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。
& g( A! |; y4 } 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。# b, U' K* G K) P9 m# H3 v6 D
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作者:来自澳大利亚" h2 q8 [* I0 z# i3 U
来源:Haematologica. 2011.8.9.
+ o3 s! o# C7 g& k& z2 CDear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
. W/ T6 m9 C3 \% _1 l; B8 ftherapies. Here is a report from Australia on 3 patients who went off Sprycel# j1 E2 z) Q8 w$ _
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
4 g1 ~9 |. w$ N+ r3 U5 s+ A$ ]remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
9 f+ ` X+ }# s3 Q. ddoes spike up the immune system so I hope more reports come out on this issue.8 [+ R5 _& _) [5 Q! h# d6 @' \- s
1 c: K" N, t# Q2 [The remarkable news about Sprycel cessation is that all 3 patients had failed/ f, }" p0 n, `! c4 h. M' p
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
4 L/ B0 E- ]3 d: u* O) @$ F9 P2 zdifferent from the stopping Gleevec trial in France which only targets patients
5 g8 G' e* N; W3 |! q) ^+ |& V) D0 Kwho 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
% |$ C% r& c* @$ l% Vresponse off Sprycel is sustained.) n/ X5 a: J" ?, j% M, A+ B# l
* W* q ~/ n( x+ PBest Wishes,- [* Z' @% U6 a8 ^* I, o% {3 N
Anjana, n- [7 C1 q1 I5 I- A9 B
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/ r, f8 n* o. h p+ f+ s6 p. f4 t1 \Haematologica. 2011 Aug 9. [Epub ahead of print]
8 ^" O- H- W" ?; z* l( yDurable complete molecular remission of chronic myeloid leukemia following# e& Z3 m7 ~: {9 a8 E9 L
dasatinib cessation, despite adverse disease features.0 A; d1 J8 X( |5 M7 ]2 `
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.3 M9 k7 z3 |- x/ R% Z6 h
Source% }/ U3 M: D& P* N
Adelaide, Australia;
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Abstract' R* O2 W( a$ ^2 C- H
Patients with chronic myeloid leukemia, treated with imatinib, who have a. Z7 f3 D) ^7 a4 _: ^( e
durable complete molecular response might remain in CMR after stopping
! E) W! c& _: Ltreatment. Previous reports of patients stopping treatment in complete molecular
8 e2 ?# o2 p6 uresponse have included only patients with a good response to imatinib. We
6 A& `9 |5 v @- _: I. I, Ddescribe three patients with stable complete molecular response on dasatinib; J; R2 z( i. p9 R: d: Z
treatment following imatinib failure. Two of the three patients remain in
: X& p) T8 t' m6 Qcomplete molecular response more than 12 months after stopping dasatinib. In2 m. x9 y* @# e; s: D% k; \
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
4 V6 D$ l' D4 y9 p7 Jshow that the leukemic clone remains detectable, as we have previously shown in1 R7 ^8 W0 u$ o, S* j' }5 E
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as* W. A# K; @/ \* O5 o
the emergence of clonal T cell populations, were observed both in one patient
4 p" o2 J" T7 @( M1 K$ rwho relapsed and in one patient in remission. Our results suggest that the& e! Y6 |- y2 ~8 S
characteristics of complete molecular response on dasatinib treatment may be
( N) r0 [( y c0 [3 ]3 Gsimilar to that achieved with imatinib, at least in patients with adverse: U6 i/ J% Z/ f3 Q) i4 L) l
disease features.
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