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。 L2 X( S) k' ^3 ~- |1 N# {
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9 J! k+ {: o, m/ Z1 m. ^' W) w
来源:Haematologica. 2011.8.9.: C* _4 g# [) y- M/ s" F; M
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
* H( V% D: P2 p2 p& atherapies. Here is a report from Australia on 3 patients who went off Sprycel
9 ]6 g5 V3 {- q; e- @after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients/ A9 b) A+ B8 ^
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
& O: h, p8 m8 n, ?) x( n% `does spike up the immune system so I hope more reports come out on this issue.$ T) Q9 h/ S9 N# ?* ]) z
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The remarkable news about Sprycel cessation is that all 3 patients had failed8 i e( ^9 _! y) O3 m! c
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
9 r1 [. Y- o. {; g& g% E' i/ Rdifferent from the stopping Gleevec trial in France which only targets patients
8 ]+ k+ U; t: vwho 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
, P+ D$ V7 u L" H+ Y& T7 dresponse off Sprycel is sustained.
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0 t( m' S, O. eBest Wishes,. K: [. ^' h# x, u( k9 @5 n
Anjana
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. V- {5 Q% K& F$ |: SHaematologica. 2011 Aug 9. [Epub ahead of print]5 o0 N/ F$ a5 D& B
Durable complete molecular remission of chronic myeloid leukemia following. W. D3 S" q- e
dasatinib cessation, despite adverse disease features.6 v( K a5 T1 y
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
$ |! ?% a" o3 [& S: |6 i. USource
* G6 Y% T. o& f& d. c4 ^# ]& X. QAdelaide, Australia;
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Abstract
$ I: Q! {7 P* DPatients with chronic myeloid leukemia, treated with imatinib, who have a: K+ L+ O4 w7 r0 W4 j0 w
durable complete molecular response might remain in CMR after stopping
9 h5 [2 S% S1 P/ W3 I3 Htreatment. Previous reports of patients stopping treatment in complete molecular
1 V2 y' {8 w: r9 W3 o7 l. `$ c) l5 |response have included only patients with a good response to imatinib. We
2 X- \2 E$ X4 @9 Kdescribe three patients with stable complete molecular response on dasatinib
7 ^. L, k0 Q# n5 Q5 c2 gtreatment following imatinib failure. Two of the three patients remain in
5 C2 K% x, D8 Z% M0 `complete molecular response more than 12 months after stopping dasatinib. In+ p0 g" l. a D3 _
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to' J; L4 A" u8 f# |; j" O
show that the leukemic clone remains detectable, as we have previously shown in
- B5 b/ n! ^. l# gimatinib-treated patients. Dasatinib-associated immunological phenomena, such as# Q' z4 S# [& K) I. M
the emergence of clonal T cell populations, were observed both in one patient f4 G$ W/ Z4 s
who relapsed and in one patient in remission. Our results suggest that the
& P) e* P+ _6 i" Ycharacteristics of complete molecular response on dasatinib treatment may be
" Y7 E7 p+ ]8 X/ U+ \similar to that achieved with imatinib, at least in patients with adverse
4 `2 C" F* s" b% t: Jdisease features.
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