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% u3 Y5 F: Q7 n 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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作者:来自澳大利亚
7 _% V8 ~ t' \% b来源:Haematologica. 2011.8.9.0 f, U- _. t- o' e0 v, R
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
" a% j' V7 C* o$ i4 f& c. K1 stherapies. Here is a report from Australia on 3 patients who went off Sprycel* t6 i( u8 k6 Q& J) U6 G4 D
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients; M2 j' Q) I3 E4 V2 {
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
5 c0 C* b' G( a; e& F: T D5 zdoes spike up the immune system so I hope more reports come out on this issue.; g3 |9 Z' P# k* P0 N
9 e o7 b* ?4 g. C* c6 r1 f% uThe remarkable news about Sprycel cessation is that all 3 patients had failed/ i0 t; J$ F) f4 Q; \
Gleevec and Sprycel was their second TKI so they had resistant disease. This is0 _4 t" O- e. X# j; {* |3 c
different from the stopping Gleevec trial in France which only targets patients' I) g) v* T8 w) S9 U5 P) D
who have done well on Gleevec.2 e D# P$ H2 f% z( p0 x# d
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Hopefully, the doctors will report on a larger study and long-term to see if the
2 J& N* d% k& ^response off Sprycel is sustained.5 @2 Z! S9 |! h2 `
5 u/ n/ M5 D2 x) o; A# CBest Wishes,
! Q2 e3 D4 _3 a: e4 X" J4 p0 PAnjana
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5 |% c: }* y$ K9 S$ V2 AHaematologica. 2011 Aug 9. [Epub ahead of print]$ D0 i" E$ } I& C* N2 n; A
Durable complete molecular remission of chronic myeloid leukemia following6 U0 [& y# T: L" M0 H" K: V
dasatinib cessation, despite adverse disease features.( P; y: x/ {' @2 G. c- S+ {
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
1 h- t9 @( o- wSource
* Y w! {9 M% g% P. r4 L4 OAdelaide, Australia;
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# b4 Q% u ]) s$ WAbstract" L7 U6 f" G; t& y5 W, C
Patients with chronic myeloid leukemia, treated with imatinib, who have a
" | I+ j, ~5 T5 o4 ^& Gdurable complete molecular response might remain in CMR after stopping
$ r% P4 f' }2 u9 Xtreatment. Previous reports of patients stopping treatment in complete molecular
. @, ]' |: Z1 W8 O Aresponse have included only patients with a good response to imatinib. We' S7 |6 z* V, o, B0 r/ W% Z
describe three patients with stable complete molecular response on dasatinib5 F) y- A" S7 e* ?
treatment following imatinib failure. Two of the three patients remain in
0 }+ ?& @% F, v: kcomplete molecular response more than 12 months after stopping dasatinib. In
2 m2 f0 l7 p* v5 u- \" @2 Fthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to$ S- y' M+ x9 \6 r) e- |" o5 B" M
show that the leukemic clone remains detectable, as we have previously shown in
% {7 Q3 S7 g- Qimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
M% r5 g$ R5 |0 k! Othe emergence of clonal T cell populations, were observed both in one patient# O/ S( n- k" v9 f5 f. H6 ^* Q" V1 z& a' E
who relapsed and in one patient in remission. Our results suggest that the
5 i/ [+ W8 W$ B* e: T, [characteristics of complete molecular response on dasatinib treatment may be2 T+ ?. C n4 i& \1 }# i
similar to that achieved with imatinib, at least in patients with adverse/ V0 `' v. \* h# P8 q: Q# Y1 m
disease features.0 F. A. ]4 f! m2 J/ C
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