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。
1 _ b# ^: F0 I. v; W( O) S4 p 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。" |( `. w# i o: _! q" H
2 U8 [8 l9 B# U, }. K作者:来自澳大利亚! I& Y6 L$ o. G+ T# _9 @% o
来源:Haematologica. 2011.8.9. n2 I' N- t& P; B# {: u
Dear Group,; h; p/ S4 }" {5 ^# t4 \
; j" [" X8 [, V6 s/ ]& JSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
5 q) e" H9 ]/ u9 P1 d& ltherapies. Here is a report from Australia on 3 patients who went off Sprycel/ V- ^% `6 H" ~0 A5 b! K- T
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients& O) b {, T# g: B% n) C3 [
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel8 [5 Q8 ~: _: Q0 P
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 failed" f! I- y+ X) s" x
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
! v; T7 [! n! \3 o( Q ?2 I% [different from the stopping Gleevec trial in France which only targets patients9 X. E& E) I) Z7 Z
who have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the3 j0 q' y/ f! ~0 B( Q; i
response off Sprycel is sustained.
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Best Wishes,
+ g/ p' D5 |! h$ M* H& X2 { JAnjana
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# w# n. w9 W) h$ D) [$ Y2 t) z, t/ j2 ~1 T- _+ ~9 j
+ ^7 R4 }; `2 J6 K
Haematologica. 2011 Aug 9. [Epub ahead of print]# U; t- d2 O# |
Durable complete molecular remission of chronic myeloid leukemia following) p# B) g. t5 t! C% e: ?
dasatinib cessation, despite adverse disease features.( G1 M" e1 l1 K
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.- {( `. x8 E% z
Source0 Q$ O0 ?- S. Y6 d$ ]( i4 P6 |
Adelaide, Australia;
1 W* g9 V) O9 W% e" p4 ] v5 P( w8 V) J4 p2 O3 ]; s1 I% x/ Q% W
Abstract' o/ V. k% }3 e* b p! D& f: x
Patients with chronic myeloid leukemia, treated with imatinib, who have a
) s9 [0 i1 M5 k4 qdurable complete molecular response might remain in CMR after stopping; t; ^. j6 ~4 g% Y
treatment. Previous reports of patients stopping treatment in complete molecular
+ o% K9 ~1 T- i$ ]( W2 N/ Fresponse have included only patients with a good response to imatinib. We
6 f: H5 l4 R+ E+ S4 c1 e; qdescribe three patients with stable complete molecular response on dasatinib2 {( o0 d# m& p- h* G/ A/ O
treatment following imatinib failure. Two of the three patients remain in# C+ s5 Z" j1 {# z) z$ Q
complete molecular response more than 12 months after stopping dasatinib. In
2 y: l" o/ c1 J% ^4 i5 J. ythese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to, x2 w* U- C1 }' U$ f6 T: n% _
show that the leukemic clone remains detectable, as we have previously shown in
$ k; z& R8 A3 C. `* ?9 v& C: a2 l3 c2 limatinib-treated patients. Dasatinib-associated immunological phenomena, such as
7 n; o( b8 k- m2 I; }the emergence of clonal T cell populations, were observed both in one patient# D1 x( G. X% n9 p
who relapsed and in one patient in remission. Our results suggest that the+ x# |" |: ]8 o- w) w5 Q( f
characteristics of complete molecular response on dasatinib treatment may be
! e/ W& m' m \+ `) r5 p* jsimilar to that achieved with imatinib, at least in patients with adverse
8 Y9 g1 q: d8 O( _$ E+ @7 pdisease features.+ V5 ?9 X7 u- @( [
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