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 l H [; h" w- `" W9 l6 i% ?
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8 G7 u' S# i u' ]/ e8 F
来源:Haematologica. 2011.8.9.3 p" W( c% j" p y5 Z9 x
Dear Group,: @7 l6 r* r: h6 \( N# ^
) G0 t5 c" q6 }9 v5 k d' y/ j5 R' JSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML' A5 H3 V* g. @) F( o
therapies. Here is a report from Australia on 3 patients who went off Sprycel6 x+ d1 L- p, A! X, q2 a7 D0 E
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients$ U5 A* f1 y( |" Z. F5 u$ e" G
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel9 Q& p) K, y: e
does spike up the immune system so I hope more reports come out on this issue.
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: S0 L2 _( c( X4 [; a7 t( oThe remarkable news about Sprycel cessation is that all 3 patients had failed
$ N6 Q! f9 ^1 pGleevec and Sprycel was their second TKI so they had resistant disease. This is
! d6 i% t1 e# o+ L& Tdifferent from the stopping Gleevec trial in France which only targets patients
1 ?2 j( D: b7 K! Uwho have done well on Gleevec.3 d1 g* L6 a5 x
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Hopefully, the doctors will report on a larger study and long-term to see if the
: v [7 f% a8 c" z8 A1 a0 K: L3 Wresponse off Sprycel is sustained.
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7 |/ t9 u6 h$ B( B& ]/ G# ^Best Wishes,
3 F4 Y" z& ]3 k8 \' P; Z% aAnjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]/ V6 {( F( F. z5 U# @
Durable complete molecular remission of chronic myeloid leukemia following
8 d) h. u" p8 E9 {, i1 Jdasatinib cessation, despite adverse disease features.! a9 s3 X8 l6 B2 T0 _: j* C& q. r1 E
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.. ^" r% @; N+ X6 P; F' \9 l" K' o* {* P
Source' N; ?5 j! a n `9 b+ S1 @
Adelaide, Australia;
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& D" U" E3 |/ [ t# FAbstract3 S0 y7 g3 f! A. N/ x; X( e$ v
Patients with chronic myeloid leukemia, treated with imatinib, who have a4 I/ J' y+ R d4 f* M. D0 H
durable complete molecular response might remain in CMR after stopping
% Z/ ?8 N+ j2 ]9 r1 ]& \0 ]& h$ gtreatment. Previous reports of patients stopping treatment in complete molecular
8 U/ T: L- A/ ~8 e- O' t5 hresponse have included only patients with a good response to imatinib. We: Y' S2 [3 N! o4 Z6 O' K* R
describe three patients with stable complete molecular response on dasatinib
% l! `1 `1 E' g1 \# F/ h; Ltreatment following imatinib failure. Two of the three patients remain in2 k$ {; f6 a: M& t, ]" h
complete molecular response more than 12 months after stopping dasatinib. In
3 B! l2 D1 Q W5 }2 j. L: x* H' tthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to- U# e) P/ N/ N# S c
show that the leukemic clone remains detectable, as we have previously shown in+ X, @4 d9 H' x h/ d! r
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
; L3 p, [0 n* y3 i- ithe emergence of clonal T cell populations, were observed both in one patient) z( ~% }8 Q8 @ I B
who relapsed and in one patient in remission. Our results suggest that the9 ^/ t$ d% V2 `4 i# r7 S
characteristics of complete molecular response on dasatinib treatment may be2 y3 }: k5 ?) T" _ R
similar to that achieved with imatinib, at least in patients with adverse
9 p$ d1 Y5 w* |disease features.
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