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。4 K9 m, H3 n: e1 M6 Z8 y
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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/ \3 M$ l# A/ J, }& r$ |4 [3 d* H, t作者:来自澳大利亚
: F2 C$ W8 [9 O1 Z# ~2 Z6 @来源:Haematologica. 2011.8.9.5 n8 r ?3 ?1 Z5 }% Z3 h
Dear Group,+ S8 P5 }, l# ?3 O# l S( I! P+ J
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
7 o. X; r% `1 B9 ~. j/ N) jtherapies. Here is a report from Australia on 3 patients who went off Sprycel1 u- j; P; \( O! n
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients2 j2 e& R3 c9 f3 t, o8 }
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel/ ]" d q1 A' w4 O |, B
does spike up the immune system so I hope more reports come out on this issue.+ m( N5 v) ]; J7 c/ g
/ f! k. V8 Y% e" [The remarkable news about Sprycel cessation is that all 3 patients had failed- v) k! t; I) R; h
Gleevec and Sprycel was their second TKI so they had resistant disease. This is* @, B$ s+ o! a6 `& B! O
different from the stopping Gleevec trial in France which only targets patients/ p5 T) D8 s* r# ~" F' T( T1 |- E
who have done well on Gleevec.. c# m# A3 @. t" P8 ]0 K
3 |5 m c7 V* |Hopefully, the doctors will report on a larger study and long-term to see if the
& F2 V/ B" ? }+ ]6 \response off Sprycel is sustained.
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Best Wishes,
: s* `2 d9 H/ S" x' A/ i& d% `. SAnjana
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: h {/ k3 f7 a5 w/ D: V- ~Haematologica. 2011 Aug 9. [Epub ahead of print]) r$ x! q# p& a: G$ ?+ j! E; i5 z8 q
Durable complete molecular remission of chronic myeloid leukemia following* Y8 G* C. B+ K6 ~7 p8 ~# a: v
dasatinib cessation, despite adverse disease features.; y& u8 i& `* n
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
% K5 V/ r+ F8 j' t+ mSource
& U( N" K, S$ Y7 K: W( w; m0 O- jAdelaide, Australia;
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8 A* ~4 F4 @8 a+ Y7 }5 v3 EAbstract
/ R, P' K, u; bPatients with chronic myeloid leukemia, treated with imatinib, who have a' |6 Z0 _2 k" i4 j I
durable complete molecular response might remain in CMR after stopping
% i1 h9 C ~, \& d- }. T9 a" Btreatment. Previous reports of patients stopping treatment in complete molecular
& Z' b6 G+ }3 v) m/ Mresponse have included only patients with a good response to imatinib. We
4 @" R7 ~3 g+ O* O2 w5 ^+ Fdescribe three patients with stable complete molecular response on dasatinib
/ A8 P2 @% s* f4 wtreatment following imatinib failure. Two of the three patients remain in/ }3 P2 s$ N" N8 x
complete molecular response more than 12 months after stopping dasatinib. In
+ w0 y, A* c$ B. A e3 \( s! i! ^these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
8 m' T2 u$ V7 Q- x9 P$ B2 [: x& _show that the leukemic clone remains detectable, as we have previously shown in' m* v/ Q8 b' B
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as9 |4 C+ f3 S. C/ R$ s
the emergence of clonal T cell populations, were observed both in one patient
y( y' c& E4 cwho relapsed and in one patient in remission. Our results suggest that the, U r+ b, V. I$ ^
characteristics of complete molecular response on dasatinib treatment may be+ f2 C( |# n$ r4 j$ h7 S
similar to that achieved with imatinib, at least in patients with adverse
" a. r m" Z& K1 ddisease features.
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