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。3 u: M) S C/ Z) L
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 w+ o4 B' R' S% a, Q# I! c
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作者:来自澳大利亚
' V+ ]; k, m3 h1 Y- Q; t: I) ]来源:Haematologica. 2011.8.9.
0 ~6 {# C' G. E4 T Q* e& dDear Group," c7 z' H* b# u" R4 l
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
6 e0 j! {; f1 u$ |0 @5 |( Z% f% stherapies. Here is a report from Australia on 3 patients who went off Sprycel
8 ]$ L8 o1 Y8 |$ P% gafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
; C* p' [- i, i7 gremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel2 s% Q+ j* V# K0 y
does spike up the immune system so I hope more reports come out on this issue.
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) f c5 X/ _& f8 R% m/ H) @The remarkable news about Sprycel cessation is that all 3 patients had failed
; [1 s& d! m1 `& ?1 j$ DGleevec and Sprycel was their second TKI so they had resistant disease. This is
* u+ [! U" C+ S( ^, j zdifferent from the stopping Gleevec trial in France which only targets patients
6 e) h1 t% c3 Q( s& Owho have done well on Gleevec.
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+ C, A9 s7 V9 r' Z: a+ [( WHopefully, the doctors will report on a larger study and long-term to see if the( q$ k/ o- Q7 J1 L# f
response off Sprycel is sustained.
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Best Wishes,
: Q8 |$ X+ ~, D; O/ vAnjana. B0 d0 ]- V& n u! |" ~6 F+ m! ~6 M
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Haematologica. 2011 Aug 9. [Epub ahead of print]) D/ u0 ]* m9 U% d8 d) n6 l. S" B
Durable complete molecular remission of chronic myeloid leukemia following
" ?8 Q8 K. b+ g3 }dasatinib cessation, despite adverse disease features.
6 f# m# V O% J& m3 }Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;
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Abstract& g$ @4 @- y+ @
Patients with chronic myeloid leukemia, treated with imatinib, who have a% o+ c, t; d2 [
durable complete molecular response might remain in CMR after stopping
* N/ W" p: w+ z9 W9 o( _treatment. Previous reports of patients stopping treatment in complete molecular
2 v9 C0 L4 H7 B3 ?9 _1 y# D6 _response have included only patients with a good response to imatinib. We
1 ?$ x- r% z: B6 H) G+ k Z: \- Xdescribe three patients with stable complete molecular response on dasatinib# Y# A( p- B, i' O5 n; F
treatment following imatinib failure. Two of the three patients remain in7 k4 R5 |& j1 V
complete molecular response more than 12 months after stopping dasatinib. In1 {: S4 w' I& ]( C ~" a& }2 g; D
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to# i# G* B4 E' @1 P# v3 R
show that the leukemic clone remains detectable, as we have previously shown in* m0 B, ]8 p7 c! R# [3 U) A
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as$ }+ W% Z& z9 W
the emergence of clonal T cell populations, were observed both in one patient3 q' V, _. k5 m( ^; _. B4 N
who relapsed and in one patient in remission. Our results suggest that the
+ f, i, g P5 Gcharacteristics of complete molecular response on dasatinib treatment may be
) @$ W& \+ R) {& Vsimilar to that achieved with imatinib, at least in patients with adverse
/ y3 q: {2 N/ n$ ]disease features.
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