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。9 e# {2 z7 z+ ]7 d
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 C0 N4 {1 w7 \( p6 c' q
# Q/ F9 y4 S( N9 h' s0 q0 `, O作者:来自澳大利亚
( l: C% }6 r: z/ u# s6 |6 p: ]4 x- u来源:Haematologica. 2011.8.9.
f, t& \& i- w5 G. G3 fDear Group,3 x7 b9 m, p0 ^* T
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML8 o o! c" ]7 r6 a7 d6 U& d' h
therapies. Here is a report from Australia on 3 patients who went off Sprycel! o# @! Q8 B- v& S: f! g. u6 `
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
: R1 B0 A8 {0 x8 T, f8 X1 Z4 Mremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel4 K# Z5 z) f4 E$ I, m) p
does spike up the immune system so I hope more reports come out on this issue.
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6 M3 i: r/ E9 {: x! G8 F( I' R/ _The remarkable news about Sprycel cessation is that all 3 patients had failed
5 i# C& C. R9 u6 cGleevec and Sprycel was their second TKI so they had resistant disease. This is
% ~5 h& e3 C$ E' ]+ R$ Y% O& N: o! }different from the stopping Gleevec trial in France which only targets patients
/ E9 T4 G) h: R; y6 w9 owho 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% q# J- v, e" x, x1 Y
response off Sprycel is sustained.
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& ^/ m; P4 U' {! o( b) ZBest Wishes,
$ T+ l; O p+ V2 W! _# k* SAnjana1 Q3 W: I5 H. u( \* J5 K7 y
; L, V. Z9 B8 h& a& S3 T
4 S- ?) ]8 j5 w l& J* R Y2 o7 _6 o6 x8 O8 `
Haematologica. 2011 Aug 9. [Epub ahead of print]
: X& U( h7 F$ o: V& C- ]' JDurable complete molecular remission of chronic myeloid leukemia following
- z- B* D/ e, q i p2 e/ v- E3 \dasatinib cessation, despite adverse disease features. B6 g1 Q: i4 r
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.( E/ k& d9 G+ H3 {3 i
Source6 V8 h" \ K; b3 U1 k, v% J7 Z: H
Adelaide, Australia;9 k5 ]: D) W b+ M* s7 E7 W3 s7 t
+ m* A2 G% x% [$ V' }
Abstract
6 F4 I: g. d% J# I$ TPatients with chronic myeloid leukemia, treated with imatinib, who have a
- U( [3 ]% J; B1 T. C8 j- Odurable complete molecular response might remain in CMR after stopping
- d% A9 v" E* _& v& u! k; P( Btreatment. Previous reports of patients stopping treatment in complete molecular
7 n$ s' {% m: ?3 R1 n. Jresponse have included only patients with a good response to imatinib. We( n- [% [, E+ B% z3 K, E2 Y! ~
describe three patients with stable complete molecular response on dasatinib: f/ [6 C3 C1 M( j5 l
treatment following imatinib failure. Two of the three patients remain in% y4 s4 w+ k4 Y
complete molecular response more than 12 months after stopping dasatinib. In6 D; S* ?1 B" L
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
`) A+ v7 w; k8 H3 k, ~show that the leukemic clone remains detectable, as we have previously shown in
& m$ c% g; ?2 ^ K4 ~) b9 S5 Wimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
( [0 N$ A' R! X1 C5 [: Ethe emergence of clonal T cell populations, were observed both in one patient E/ g( L; }6 ?( z& U
who relapsed and in one patient in remission. Our results suggest that the
' `1 h, ^6 L/ @7 d! ?2 y# k/ mcharacteristics of complete molecular response on dasatinib treatment may be
+ Q, I: n- ^8 M' Ysimilar to that achieved with imatinib, at least in patients with adverse
5 N I/ W( ]# p0 e1 c ^disease features.
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