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。: C+ b" P9 \- h$ }8 S
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。. S$ w+ w6 ^# t0 ~ ~! `7 D
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作者:来自澳大利亚
' O. H7 F7 ^$ ~. w$ x7 H. }: f* _6 ^来源:Haematologica. 2011.8.9.
' M& g; j- U+ J* p1 CDear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML' D, H2 |$ `' l. |# A
therapies. Here is a report from Australia on 3 patients who went off Sprycel
& R5 g( H% S3 {4 J- |after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
6 u# A3 Q& c2 I" y- v) Cremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel- E& c, d$ l/ B& ~% y" _; x/ W* R+ m0 S
does spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed9 l' K3 i$ z; Y; R
Gleevec and Sprycel was their second TKI so they had resistant disease. This is! P: C" D, y/ A% N' I: k$ C
different from the stopping Gleevec trial in France which only targets patients
: }4 z: E. I! m& \& Uwho have done well on Gleevec.
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8 E& O& J5 ?9 z' a9 |Hopefully, the doctors will report on a larger study and long-term to see if the1 ^" w' ?* b. f
response off Sprycel is sustained.2 c- _# ?; D) G- j: w" J
) D& n8 n2 u Z7 n E7 c: LBest Wishes,
8 Y! P' S) v7 \1 ^% P* t, H' uAnjana: w7 K3 k8 h, l: ?
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E# l9 W) S j6 Q' F2 LHaematologica. 2011 Aug 9. [Epub ahead of print]( p$ R& E; G8 p; e4 c
Durable complete molecular remission of chronic myeloid leukemia following9 e+ K% _. T+ c, F8 I
dasatinib cessation, despite adverse disease features.5 e. R' v3 ]2 _8 F7 n
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.8 g5 m9 ]4 z* T k' n
Source: u, m2 O8 G j7 H( ~
Adelaide, Australia;
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Abstract
; H, d: d, s. Q/ HPatients with chronic myeloid leukemia, treated with imatinib, who have a1 m% ^& x2 ^0 v. m! _/ D
durable complete molecular response might remain in CMR after stopping
- X2 q) Y" I, N& P4 h% ~& ]treatment. Previous reports of patients stopping treatment in complete molecular* P& t. _5 @- G' {
response have included only patients with a good response to imatinib. We
, g3 G, a3 W p2 ~describe three patients with stable complete molecular response on dasatinib- L ]+ n* ?1 j( k: ^" ~7 v
treatment following imatinib failure. Two of the three patients remain in5 ^+ f+ |2 k! x4 x
complete molecular response more than 12 months after stopping dasatinib. In
7 y# \' x% T5 X j) O* h: O5 Jthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to) A& B$ C! L8 ^+ H
show that the leukemic clone remains detectable, as we have previously shown in
5 u5 t. H1 P8 K! u7 c( T6 timatinib-treated patients. Dasatinib-associated immunological phenomena, such as8 O/ L% W1 h) b& l! ]0 t1 i, v' N
the emergence of clonal T cell populations, were observed both in one patient
/ X9 q* h7 ?: d9 E: zwho relapsed and in one patient in remission. Our results suggest that the
& Z8 P7 b2 T$ E7 e) P% Fcharacteristics of complete molecular response on dasatinib treatment may be, R7 L6 L1 w5 x% e" [
similar to that achieved with imatinib, at least in patients with adverse! a, k$ U! F! C: r4 q6 r- D/ [
disease features.
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