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。( y1 C7 y: W5 S S% b
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。" P* j; F; z) a6 x d: x
( ? U- R* G& d/ @作者:来自澳大利亚
* i1 V4 x# S6 a% C: V) [; H0 s! Q" b+ g: `来源:Haematologica. 2011.8.9.) \; F6 U. g1 f& Z" e8 n: s
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
# k$ F9 `5 I- Y: W. C" atherapies. Here is a report from Australia on 3 patients who went off Sprycel
$ U+ C$ b' a( c+ n' Q+ s* Dafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients: v( @. F |7 Q# p1 }0 \% M
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel3 e1 ^: u* d) |0 J
does spike up the immune system so I hope more reports come out on this issue.
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6 {! F7 M- t- ~# V8 BThe remarkable news about Sprycel cessation is that all 3 patients had failed y/ x* @# W4 L0 h3 h
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
5 s) D& g( i+ p q+ E! X( pdifferent from the stopping Gleevec trial in France which only targets patients; g3 J- ?- r, Y9 P! B9 q
who have done well on Gleevec.
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. W5 o3 o. q8 ^Hopefully, the doctors will report on a larger study and long-term to see if the; Q1 C, U* X1 j5 R
response off Sprycel is sustained.
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; ~. D3 V0 ~1 l+ P9 \* ~. F& {Best Wishes,
5 E+ H, ^5 D/ wAnjana
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: W0 N L# E$ h t$ C; x) E' o8 \Haematologica. 2011 Aug 9. [Epub ahead of print]
6 l N; [# g" U' S; K3 B6 WDurable complete molecular remission of chronic myeloid leukemia following
0 p* ?- a. K, N+ [$ U- Bdasatinib cessation, despite adverse disease features.1 N3 r2 r* z; \3 L6 Y+ ]; k
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.0 `* J) g T5 U v
Source {1 O ]! {% i, ^" E
Adelaide, Australia;
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Abstract! n; o4 i8 U- m% T% n+ Y, w' \
Patients with chronic myeloid leukemia, treated with imatinib, who have a, V: ]* A( m3 R& E
durable complete molecular response might remain in CMR after stopping( s6 A8 g5 B. [: s7 T
treatment. Previous reports of patients stopping treatment in complete molecular# N) A+ A+ C4 l7 {; t2 T
response have included only patients with a good response to imatinib. We! s! C& U5 O0 H) a: T
describe three patients with stable complete molecular response on dasatinib
4 D: N6 y/ z9 l" u/ Jtreatment following imatinib failure. Two of the three patients remain in; P2 r9 s& K8 C2 K5 F
complete molecular response more than 12 months after stopping dasatinib. In- \% e! W, H# g g
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to" m+ s/ m. h+ s2 n+ R0 E# Y
show that the leukemic clone remains detectable, as we have previously shown in4 X+ k- H D( s. J9 v
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
* X$ A$ R! }: u4 Z5 {4 ~the emergence of clonal T cell populations, were observed both in one patient
y) P a8 c/ I" K9 W8 ywho relapsed and in one patient in remission. Our results suggest that the
+ }0 b' U8 {' ]characteristics of complete molecular response on dasatinib treatment may be
& r$ F, v2 M: y5 hsimilar to that achieved with imatinib, at least in patients with adverse& ^( R& x ]# p5 G0 R+ ?2 J
disease features.
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