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。
; w" _* r; C+ U$ A% Z$ S! p 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。2 T' b8 c7 m) ]
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作者:来自澳大利亚
% f1 O! o; H% e, C. q- V. W" g2 [来源:Haematologica. 2011.8.9.# h- e) a, V, W
Dear Group,
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5 g d& g7 ?, ]9 i4 T8 nSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
1 u7 q" V8 ?& \4 `therapies. Here is a report from Australia on 3 patients who went off Sprycel
6 U4 M$ @/ M* J! S+ Dafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
0 T3 J) |( p- r ?! k3 T. dremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
! g2 k9 I7 P0 I3 n4 z- ?/ pdoes spike up the immune system so I hope more reports come out on this issue.
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/ |7 F1 y& _/ e/ [/ BThe remarkable news about Sprycel cessation is that all 3 patients had failed G+ }2 }0 x) j0 k; k
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
3 @3 k- `0 \5 odifferent from the stopping Gleevec trial in France which only targets patients( k& w1 J2 Q7 j I
who have done well on Gleevec.& S' i _3 Y) N: c; n
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Hopefully, the doctors will report on a larger study and long-term to see if the
6 @9 C) P% n2 uresponse off Sprycel is sustained.
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$ ?, H1 a0 F- v% A; ^! k5 G" vBest Wishes,* `! s6 g2 K* ^# r! h
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]# n5 X& q# B9 P+ L J
Durable complete molecular remission of chronic myeloid leukemia following* d9 h5 z& J- j" H$ w$ w
dasatinib cessation, despite adverse disease features.- \0 C) i0 d: V# e; ?
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.; O, i- @) v; M* C/ U
Source
+ j2 Q3 k+ p" _, [- a- P- L" `Adelaide, Australia;
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! Y6 N5 n6 E: w5 u4 m* BAbstract
8 @4 u3 @; S8 Z# L4 J) I3 zPatients with chronic myeloid leukemia, treated with imatinib, who have a$ q2 \7 |6 v8 Z+ N* P
durable complete molecular response might remain in CMR after stopping0 K' W7 U0 N) P5 c* e7 z; p
treatment. Previous reports of patients stopping treatment in complete molecular
2 _ a/ _, H1 b- P9 Bresponse have included only patients with a good response to imatinib. We' J. C% {7 @2 l y* h7 e
describe three patients with stable complete molecular response on dasatinib5 g7 Z& l! \6 ?/ G9 J
treatment following imatinib failure. Two of the three patients remain in' P8 q+ E) j; W; p: J$ _$ O
complete molecular response more than 12 months after stopping dasatinib. In
* g% K! s; L" }7 A, Athese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
R. b* L+ T# g* }# I0 u1 Ishow that the leukemic clone remains detectable, as we have previously shown in; D4 N( m0 {$ K/ s
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
$ M) v( q" }0 x7 }6 L* Dthe emergence of clonal T cell populations, were observed both in one patient( B2 \" q2 r, A* L i7 u
who relapsed and in one patient in remission. Our results suggest that the
V" m/ ]# h4 s2 u5 `$ U* ~9 @characteristics of complete molecular response on dasatinib treatment may be( ]0 U/ w+ x6 V' B* ]" P2 J
similar to that achieved with imatinib, at least in patients with adverse" T/ ^# d Q! b% c
disease features.
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