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。
; F; V5 @+ _. J* x( J1 ?9 D& ^0 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
3 B% U% ], g: ~" s6 ]# U% a# e; {来源:Haematologica. 2011.8.9.4 p/ ~7 b9 B4 q0 C! V" g
Dear Group,0 u" H! O; N$ X; z4 Z
$ b( \$ m5 s- D9 P" t) QSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML) r% ~/ O! u% \- N% ]
therapies. Here is a report from Australia on 3 patients who went off Sprycel
' }1 m a5 o' X; I# `, q# Pafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
! e& k q2 }5 l- f' K$ `remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel) [: @' q, r1 v6 N; v
does spike up the immune system so I hope more reports come out on this issue.! H2 n" L+ ^; U% Y
$ s5 K1 }# c2 S% [, N$ MThe remarkable news about Sprycel cessation is that all 3 patients had failed
' C% q& _3 d+ n% h* ?3 y, jGleevec and Sprycel was their second TKI so they had resistant disease. This is
U i8 K6 j. Z5 O8 V/ [6 I0 x( jdifferent from the stopping Gleevec trial in France which only targets patients
' e- o( C8 a& O6 u/ Rwho 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
, | n ]) T+ X; N. |. H* ?response off Sprycel is sustained.
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Best Wishes,, P$ A5 m3 p$ R! g. N; [
Anjana' l- G0 ]( s4 x5 I8 m* w |# n- e
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3 I" z( Q* {6 `) c- QHaematologica. 2011 Aug 9. [Epub ahead of print]0 t8 f5 V+ p+ m
Durable complete molecular remission of chronic myeloid leukemia following
8 ]3 M/ G% D- ^# ~& e; zdasatinib cessation, despite adverse disease features.
# ]" v# r- R2 ?Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.0 I8 Q. a; V# p; U, A, W: B* C: `6 y
Source5 |' F! E2 W: F, P- ?( u
Adelaide, Australia;
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Abstract- X0 S* b$ X- M6 B1 e9 N" g
Patients with chronic myeloid leukemia, treated with imatinib, who have a# l" n9 K" j1 S- V% ~$ T. R
durable complete molecular response might remain in CMR after stopping
/ }9 `) G Q6 C. w2 A9 o; Ftreatment. Previous reports of patients stopping treatment in complete molecular! S6 z/ }7 t3 m7 T/ x, c+ O) P
response have included only patients with a good response to imatinib. We
8 C) V" A3 i* Y9 Bdescribe three patients with stable complete molecular response on dasatinib
5 W( v I# m5 {6 ftreatment following imatinib failure. Two of the three patients remain in
% @( l3 V; ~8 I5 X- bcomplete molecular response more than 12 months after stopping dasatinib. In' k; r8 v- g# d& ^$ R
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
6 O: g6 v: q0 v" Mshow that the leukemic clone remains detectable, as we have previously shown in
- }) \8 U% Y* z: `, limatinib-treated patients. Dasatinib-associated immunological phenomena, such as
. e9 o& E5 [2 `" Dthe emergence of clonal T cell populations, were observed both in one patient
. @& V. B" s4 Q/ A2 R, fwho relapsed and in one patient in remission. Our results suggest that the: O$ m/ n/ m; i( ~* d8 T8 J
characteristics of complete molecular response on dasatinib treatment may be
; Z0 E, D; G- z+ gsimilar to that achieved with imatinib, at least in patients with adverse
, [/ z, c Z0 A: |1 b0 Q: cdisease features.1 P- H) K; ~8 |) P. U' L
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