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。# O8 n- T9 p6 `9 q- Z2 D! J
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0 x2 C- ]$ ~* h7 N. q
来源:Haematologica. 2011.8.9.9 \( A0 o' `2 o6 P; |+ O. D
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
! L* {# V! _. j; `- Utherapies. Here is a report from Australia on 3 patients who went off Sprycel
: z- ?' o9 l0 U& |2 i$ Oafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
! P# I H$ v5 w* T: s/ ]remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
. q! e' G% R# {# y- Q' v- l" ndoes spike up the immune system so I hope more reports come out on this issue.* ~% F X2 v% ?% W0 K4 o4 i* b
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The remarkable news about Sprycel cessation is that all 3 patients had failed
4 |* z; \( G( k- ^1 @% i9 ]5 pGleevec and Sprycel was their second TKI so they had resistant disease. This is
/ p! c- ~; g, N1 a) R# ]different from the stopping Gleevec trial in France which only targets patients3 a) k5 T# i( C. H
who have done well on Gleevec.
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" m6 c, j, W3 `% ^1 s/ f" IHopefully, the doctors will report on a larger study and long-term to see if the9 y3 A9 `4 n$ @' `( V% ?0 b6 t1 F
response off Sprycel is sustained.& y4 e8 J# I* N+ q
+ p% j& x0 H4 W5 _* uBest Wishes,
4 P- B/ h @3 A) r5 Q7 QAnjana5 c$ |; E3 m4 ^
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Haematologica. 2011 Aug 9. [Epub ahead of print]4 R6 a% F# i* f- J3 ?' O! g c
Durable complete molecular remission of chronic myeloid leukemia following6 C+ M9 t4 m) g/ |% R* K" l( @
dasatinib cessation, despite adverse disease features.
! F: b4 A/ K; L' Y3 i; c# RRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;
4 W* A: y2 S9 z/ S! i! r; y# c6 J, m/ x/ O6 S1 ^) Y' a) H$ m3 X
Abstract
9 K, N1 `- d4 ~, X+ yPatients with chronic myeloid leukemia, treated with imatinib, who have a
/ a% X1 {3 \# P" Zdurable complete molecular response might remain in CMR after stopping. n0 } h* U) U( c0 r
treatment. Previous reports of patients stopping treatment in complete molecular4 _8 V0 U0 P. M% L& F( {) c
response have included only patients with a good response to imatinib. We
% s8 q1 n9 A: r7 v9 U z9 mdescribe three patients with stable complete molecular response on dasatinib8 [# j2 W, |& A( g
treatment following imatinib failure. Two of the three patients remain in
+ i1 ]# |4 K- l: z' U* u' icomplete molecular response more than 12 months after stopping dasatinib. In
/ Y6 S3 R6 Y/ X7 P5 Uthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
1 d. p$ ]8 u8 r8 T/ ?show that the leukemic clone remains detectable, as we have previously shown in
9 h" T, q' W/ \: N4 X* K6 u. z/ a* g' Oimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
]# i) q4 X) p1 ^$ \the emergence of clonal T cell populations, were observed both in one patient; d4 B5 @' w. Q" B! s
who relapsed and in one patient in remission. Our results suggest that the
* z o0 d4 _' w) Zcharacteristics of complete molecular response on dasatinib treatment may be- J# L$ }$ h# I5 I( q
similar to that achieved with imatinib, at least in patients with adverse
5 M! W* U! ~5 B. ?! I( _) Pdisease features.
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