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。$ y m* r* O- v& G& s W' \
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。# r6 w9 y% U' H+ ~
! d2 S# G0 }% J. h6 @作者:来自澳大利亚" l+ ]6 k/ f( k$ M) d+ M: Y
来源:Haematologica. 2011.8.9.
/ ^# X8 g, ]" k% W# R j3 [Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML- {9 F2 G1 H: Q
therapies. Here is a report from Australia on 3 patients who went off Sprycel
2 a) e W" \, C0 S9 wafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
. h9 H5 g% V' s* iremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
# R! O8 C* [9 Cdoes 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
( r) B: i i% W6 ]% VGleevec and Sprycel was their second TKI so they had resistant disease. This is8 r7 ]" g6 C! y# Q. P
different from the stopping Gleevec trial in France which only targets patients
3 o, i+ o* W: U d A. Z/ K% D7 swho 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
, v6 z: s# @6 w& h) jresponse off Sprycel is sustained.. d( j$ K0 h& A. n- r
9 F8 l9 C( R2 L& N' OBest Wishes,9 e5 L2 m, ]$ ]3 z. W, \
Anjana
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$ X W4 \" k$ d0 h( V Y6 @# t% }4 wHaematologica. 2011 Aug 9. [Epub ahead of print]
! j. d" j# r+ v# j* xDurable complete molecular remission of chronic myeloid leukemia following' Z* }: y; }& W1 o. N) T
dasatinib cessation, despite adverse disease features.7 V. T/ j; _& y; n: p
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
8 } R; t! R! u. ySource
s! P/ [( G3 hAdelaide, Australia;
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Abstract
( f4 ^, G! _2 {" {6 o/ qPatients with chronic myeloid leukemia, treated with imatinib, who have a$ F( ?( V. w6 {5 N/ h; X
durable complete molecular response might remain in CMR after stopping( d$ @8 o" @ R: {
treatment. Previous reports of patients stopping treatment in complete molecular( P) l) D" G( Z2 W" E; Q/ g; T
response have included only patients with a good response to imatinib. We
4 g' S' ~$ Z# Bdescribe three patients with stable complete molecular response on dasatinib
d; y' n) G% P' z0 k+ q! Wtreatment following imatinib failure. Two of the three patients remain in
% R& \- Q0 P' i" R7 Acomplete molecular response more than 12 months after stopping dasatinib. In
7 R3 H* O# [1 a( z5 O! E; k- Qthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
' j5 F8 \& }1 C( V! R$ Ushow that the leukemic clone remains detectable, as we have previously shown in$ p1 J) ]) u1 Z7 D2 S" X! j+ @, b
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as- @! y: D K6 x
the emergence of clonal T cell populations, were observed both in one patient! r- ~; l" T4 i) E6 T- A( _+ F
who relapsed and in one patient in remission. Our results suggest that the3 ]- Z: }$ X& Y5 f" D* _
characteristics of complete molecular response on dasatinib treatment may be7 I! q# o" \+ ^* w% U' b% y2 L4 N% X
similar to that achieved with imatinib, at least in patients with adverse
, i$ q3 S) z8 n- K1 Idisease features.
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