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。; k, o; V1 D( z" J# |2 m9 O/ V
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。3 J$ z# ]0 Z7 ?. B3 N
0 s9 A' k2 q# g! q* t& { y作者:来自澳大利亚
, i, Z! _( |" ~% k6 P; m0 N来源:Haematologica. 2011.8.9.8 y: T5 z# l* S1 b% X$ `5 u
Dear Group,/ n( Z% ]+ P- @6 R7 ?8 w5 z
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
4 ?( R5 ^# A* R& m, ytherapies. Here is a report from Australia on 3 patients who went off Sprycel
& ^: A1 f4 F5 |after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients7 R j( r, r( i1 S
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
5 m# }! x2 t: r; E$ |6 g3 _7 Gdoes spike up the immune system so I hope more reports come out on this issue.! w# ]- ~. g4 ` t" C+ ?( a
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The remarkable news about Sprycel cessation is that all 3 patients had failed
$ M: U% a! d. ~2 oGleevec and Sprycel was their second TKI so they had resistant disease. This is
2 p$ V) N3 N/ x! j* V( s1 ydifferent from the stopping Gleevec trial in France which only targets patients
# T9 m( W, ]) L: ]- cwho 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! `9 a# M% D% c$ @# ^1 ?. F
response off Sprycel is sustained.: G4 W9 Z; C) N+ W7 ]
; H: m) H3 ^5 cBest Wishes,3 j6 s! T1 I0 }( a# N
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print] H5 G8 k& P9 |/ s7 r% N
Durable complete molecular remission of chronic myeloid leukemia following
) p0 p) w8 I# G: s( adasatinib cessation, despite adverse disease features.
# [: g v6 x4 Q! Y9 sRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
) l/ X1 O0 N' C/ _Source
% `2 S' w. n# w' f wAdelaide, Australia;
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Abstract
) [+ e' [ o8 }9 q1 \3 z2 WPatients with chronic myeloid leukemia, treated with imatinib, who have a
: v" B; X: `( j8 M: ?0 [" Odurable complete molecular response might remain in CMR after stopping
6 T+ q4 X3 m2 p6 T5 p+ I+ _treatment. Previous reports of patients stopping treatment in complete molecular1 v; C. W! M5 x, ^0 K; j3 A
response have included only patients with a good response to imatinib. We
: L# g* B1 `5 y! J0 n6 {describe three patients with stable complete molecular response on dasatinib. z& a6 |5 P) }+ c1 Q
treatment following imatinib failure. Two of the three patients remain in
$ h) |) s! y" M, S- n8 a7 N2 x' Ocomplete molecular response more than 12 months after stopping dasatinib. In0 q+ T1 _$ V Q6 j9 ~) h1 Y: N% Z
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to& _) O: e) I' h3 m8 M% z( m
show that the leukemic clone remains detectable, as we have previously shown in! }4 v* Q# R! Y* i
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
- I! L( @) f6 W7 d, l; y( w* ]8 Ethe emergence of clonal T cell populations, were observed both in one patient
8 v4 r+ G: d* d9 Y9 \4 C- Dwho relapsed and in one patient in remission. Our results suggest that the( z! W5 M: E3 Z' n+ [- L/ D
characteristics of complete molecular response on dasatinib treatment may be
& N7 a8 f5 N" p& o, `' Q5 _similar to that achieved with imatinib, at least in patients with adverse
. y' z: V! R* ]; Rdisease features.
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