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。
* L' E0 M; F. `8 t, q" y8 x) e 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。9 Y1 ]5 w* V& ]7 P
1 g3 i& F' H) D: d( z3 _作者:来自澳大利亚
# a) e6 f$ I( _# M8 {2 ?来源:Haematologica. 2011.8.9.; T) D: \" x, d
Dear Group,% ?/ {' a; Z' [0 X6 K
- }8 b* c1 Y1 J S& e' w [Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML% w. j3 |/ K; \. |+ p( a
therapies. Here is a report from Australia on 3 patients who went off Sprycel5 I, q% P( v) J
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients j5 `3 o, J5 Y0 z
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
* |: {& ?$ } F( g0 x, ]does 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
6 H0 Z1 `$ G. \1 [; L, O! h+ BGleevec and Sprycel was their second TKI so they had resistant disease. This is
6 r4 {9 z0 X/ z, ]8 [different from the stopping Gleevec trial in France which only targets patients
3 a9 j* D6 M% t+ Z2 twho have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the0 E4 r7 a- e7 X7 n5 A
response off Sprycel is sustained.6 C! u: J* ]7 z7 g( v5 h& Q
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Best Wishes,' a* T8 J9 m$ ]3 k
Anjana/ P5 v+ h7 h2 _
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Haematologica. 2011 Aug 9. [Epub ahead of print] E0 K6 }* o/ t; U- ~
Durable complete molecular remission of chronic myeloid leukemia following
# n# z& n3 |4 B! ?, b- _! r; Ydasatinib cessation, despite adverse disease features./ i/ i7 I* m0 `) M4 g2 s
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
3 A" X' t2 S7 m+ t7 USource
$ m D" f3 X3 i5 L, I* fAdelaide, Australia;( p1 ~: v& u8 W. h
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Abstract3 i' e/ a4 k* N k) C
Patients with chronic myeloid leukemia, treated with imatinib, who have a w5 G5 A$ J6 |) h, ~3 z$ ~3 h- C
durable complete molecular response might remain in CMR after stopping
* H5 p" G5 n& w% c) ^% o# Utreatment. Previous reports of patients stopping treatment in complete molecular8 z1 Y* D/ _4 a, X
response have included only patients with a good response to imatinib. We) [& k( O5 h9 G- n# C9 T" T* K7 s
describe three patients with stable complete molecular response on dasatinib) Q) m! Y( t8 k! q5 Z0 u! C
treatment following imatinib failure. Two of the three patients remain in
2 M* N$ W7 E2 y( a2 rcomplete molecular response more than 12 months after stopping dasatinib. In
$ k" ~0 C1 r Rthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to4 [" p0 E! }7 G' [
show that the leukemic clone remains detectable, as we have previously shown in
! s7 G# k- o) ]: G* x: H- ^imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
) A u1 b9 u8 J& w* S7 M) O4 Z2 uthe emergence of clonal T cell populations, were observed both in one patient/ T9 x! p2 o; M8 a4 q$ K
who relapsed and in one patient in remission. Our results suggest that the. n8 C8 ]+ Y; T" z2 z
characteristics of complete molecular response on dasatinib treatment may be v1 W* p7 w+ N$ z6 A
similar to that achieved with imatinib, at least in patients with adverse9 N2 r$ I1 R- ?' t
disease features.
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