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。$ I7 h' h: H- I) o# \
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。/ n( \2 x6 i! m0 f4 K8 d
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作者:来自澳大利亚
! E( V% |8 Y! d% o6 u来源:Haematologica. 2011.8.9.
' F: ?6 p" y* q2 t, q, [1 g3 Q" WDear Group,
/ k% |* n: t6 b& Y" e8 K7 a. T) }4 O' d/ Z. \
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
?: @4 {3 Z# ntherapies. Here is a report from Australia on 3 patients who went off Sprycel3 p( s- F% T2 P O i. c9 M
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients; b9 g3 y `2 r% ~# ^, u+ y
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel V: X- `2 B7 @. U# H' h1 ^
does spike up the immune system so I hope more reports come out on this issue.4 y _2 n5 B( M4 C, m9 z
) q X* c9 Z( X$ l6 X6 N2 yThe remarkable news about Sprycel cessation is that all 3 patients had failed
5 E" b7 s8 o d7 i2 e' N: {0 [+ }Gleevec and Sprycel was their second TKI so they had resistant disease. This is1 B r6 I1 O. \
different from the stopping Gleevec trial in France which only targets patients
8 ^1 q; I5 x# i! o! J+ C( ]who have done well on Gleevec.& J) c X/ u3 a1 p. r# Q
: q/ a# Z) ^0 L% g
Hopefully, the doctors will report on a larger study and long-term to see if the( R, d. I) f. [$ t1 `
response off Sprycel is sustained.* b x8 z; _% ^9 x$ G
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Best Wishes,7 d$ f# o. z" p: G) f: J
Anjana
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5 a- ?. i# y# ?Haematologica. 2011 Aug 9. [Epub ahead of print]
; d. x5 t$ N4 b! qDurable complete molecular remission of chronic myeloid leukemia following- c9 X: Z3 v0 \, }8 `2 R1 R) a
dasatinib cessation, despite adverse disease features.+ r6 i P! M- F- M9 l+ q
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.) E, p( ^4 n; E R7 g5 }
Source
8 T% k% b1 e3 e) j. ?Adelaide, Australia;/ N: p# }2 \2 P8 [' D
$ z1 \. }) o/ X4 z$ o
Abstract2 x3 m; f9 K5 J7 \) Z
Patients with chronic myeloid leukemia, treated with imatinib, who have a
; V$ E* _% w* _2 ~7 B- [7 hdurable complete molecular response might remain in CMR after stopping1 a% j( T# O- u0 k; M3 h& e/ G4 E( r
treatment. Previous reports of patients stopping treatment in complete molecular, `; B5 J' V4 A0 |
response have included only patients with a good response to imatinib. We
6 }, b- ^3 N3 ~& k, Cdescribe three patients with stable complete molecular response on dasatinib. z+ K \* }' Y9 l
treatment following imatinib failure. Two of the three patients remain in* E8 }% q& x( B3 G. j: e5 R V0 _
complete molecular response more than 12 months after stopping dasatinib. In
. e |7 c8 G4 F4 nthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
. o" Q. a# J0 Z0 @1 z: }$ Ushow that the leukemic clone remains detectable, as we have previously shown in
g# X7 [' r5 _- e- O. M& n7 @imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
% d w+ p" n# A" T6 h$ t' nthe emergence of clonal T cell populations, were observed both in one patient) f$ p$ W3 R; q
who relapsed and in one patient in remission. Our results suggest that the
/ j6 V T; P( q8 dcharacteristics of complete molecular response on dasatinib treatment may be
! z) Z" J2 D; ]7 `similar to that achieved with imatinib, at least in patients with adverse
2 H2 b, u1 s9 Y3 edisease features.# M0 s' w$ M `. _- @# {
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