 m; e* U
来源:Haematologica. 2011.8.9.2 F' X- D# t8 q* ], i
Dear Group,
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7 w" f0 a& o, c. `# j, _0 G$ s6 J, g& `Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML. n' S+ U( m$ F% I, m
therapies. Here is a report from Australia on 3 patients who went off Sprycel) x; |1 A" k$ y# U. Y
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
; \$ B: f4 S6 b, R7 Premain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
% V# O E$ M' `) d# `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) o% N* ~! s4 p1 _) U- u
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
! U* [- @* n0 V0 b) Idifferent from the stopping Gleevec trial in France which only targets patients
3 g6 p5 d9 c4 N2 jwho have done well on Gleevec.9 g' Y2 Q1 S' r, K z$ C
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Hopefully, the doctors will report on a larger study and long-term to see if the
7 q! ?! W$ y7 P$ ^" Q, a0 sresponse off Sprycel is sustained.
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3 X- M: [) J1 {& B# |: nBest Wishes,4 a- X& E2 i+ s5 f. D
Anjana a) c+ k; i! ?; q9 P
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$ A4 J$ {7 b) w. E0 E. L' G8 w% _- yHaematologica. 2011 Aug 9. [Epub ahead of print]
5 G$ K j* R; T! Y& {) WDurable complete molecular remission of chronic myeloid leukemia following
7 v# v* i$ B2 U! A) h* a; l/ a& Zdasatinib cessation, despite adverse disease features.
. h p6 P( E' X+ s/ P6 m) jRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP." S, T3 M2 I- [0 s# w; g( b, E
Source
$ E" B; b6 S. Q# S6 g: uAdelaide, Australia;
2 c6 D8 C4 V# j: B- I) K: L, L! x1 l+ X6 u: U- q& j5 z7 J ~
Abstract6 ~" D i! W2 ?' V$ h h
Patients with chronic myeloid leukemia, treated with imatinib, who have a+ A: Y2 v* T! T ^- ~; M# S, `( ^
durable complete molecular response might remain in CMR after stopping- X" v/ M, P1 Y/ u% Y1 u
treatment. Previous reports of patients stopping treatment in complete molecular
1 W' ^: j( Z: z' Hresponse have included only patients with a good response to imatinib. We
% g* |! H2 \1 w2 O9 h2 qdescribe three patients with stable complete molecular response on dasatinib
- T- \% E0 y y: C" E: Ktreatment following imatinib failure. Two of the three patients remain in% {" l4 ~6 W* [$ i
complete molecular response more than 12 months after stopping dasatinib. In
t+ I/ M: S; c: m e. `* Fthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to7 H- i$ @8 z) [1 K, ?
show that the leukemic clone remains detectable, as we have previously shown in
9 y& G2 a; h( n; U) `( c; Pimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
: R' Y) L8 \! l6 sthe emergence of clonal T cell populations, were observed both in one patient$ C6 x4 e# S# Q; t) v5 k2 q
who relapsed and in one patient in remission. Our results suggest that the( q# k9 s" W& X0 D2 G, R/ c9 \+ _
characteristics of complete molecular response on dasatinib treatment may be( j1 z* g9 P3 x% N# Z
similar to that achieved with imatinib, at least in patients with adverse
) ]# F# d6 {* y% \* L$ j/ Q7 [6 Gdisease features.
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