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。
; V* r. A z. o+ H! Q& c T$ B9 T 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。% m) x% t# X, f% u' s H
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作者:来自澳大利亚
2 f) e' h6 {5 @4 f6 C' ~& d0 r来源:Haematologica. 2011.8.9." V/ M# ?2 a+ [2 X; R
Dear Group,0 ]/ g9 C4 V* G C, Z
/ o0 n5 R) |) d W; ?8 [ @3 N* NSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML( h2 L2 o, {% K
therapies. Here is a report from Australia on 3 patients who went off Sprycel$ ]4 V, l! ^4 A3 g+ p+ m% K3 J
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
3 ^ A" V# z& n, ?; z& Sremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
) O2 ~2 p* A2 H Z, x0 M$ ?8 G7 L' wdoes spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed' H, d) ~+ `) `; K: }9 t. u
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
' L, z2 R. R5 o& b5 I6 \different from the stopping Gleevec trial in France which only targets patients
7 _2 c7 {, x3 o) ^5 vwho have done well on Gleevec.
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/ u3 {4 l$ Q7 {' k6 tHopefully, the doctors will report on a larger study and long-term to see if the
. R$ } }3 N2 \7 ^0 J1 s3 yresponse off Sprycel is sustained.' Q) y) I L& A. l) _
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Best Wishes,
5 x$ t$ U2 S2 @4 wAnjana0 s& t$ F1 y9 |; N7 l
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Haematologica. 2011 Aug 9. [Epub ahead of print], J. i1 u+ l S3 d; u3 z/ k! D
Durable complete molecular remission of chronic myeloid leukemia following
. X9 r2 e1 \4 t$ S: P& g3 G7 Udasatinib cessation, despite adverse disease features.$ V% ~% X& J! R V* f# H
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
2 h2 ~; D& p0 ?( `# `6 y6 PSource
% R+ d: M( r$ HAdelaide, Australia;% ~) W P" x% h
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Abstract/ t0 {" j) C) ]. r6 X- t
Patients with chronic myeloid leukemia, treated with imatinib, who have a
% a# f3 A- v7 z6 n. {4 udurable complete molecular response might remain in CMR after stopping
7 o% J- {% C7 d6 j1 @treatment. Previous reports of patients stopping treatment in complete molecular5 Z4 B7 T0 t0 K1 |
response have included only patients with a good response to imatinib. We
, @3 c' M; ?& x% Ndescribe three patients with stable complete molecular response on dasatinib
* P0 \$ L7 y! ^7 u6 S8 d% w1 Htreatment following imatinib failure. Two of the three patients remain in7 F/ n4 p+ o8 o$ w$ M4 Y. _5 P' M3 m
complete molecular response more than 12 months after stopping dasatinib. In' Y; E2 L3 ]+ Z9 N" a
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
# A) }5 r/ B* Y! G8 l; x; Nshow that the leukemic clone remains detectable, as we have previously shown in
8 u7 V8 I8 N+ Z% eimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
1 \: \; Q( s$ ^the emergence of clonal T cell populations, were observed both in one patient
( w3 d5 n/ s4 X7 N. dwho relapsed and in one patient in remission. Our results suggest that the
# u3 h$ V5 C* f% M, Icharacteristics of complete molecular response on dasatinib treatment may be% |9 |5 [! Q( B9 `8 r
similar to that achieved with imatinib, at least in patients with adverse" P, ^$ s5 E0 i$ Z2 z! ~
disease features.+ Q) a3 z: z; F- C8 e! l4 E1 e& s1 @
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