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。2 o2 A! }3 Z# o% t0 F* W8 Y
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。8 W* i% X, A1 f4 u% \' X2 j
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作者:来自澳大利亚3 C5 o( B( J5 r5 e
来源:Haematologica. 2011.8.9.
) x# f5 G. ?- }: a5 jDear Group,+ m k( q: X$ o/ U/ ~# x0 z
% V7 v" |/ A: NSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML* j( r1 a4 t. J' o2 j; w
therapies. Here is a report from Australia on 3 patients who went off Sprycel
9 S* U6 Z9 F& E' A. ~- qafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients4 p; w2 n/ o$ l4 s7 ]
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel7 C: Z% I, t9 `- I1 v* d9 o
does spike up the immune system so I hope more reports come out on this issue.
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9 R" Z0 U; t% X- }+ L9 u( C( [ zThe remarkable news about Sprycel cessation is that all 3 patients had failed
' F9 X/ q+ `% s4 D; I8 qGleevec and Sprycel was their second TKI so they had resistant disease. This is) y: w: H- Y, C
different from the stopping Gleevec trial in France which only targets patients
6 F- [" ?$ G; H! u) v- Jwho have done well on Gleevec.
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: B, U" U; H6 `7 w; B8 {6 ^, PHopefully, the doctors will report on a larger study and long-term to see if the
1 D7 K& C$ g9 qresponse off Sprycel is sustained.
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Best Wishes,# W# B2 q( @! v) V% @
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]! @; k4 l, f* K* l
Durable complete molecular remission of chronic myeloid leukemia following
! y. z e- D' H, `8 @% S4 R; kdasatinib cessation, despite adverse disease features.+ J I$ H: ]1 p9 G+ ? ^1 E
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
# W7 H5 O- Y$ K; d) \4 M uSource
9 ]5 g- s! V4 H, qAdelaide, Australia;
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+ z p/ q3 u8 K6 u% qAbstract
0 Y U: D$ Y1 y- D2 zPatients with chronic myeloid leukemia, treated with imatinib, who have a
# P7 |4 ^ U2 x& d1 D$ l1 y+ R" vdurable complete molecular response might remain in CMR after stopping
0 a- i+ T; I% ]9 }treatment. Previous reports of patients stopping treatment in complete molecular$ G) ?2 u' w o7 z/ s# I! e
response have included only patients with a good response to imatinib. We5 e+ U! q5 u7 x' K- h
describe three patients with stable complete molecular response on dasatinib: l; A& C5 q5 Y H
treatment following imatinib failure. Two of the three patients remain in
3 d$ K" U- j: \; \complete molecular response more than 12 months after stopping dasatinib. In9 }4 _' r1 m7 K# P9 }6 r
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
# I2 }' `4 W* _' h9 Y2 ]7 ^show that the leukemic clone remains detectable, as we have previously shown in, p5 a( [, S: _: v1 p
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
4 x6 C; f, f; o1 z5 [; {the emergence of clonal T cell populations, were observed both in one patient
1 W) q( }, T& Pwho relapsed and in one patient in remission. Our results suggest that the3 R. m1 {4 O [' }/ y! t# ?
characteristics of complete molecular response on dasatinib treatment may be
# W8 c7 \$ W W0 qsimilar to that achieved with imatinib, at least in patients with adverse; j& ?+ U8 ?2 W9 }8 V7 M
disease features.
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