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。
g4 Z$ {5 q* W$ @& Y* 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。
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B' A! j3 c7 S# Y作者:来自澳大利亚& E) I9 O; i6 R7 h; p
来源:Haematologica. 2011.8.9.
: U+ v: S+ M9 q6 \Dear Group,: ?: a2 }% w8 ?; T
' T2 z' c' l/ }. o J/ s" W- I) fSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML) j1 n% t6 x R, W! t
therapies. Here is a report from Australia on 3 patients who went off Sprycel
. X2 h, A4 z& Q; g2 A) \% nafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients% M( @0 F1 F' F2 C, [# h$ g: u
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel, S' D8 E7 N- m/ w
does spike up the immune system so I hope more reports come out on this issue.+ v" c* g F# z o2 G
' l/ u' p+ }/ l' u: Z7 O$ sThe remarkable news about Sprycel cessation is that all 3 patients had failed
3 r0 \& u; r9 sGleevec and Sprycel was their second TKI so they had resistant disease. This is
* d6 B+ p0 J+ tdifferent from the stopping Gleevec trial in France which only targets patients
/ |) ?/ ~! \; I9 h8 R4 V( Y- Kwho have done well on Gleevec.! x' g H, F/ g- u, x
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Hopefully, the doctors will report on a larger study and long-term to see if the
( A9 y0 Q6 r& L sresponse off Sprycel is sustained.5 T" X3 @8 w" a5 U, \: V: X l3 }
S6 {, H5 u+ o0 |0 S: b2 T
Best Wishes,, B- q1 a- n0 G* @ ]
Anjana' j2 N/ K% V& n4 k+ C3 t
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Haematologica. 2011 Aug 9. [Epub ahead of print]
5 N' j/ m% c$ _. P* a% K6 ?Durable complete molecular remission of chronic myeloid leukemia following( m* z$ X, V t |6 \. u5 E; C
dasatinib cessation, despite adverse disease features.
$ c/ ]! w% x0 X0 g+ ? k! |5 lRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.2 \4 a" T- z1 u7 t+ }: v
Source* M7 B/ Q" u! W: P% s! A
Adelaide, Australia;
4 d1 {; M- ]% A/ Z% y' u' I6 X* p4 a% G+ K1 M
Abstract- F2 ]1 i/ x s" C' }
Patients with chronic myeloid leukemia, treated with imatinib, who have a
% i' Z6 q5 B' a0 J5 ]& [. o% `, `8 mdurable complete molecular response might remain in CMR after stopping0 o# ~: n* v) a; w2 }
treatment. Previous reports of patients stopping treatment in complete molecular
: s8 Y# _% Q h o0 Nresponse have included only patients with a good response to imatinib. We
! M( s) l$ ^% g Ddescribe three patients with stable complete molecular response on dasatinib
# b/ m. x$ }( R3 G$ P$ K& z2 dtreatment following imatinib failure. Two of the three patients remain in
3 m9 w. `, K: u6 Q" bcomplete molecular response more than 12 months after stopping dasatinib. In
6 R8 F- i8 G2 n* |1 v! S/ ~these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to5 M; T; Y6 l3 N, ~9 x) w& W
show that the leukemic clone remains detectable, as we have previously shown in
8 l, k8 s c& l. T( M, I% Qimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
1 F( A" S( f' fthe emergence of clonal T cell populations, were observed both in one patient1 ]. |5 w- G0 D
who relapsed and in one patient in remission. Our results suggest that the: ~4 D! K) H9 Y8 M- U5 e3 L$ U
characteristics of complete molecular response on dasatinib treatment may be
) U' L. V3 S' {# K9 G: usimilar to that achieved with imatinib, at least in patients with adverse
7 U4 R" E' [9 ^, G8 u: edisease features.- N; d8 o! i5 P4 u5 V
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