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。$ J$ \6 b2 ~% V: c$ A. }
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。' `4 w% x& i/ k5 K% u
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作者:来自澳大利亚' b* U5 l1 U) i s6 l ~3 X
来源:Haematologica. 2011.8.9.7 f# P; z3 [/ c7 s& K
Dear Group,
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; P5 B) y# s+ C4 V+ Q* U0 f( v3 iSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML6 A) t5 \+ X0 {& o1 |) I
therapies. Here is a report from Australia on 3 patients who went off Sprycel
7 X2 h1 H8 o# v1 eafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
! E$ O! J- i5 Sremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
" T$ R( v/ T. Bdoes spike up the immune system so I hope more reports come out on this issue.+ x* @1 J' e' D% G/ U
5 b9 J. b: {1 F$ M
The remarkable news about Sprycel cessation is that all 3 patients had failed" R) J6 F# p2 ~
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
& U/ R% s! r9 j3 _! Y( A. rdifferent from the stopping Gleevec trial in France which only targets patients# x; Y: h* x4 d/ n6 a W* \9 O
who have done well on Gleevec.; M5 g- H E* {: r
5 \- V/ f5 k9 J4 xHopefully, the doctors will report on a larger study and long-term to see if the |* Q- H, [: m% j1 ? {
response off Sprycel is sustained.
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Best Wishes,/ n" C7 n3 b! ^; K# ?0 q
Anjana# w+ j3 f/ `% z, {) \& _
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3 w, ?# {1 q w. }8 lHaematologica. 2011 Aug 9. [Epub ahead of print]
* d6 j# `( ?0 t( O+ C1 BDurable complete molecular remission of chronic myeloid leukemia following
2 u: _, o5 s$ `+ M4 j1 Bdasatinib cessation, despite adverse disease features.5 t$ n* a" f1 z( ^9 `# W5 n) y
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.% P8 O7 h6 \$ I- g- H6 O- A
Source: m* X3 G$ m+ I' Y% M' p: G
Adelaide, Australia;
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Abstract" A: d! k- f' m
Patients with chronic myeloid leukemia, treated with imatinib, who have a8 z- R" S: u5 y! n, o
durable complete molecular response might remain in CMR after stopping
5 E9 r8 I/ u( O) Dtreatment. Previous reports of patients stopping treatment in complete molecular3 l( ^1 g, d2 ^0 v; f
response have included only patients with a good response to imatinib. We
0 z" ?3 I7 |! jdescribe three patients with stable complete molecular response on dasatinib! u6 m! s" y. v2 v$ e; G* q, {. C
treatment following imatinib failure. Two of the three patients remain in. T# e) r+ s$ y7 L1 @! t) d
complete molecular response more than 12 months after stopping dasatinib. In
; Y6 q' e4 C6 B* i7 l( s' ythese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to1 a- y5 ?6 g/ f) z3 F
show that the leukemic clone remains detectable, as we have previously shown in- h, T2 a9 C5 K3 I& l% m7 _
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as5 A1 S i% ?" ^5 P
the emergence of clonal T cell populations, were observed both in one patient
7 [' q3 ?5 s4 [who relapsed and in one patient in remission. Our results suggest that the7 Q4 V$ r8 |8 ~ y0 s& f
characteristics of complete molecular response on dasatinib treatment may be
) J4 b! x( N3 ]+ ~! v1 b+ b( {similar to that achieved with imatinib, at least in patients with adverse. v: K0 V8 R t6 I P3 o8 e7 R% l
disease features.
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