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 ]8 T. ?- C) k
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+ k; i1 a! {' X, {1 e% m+ l. j2 x
来源:Haematologica. 2011.8.9.
! E+ k+ v3 T! \" U6 NDear Group,) T0 u& |1 S/ \. H+ \
) g& l5 |9 M5 n7 p9 B% [: SSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML. r: R; K2 u" {: l, S! N0 Z
therapies. Here is a report from Australia on 3 patients who went off Sprycel/ v+ O: _& T; W+ j
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients' X- F3 C" H* J9 e' O7 ~4 [9 @( [
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
# H4 K; K/ N2 f+ ^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
" B, g! Z1 t: K L5 k& I) M% }Gleevec and Sprycel was their second TKI so they had resistant disease. This is) R; s% ]9 X% @9 r. z+ v. Z, {; {: [
different from the stopping Gleevec trial in France which only targets patients7 u+ [, e6 g) m+ Y. c
who have done well on Gleevec.6 C0 p6 @9 r* j8 h3 d( b3 a7 g
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Hopefully, the doctors will report on a larger study and long-term to see if the
9 K, N1 a9 p& \0 f2 B2 {response off Sprycel is sustained.# u* p5 z: _: u( _% U$ _' d
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Best Wishes,( e. ~& C4 c ]2 z5 x8 f
Anjana
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! M7 ?6 m- X# h" M6 ~& wHaematologica. 2011 Aug 9. [Epub ahead of print]
: x4 w2 u. v+ i+ a, ZDurable complete molecular remission of chronic myeloid leukemia following
0 s, A3 a' }1 f8 ]) C8 s& g! gdasatinib cessation, despite adverse disease features.4 S6 b8 R& z5 n$ h, m! p) }
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP./ z- r M' i/ I8 a
Source
$ e8 g+ W( X2 _% d* Q5 BAdelaide, Australia;, N0 }0 F" C4 y0 @9 J5 z8 Y
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Abstract# j4 ~# T- o- ^) o; T
Patients with chronic myeloid leukemia, treated with imatinib, who have a* j, C7 m0 j! o" g v$ \( d) T
durable complete molecular response might remain in CMR after stopping l% ]/ v' i p7 l5 Z5 I1 F1 ?
treatment. Previous reports of patients stopping treatment in complete molecular
. `) l- M# u/ \3 L% N; j' Iresponse have included only patients with a good response to imatinib. We6 f# y0 c9 F) ]) z! n6 e
describe three patients with stable complete molecular response on dasatinib, _, @& K( A; u" G; g4 \* `
treatment following imatinib failure. Two of the three patients remain in
4 a' k7 @' o u4 V8 Scomplete molecular response more than 12 months after stopping dasatinib. In
$ u0 `% d: \: J4 h+ ], R" A' m/ Kthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
% T! R W" e5 C* O2 H: H0 h" s" Pshow that the leukemic clone remains detectable, as we have previously shown in
1 @6 v& @- X/ h/ B& e6 O' Zimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
* k. u; [( u; u' Q- [( D; O8 r/ Kthe emergence of clonal T cell populations, were observed both in one patient
) x& P: F5 V2 ]) m/ }7 ~4 h4 Q0 @who relapsed and in one patient in remission. Our results suggest that the
6 V7 g7 G. W7 W/ Ccharacteristics of complete molecular response on dasatinib treatment may be
8 r& ]) X- a, @0 w+ C* Esimilar to that achieved with imatinib, at least in patients with adverse
1 j; [ R* D6 f* Pdisease features." m, _8 @7 y$ A8 y" `
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