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。+ `9 n: V8 r' G' \* y
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。( p; Q$ H* v( Z8 T" T3 Y9 _
. h6 s; n4 J) h3 }# G* ^: k: S5 d7 p作者:来自澳大利亚
- E9 W5 P; l+ J5 k2 z" c a g2 n4 B来源:Haematologica. 2011.8.9." S$ J0 t: V9 x
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
( F0 x: i3 \. Ttherapies. Here is a report from Australia on 3 patients who went off Sprycel6 C- m: i6 J. K+ Z2 ^( ~6 p. p
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients# c: _! G0 I; \1 R, J* I' N
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel* }) S1 }4 o* ]: y: I2 T8 |
does spike up the immune system so I hope more reports come out on this issue.
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7 l, @$ o& D0 i& F! }The remarkable news about Sprycel cessation is that all 3 patients had failed" r7 \! H% n7 z
Gleevec and Sprycel was their second TKI so they had resistant disease. This is; O: b3 y, U5 a7 W3 Y6 ]/ Q
different from the stopping Gleevec trial in France which only targets patients
" M7 `' Y+ v3 t0 j; ]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 the; N+ O' F: b0 @3 G2 g
response off Sprycel is sustained.8 e) p' W D1 u& \( G+ y* w
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Best Wishes,
" f* J" d& l2 @. U7 a1 M5 N5 ~8 qAnjana4 o; X5 m2 ^* F$ F8 B
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Haematologica. 2011 Aug 9. [Epub ahead of print]
8 E+ S1 y. o3 _$ YDurable complete molecular remission of chronic myeloid leukemia following
8 F' e) X; H' J: c# Jdasatinib cessation, despite adverse disease features.
$ U& _9 v6 I r% L- ^7 Y5 vRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP., w5 j3 m) F$ e8 Z( T
Source
4 G. P* ^1 e5 VAdelaide, Australia;, T* ` J: y- H8 [' K: K
3 J+ G# g; J) m1 t: I$ ~0 _, FAbstract
2 d2 g) a2 ]. z NPatients with chronic myeloid leukemia, treated with imatinib, who have a
$ h7 z* j1 i6 \( k# q' cdurable complete molecular response might remain in CMR after stopping& N+ Q7 j6 l1 o
treatment. Previous reports of patients stopping treatment in complete molecular
5 V" f, d3 t' s8 A, Oresponse have included only patients with a good response to imatinib. We
! D8 B8 F3 P3 i7 Ldescribe three patients with stable complete molecular response on dasatinib8 ?- s3 C; B/ d& J8 ~4 a' J+ b6 e$ L
treatment following imatinib failure. Two of the three patients remain in% L# F+ f" t8 l! N) p: M3 j
complete molecular response more than 12 months after stopping dasatinib. In
8 x/ E) S( p+ h8 D) K1 N, v1 Uthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
6 d$ | J3 w- O0 |6 ashow that the leukemic clone remains detectable, as we have previously shown in
* C% h8 S# i1 q8 O- ximatinib-treated patients. Dasatinib-associated immunological phenomena, such as. B3 _: `4 Y9 d$ r* ?) \
the emergence of clonal T cell populations, were observed both in one patient
9 N) S* U! Z0 e7 F) t D) ^$ bwho relapsed and in one patient in remission. Our results suggest that the
0 b8 D9 G5 {! H ?# {characteristics of complete molecular response on dasatinib treatment may be
$ C/ P$ f5 Y" h) S+ q! _+ R# fsimilar to that achieved with imatinib, at least in patients with adverse4 |! S) G" }5 Z0 p9 ^$ T9 G* ?
disease features.
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