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- I$ N: T% G2 m9 J1 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。1 n+ ?: Q' x9 R
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作者:来自澳大利亚
) z+ |; m' s9 O! g8 g来源:Haematologica. 2011.8.9.5 p0 O$ Q8 F( k
Dear Group,: E: I6 ]/ @, a1 D) _9 f
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML% p4 w6 l" x( l; Q
therapies. Here is a report from Australia on 3 patients who went off Sprycel
9 C. U2 C* k* l, D: e- Lafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients$ V" z1 G# R4 N; E4 Z/ P
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
. c1 s2 ?* w2 [1 M4 F! C+ idoes spike up the immune system so I hope more reports come out on this issue.% K, D4 G1 V3 e
5 {! Z: z5 w) b. W% y+ i* i. `
The remarkable news about Sprycel cessation is that all 3 patients had failed
' o N; ^2 }5 n+ Y0 JGleevec and Sprycel was their second TKI so they had resistant disease. This is8 u+ D, ~7 _+ t9 o( Q; `1 t* D; k
different from the stopping Gleevec trial in France which only targets patients7 W; C) M/ O$ H6 S) [
who have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the& ]+ z4 N$ _5 ~# |% G
response off Sprycel is sustained.) `! ?2 i; g& m
( O4 |+ M2 \4 [9 H* dBest Wishes,& F/ ?3 V8 y* T8 n
Anjana" D9 u/ }: U( M
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Haematologica. 2011 Aug 9. [Epub ahead of print]
$ H- A# n9 V( m2 }1 n8 ]7 {Durable complete molecular remission of chronic myeloid leukemia following
9 w# ]* N4 Z/ d# J% a$ R; Y, Ddasatinib cessation, despite adverse disease features.% R; L7 M" l- Q+ i% K1 d- h8 ?
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;) [/ u* s' k! E; }" E+ w. K2 o# L
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Abstract& D, U9 a% n# {4 n
Patients with chronic myeloid leukemia, treated with imatinib, who have a7 L( o4 e% j* {% O+ \, c
durable complete molecular response might remain in CMR after stopping
. [' A6 j t; l1 v) m& l$ R. ztreatment. Previous reports of patients stopping treatment in complete molecular: C$ ? @% z' ~9 H4 t" Y) v) ?
response have included only patients with a good response to imatinib. We/ a1 |4 n: e, F% l* ?
describe three patients with stable complete molecular response on dasatinib
c4 m. \# f$ s) C+ ~0 b- R& Y* `treatment following imatinib failure. Two of the three patients remain in9 j4 M8 C, r, z2 c2 p& X
complete molecular response more than 12 months after stopping dasatinib. In
# K+ C4 h. m! @these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to9 ?7 n4 a- {! J0 D. ~
show that the leukemic clone remains detectable, as we have previously shown in
/ F) k+ E. D% G. simatinib-treated patients. Dasatinib-associated immunological phenomena, such as* Y r c- y! Q( T# I; D
the emergence of clonal T cell populations, were observed both in one patient# P2 t/ ` c% k
who relapsed and in one patient in remission. Our results suggest that the
! v$ a9 q. X2 H9 |& b* {characteristics of complete molecular response on dasatinib treatment may be
3 W" \6 m) @" H$ S3 @5 e) Fsimilar to that achieved with imatinib, at least in patients with adverse
4 J% X8 \8 S3 Odisease features.& b; ?7 C8 A7 _3 V, y* a
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