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。& T. `; n0 Z& b& T9 G! 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。
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2 W" n/ V: r9 s4 z5 V% ?( r作者:来自澳大利亚
" M3 T3 G: E: R来源:Haematologica. 2011.8.9.5 X" W) F1 `- e6 @( }1 D& a, G
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
9 v& y! u+ P9 a' t: ttherapies. Here is a report from Australia on 3 patients who went off Sprycel2 |# }( X4 k5 S/ `, J) _
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients5 G+ I8 F% E/ q5 k
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel9 r8 P+ n" a! l7 C' w
does spike up the immune system so I hope more reports come out on this issue.
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4 }; R5 e$ \& E4 s7 ~! P5 IThe remarkable news about Sprycel cessation is that all 3 patients had failed$ b s0 q" }& u
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
2 W) h/ N; [3 hdifferent from the stopping Gleevec trial in France which only targets patients
" _; G. s& S$ p1 ^% Q l. G" H2 swho have done well on Gleevec.0 y7 H7 p# v' v! K9 C
. _, J$ o- d6 x& G$ iHopefully, the doctors will report on a larger study and long-term to see if the0 t' E8 }7 U5 o1 K" l
response off Sprycel is sustained.
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5 i; X+ [, C/ f# h$ QBest Wishes,3 P: w8 ?+ L4 t
Anjana
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% y. V' m: ~* T+ x$ J6 a' `9 }Haematologica. 2011 Aug 9. [Epub ahead of print]
+ B% O+ h$ N4 ?% }6 FDurable complete molecular remission of chronic myeloid leukemia following- @1 g& P# H7 x# T
dasatinib cessation, despite adverse disease features.; o3 i3 B; W! {5 x- n) D
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.) h4 [3 n2 E' c m5 k/ Z. D! W5 C; b
Source; F, v, g8 h& o8 `. l$ }
Adelaide, Australia;
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9 q5 V- ?4 n2 pAbstract C% V2 T$ z7 ?8 X# ~
Patients with chronic myeloid leukemia, treated with imatinib, who have a
3 {0 ^: _! E! x: t. N( e6 Kdurable complete molecular response might remain in CMR after stopping& h( j+ q" e- O& v
treatment. Previous reports of patients stopping treatment in complete molecular: r* t: A5 n+ S3 q! `8 `
response have included only patients with a good response to imatinib. We
* W" q( a; ^. h4 f6 Ddescribe three patients with stable complete molecular response on dasatinib
# N* {0 U8 h) a- x, r+ S/ Jtreatment following imatinib failure. Two of the three patients remain in) f& ]: y- M$ T7 X# Y$ `% L2 z) h: i
complete molecular response more than 12 months after stopping dasatinib. In9 {. r: O6 I1 j, D
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to2 m1 Y8 r# \# }; N7 c3 A7 o1 c" f
show that the leukemic clone remains detectable, as we have previously shown in
( s& t6 O5 A' a$ m$ \) A- @/ Simatinib-treated patients. Dasatinib-associated immunological phenomena, such as
9 H5 @6 D1 `* k! X& w% ^* Nthe emergence of clonal T cell populations, were observed both in one patient
7 w8 o2 Q) e- mwho relapsed and in one patient in remission. Our results suggest that the
( R, g2 W" c: E, \8 A: {characteristics of complete molecular response on dasatinib treatment may be
* P) h! i9 o C/ A: b5 Fsimilar to that achieved with imatinib, at least in patients with adverse4 o, Y. [: ~- K. `0 D6 {5 y3 h% y
disease features.
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