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 j: r6 f2 U3 I$ x$ L
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。( b) _. M% s# Y; l: w% i4 l1 K6 L
# G: y+ Q/ b1 W5 h作者:来自澳大利亚
9 x0 t( N$ c7 h2 C6 ]9 V来源:Haematologica. 2011.8.9.
% t7 n. ]! J* m# J2 O: ?Dear Group," l U6 b( j0 f% l6 S8 z; m; b+ T
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML* G5 o+ n6 [6 L3 ^) G6 v( g
therapies. Here is a report from Australia on 3 patients who went off Sprycel6 G6 i$ o3 [) M8 Y* M
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients8 P: v( l6 q: l" ]
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel4 _7 ^0 x3 H! R
does spike up the immune system so I hope more reports come out on this issue.; {: G# Q4 E$ ^: b& G5 A, X4 U& |
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The remarkable news about Sprycel cessation is that all 3 patients had failed
7 \3 _1 ~% [! c9 G- HGleevec and Sprycel was their second TKI so they had resistant disease. This is. K7 _5 _) Z5 ^5 ?5 \! H
different from the stopping Gleevec trial in France which only targets patients2 [* p% w. Q& V; r( r5 k$ ^; _' b
who have done well on Gleevec.: m' u, u' C) R/ y) H; J
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Hopefully, the doctors will report on a larger study and long-term to see if the
4 M. u8 N8 Z& ?6 @# U7 Z- n- Rresponse off Sprycel is sustained.7 d a( B5 e/ R5 M6 @8 p
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Best Wishes,* }. a8 \+ D: P- B
Anjana4 E' w4 G! E/ ]; `( C
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Haematologica. 2011 Aug 9. [Epub ahead of print]* ^$ a6 O' R* I2 n. V
Durable complete molecular remission of chronic myeloid leukemia following
/ `! a! L3 g1 kdasatinib cessation, despite adverse disease features.1 A9 T3 w/ q, `. [ h
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.. d: @3 O+ I0 H) ]
Source1 m, h) \0 D6 G
Adelaide, Australia; k) E/ P/ F& k! H
& y8 ]! w: ]. C F$ ]) e. b' nAbstract- x3 u' w. t4 G/ } ?! v) l3 S, X
Patients with chronic myeloid leukemia, treated with imatinib, who have a
6 U% @1 ~: x; Y/ M' Tdurable complete molecular response might remain in CMR after stopping w; X8 P3 c* \6 q
treatment. Previous reports of patients stopping treatment in complete molecular" O$ d7 }. D7 L8 P6 Q% ^$ @
response have included only patients with a good response to imatinib. We( x$ g4 t. k1 Y# }
describe three patients with stable complete molecular response on dasatinib& N" h" a- R5 P% s( k% X: `
treatment following imatinib failure. Two of the three patients remain in( p+ s( O' Z' O7 _' q: L
complete molecular response more than 12 months after stopping dasatinib. In3 L6 F/ G6 J5 D; H. v' ?+ G# b
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
! J5 R& Z# m, ^; V. |show that the leukemic clone remains detectable, as we have previously shown in7 ^1 t2 Y% F7 O0 {
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as+ p }3 C5 j- W* _- r! @- `/ F
the emergence of clonal T cell populations, were observed both in one patient7 ^6 k1 p+ B) ^1 A: E% x
who relapsed and in one patient in remission. Our results suggest that the: f7 W* H# B0 F0 K+ z$ h
characteristics of complete molecular response on dasatinib treatment may be
4 d- j6 Q$ h0 Ysimilar to that achieved with imatinib, at least in patients with adverse
$ B% V0 U) a H* v- G D+ Mdisease features.
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