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。
9 j" l+ y" n2 X7 A4 j 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。" I0 W- ~/ L: Z% ?
; t' p! `7 u$ J: E作者:来自澳大利亚
, I8 D: F: x1 {& X# `0 p来源:Haematologica. 2011.8.9.
; m! \, N- T: o( S2 W) u+ ~Dear Group,) T" h6 M$ o3 x$ u5 Z$ T& p
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
" v! C+ G1 {; _. D. z- e Etherapies. Here is a report from Australia on 3 patients who went off Sprycel7 F) M4 u$ z( n' L" x! x% Z
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
2 |0 S$ \8 ]2 V0 ^9 ^2 V" Uremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
% g% d; L& r. E5 R- z5 Z+ u# O% M9 gdoes 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: h F% v; J" K
Gleevec and Sprycel was their second TKI so they had resistant disease. This is) g" f4 h- P/ |. R# D
different from the stopping Gleevec trial in France which only targets patients
Z7 W/ K; `6 g9 Lwho have done well on Gleevec.! {6 O7 I. {3 x! h0 s
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Hopefully, the doctors will report on a larger study and long-term to see if the) V& v& G+ Z0 _& D% w$ D
response off Sprycel is sustained.
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2 S4 E7 H) Y: Q: a2 l" cBest Wishes,- j* T( L7 c3 t" W
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]
6 e) `; Q1 U2 f/ b/ O4 NDurable complete molecular remission of chronic myeloid leukemia following
3 M0 Q( Q1 R4 W' B$ [dasatinib cessation, despite adverse disease features.
3 m5 c D$ C1 x1 R, yRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
4 b( e# ]- E% v5 d2 tSource
4 Z- Q: a% z1 c W* uAdelaide, Australia;& M2 E+ B% K( v* `- A2 ?
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Abstract
% {4 w; H& }- w, n7 FPatients with chronic myeloid leukemia, treated with imatinib, who have a7 n: b- g0 p$ N
durable complete molecular response might remain in CMR after stopping% N; |$ a" R4 m9 S6 B; K
treatment. Previous reports of patients stopping treatment in complete molecular* N# N0 n9 A! k- F$ v! F3 L
response have included only patients with a good response to imatinib. We
; C5 z9 ?$ q) m% L; g/ z" J$ ndescribe three patients with stable complete molecular response on dasatinib
* Y9 ?, a, ?- w e. h% y/ ctreatment following imatinib failure. Two of the three patients remain in
, i1 S' M( N* G" Acomplete molecular response more than 12 months after stopping dasatinib. In5 y3 G& N& a- x: M" L9 k6 u, j
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
$ B( V4 H4 d# |, ~; I- x: y# O6 r: u! D- Ushow that the leukemic clone remains detectable, as we have previously shown in) R( f2 ~+ K' N
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as. d5 [, k. r% P
the emergence of clonal T cell populations, were observed both in one patient
6 |) g7 m! L8 ]3 U6 Mwho relapsed and in one patient in remission. Our results suggest that the
" P1 }9 W" h; \. W8 `characteristics of complete molecular response on dasatinib treatment may be: R: k. X; Y" |3 C
similar to that achieved with imatinib, at least in patients with adverse
" F( c2 n( K( ^" [disease features.
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