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。; @4 t7 f4 O) t( F+ R) 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
! C, o7 Q2 r+ {3 V来源:Haematologica. 2011.8.9.; t; p. B% ]) O% i
Dear Group,* _ Y- \( {2 V: g' d! Y( [
- p, v2 p5 f q( }2 X( Z8 ESome of you are on Dasatinib (Sprycel) and we wish to give news on all CML( l7 [1 g% t7 k* w. J2 n. v4 u" e
therapies. Here is a report from Australia on 3 patients who went off Sprycel9 H1 f+ ]5 D) ~5 T
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients9 e3 }3 |" B3 N. b% k+ f
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
7 t- j1 r; y& A! ]% I3 }6 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
) a1 I- W d2 f( j; lGleevec and Sprycel was their second TKI so they had resistant disease. This is+ X* F3 ?6 T: H
different from the stopping Gleevec trial in France which only targets patients
; T2 n" ?1 b3 t/ H9 q. }who have done well on Gleevec.
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& B/ K+ A" Y) y# h' A. oHopefully, the doctors will report on a larger study and long-term to see if the! G6 m0 O! h& c" Y2 p' e! V
response off Sprycel is sustained.. z/ z/ q' i3 |$ i
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Best Wishes,: j% t4 t1 `3 }5 ~% a1 n
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]
6 j( f3 ?) v2 N! h* m0 u; qDurable complete molecular remission of chronic myeloid leukemia following. U1 T" `6 e' I8 j {( ^
dasatinib cessation, despite adverse disease features.0 ?+ J2 E/ z( D0 _) g @4 a
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;
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+ ~6 B. I( i+ Y! R9 d# m& Y1 U; t- SAbstract
1 G, a8 Q1 [0 c& p. J) m2 ]Patients with chronic myeloid leukemia, treated with imatinib, who have a/ M! l8 p0 }. b, J
durable complete molecular response might remain in CMR after stopping: @( \* `# v% O+ r. i1 n/ Z/ v9 W
treatment. Previous reports of patients stopping treatment in complete molecular
# D! v( v' A8 eresponse have included only patients with a good response to imatinib. We
6 j* B! J6 U7 K" K! T& Cdescribe three patients with stable complete molecular response on dasatinib
% s5 n0 W7 A) L7 h; {. Utreatment following imatinib failure. Two of the three patients remain in/ m( d& g) @& b' T% C
complete molecular response more than 12 months after stopping dasatinib. In
! o$ a6 I& S1 L) ]; ~these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
2 z5 l9 a% Q" r ]8 k, T6 Ashow that the leukemic clone remains detectable, as we have previously shown in
# r* y( P9 Q, `( n4 P# P1 Pimatinib-treated patients. Dasatinib-associated immunological phenomena, such as4 A! F* x+ m* u' I5 C: U) \3 i S
the emergence of clonal T cell populations, were observed both in one patient6 Z- t7 f. q7 U9 j) I9 N1 E- u
who relapsed and in one patient in remission. Our results suggest that the
7 I2 q! Q) B. ucharacteristics of complete molecular response on dasatinib treatment may be
1 `& q9 m: A0 B. k1 @% |- o/ A# @0 [6 Hsimilar to that achieved with imatinib, at least in patients with adverse, s# P5 {4 J! G$ [4 K7 G
disease features.
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