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。" P% a) C B2 P$ h* H6 \
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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5 z5 O# j& p+ P+ ?3 r作者:来自澳大利亚( {' J% E/ P3 |& m; H4 B
来源:Haematologica. 2011.8.9.; x5 `- D8 e: q0 x E& n$ J- d
Dear Group,6 G; M* B% p, m8 A: s! `7 U
" Z0 J/ f+ Y$ V* ^. VSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
+ d- x5 h7 k8 M. L# Ftherapies. Here is a report from Australia on 3 patients who went off Sprycel
; _$ O. R) W7 r( n8 p0 Z/ vafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
+ [! B2 D9 F$ B2 s) J$ M, A) [remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel% R, a5 _- a G( @! W3 i
does spike up the immune system so I hope more reports come out on this issue.2 B/ ^% j3 l( Y# O; @% L& W- f
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The remarkable news about Sprycel cessation is that all 3 patients had failed
3 q, a }8 Y5 n2 w4 CGleevec and Sprycel was their second TKI so they had resistant disease. This is
% z% v" s/ w4 } mdifferent from the stopping Gleevec trial in France which only targets patients3 O9 M# \# l, h" G8 d# V
who have done well on Gleevec.
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! [5 h( }6 T S" oHopefully, the doctors will report on a larger study and long-term to see if the; z' q( X6 E* K8 R
response off Sprycel is sustained., l) U: B! l) ]
; `) Y: z+ a0 X9 VBest Wishes," T _0 D1 H% i( m
Anjana H! o i, D# {
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Haematologica. 2011 Aug 9. [Epub ahead of print]
6 r' B0 q A; h4 Z5 L6 CDurable complete molecular remission of chronic myeloid leukemia following5 ~, a. C6 X. t" F4 v( l, E& [
dasatinib cessation, despite adverse disease features.+ k4 |0 K- c, }4 C/ i
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.: T; C$ Z8 h D8 R
Source: j/ p; L% q- u+ W
Adelaide, Australia;8 [- m7 T! l9 z! ]" L- D
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Abstract r4 f1 e: U6 P: F+ x5 \
Patients with chronic myeloid leukemia, treated with imatinib, who have a
0 X7 p0 x7 `- s7 v1 {5 y, Fdurable complete molecular response might remain in CMR after stopping
" {8 @% }, z: d0 H! W1 M) Utreatment. Previous reports of patients stopping treatment in complete molecular* D' n& K4 v/ _* @% R: E( J3 X
response have included only patients with a good response to imatinib. We
+ c. q5 t( p7 i0 j) edescribe three patients with stable complete molecular response on dasatinib
8 }1 m |$ o# rtreatment following imatinib failure. Two of the three patients remain in
) l% `. `6 I/ C! Icomplete molecular response more than 12 months after stopping dasatinib. In
% J8 E' K& ~: w% ythese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to- H9 W: R5 _6 i+ W3 @! V2 D2 j
show that the leukemic clone remains detectable, as we have previously shown in+ o9 g" n( q3 a! b- G! P
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as- H, T) R* R7 f8 X; `9 @( a
the emergence of clonal T cell populations, were observed both in one patient
( i- i' o: o3 p) o" qwho relapsed and in one patient in remission. Our results suggest that the
1 f# b2 `. ^/ Z2 ccharacteristics of complete molecular response on dasatinib treatment may be
& T Y5 B9 Z% v7 q- Z5 ^ c+ ?( _) msimilar to that achieved with imatinib, at least in patients with adverse
* Z0 {! y1 P6 }' F' j" qdisease features.
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