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。
+ e! [" D9 K3 x% b3 H 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5 R+ J" v- g2 K2 s& C$ ?
来源:Haematologica. 2011.8.9.' k' q& d! v8 \2 M8 G" k8 Q- |3 N7 R' A
Dear Group,6 k/ q! B+ x& ^4 O# ]) ^. m
) h! H+ m2 E& Q' f; SSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
( f6 L; ]; I# t) ^- Y0 _therapies. Here is a report from Australia on 3 patients who went off Sprycel
7 A/ h( x% b8 W1 h( iafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
- z/ F6 z p9 R1 m! v; i# ]# gremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel( W6 p# Z8 R8 g1 K
does spike up the immune system so I hope more reports come out on this issue.
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7 v: t" M, h; I& u9 x2 fThe remarkable news about Sprycel cessation is that all 3 patients had failed
5 A8 w6 N; j1 }, IGleevec and Sprycel was their second TKI so they had resistant disease. This is
! Q; m( e" G* X2 C ?9 E/ Mdifferent from the stopping Gleevec trial in France which only targets patients
8 m% H/ a# d1 [7 Twho have done well on Gleevec.
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! Z; N+ G! G% p' |& k7 `/ sHopefully, the doctors will report on a larger study and long-term to see if the
6 x' x& F' `5 B3 b dresponse off Sprycel is sustained.0 y: p) g1 P4 u @
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Best Wishes,
6 Z. t s# Y i% x( [9 dAnjana
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Haematologica. 2011 Aug 9. [Epub ahead of print], k8 [- l2 \ l+ d" B
Durable complete molecular remission of chronic myeloid leukemia following
5 R+ N) V$ m) o/ ]- w( tdasatinib cessation, despite adverse disease features.! e% O1 t: K; `1 l4 q- `
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;
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. |0 h' C" J! v. M( wAbstract
, z2 Z5 M/ b8 P! _# O4 B% U8 kPatients with chronic myeloid leukemia, treated with imatinib, who have a8 ?7 o X r7 J+ ?1 p2 k1 j5 @/ V
durable complete molecular response might remain in CMR after stopping( k# @0 ?' W0 f1 [+ { k
treatment. Previous reports of patients stopping treatment in complete molecular: D8 O( Y% H! q+ y' d7 B
response have included only patients with a good response to imatinib. We
. }. D& C% Y( S. jdescribe three patients with stable complete molecular response on dasatinib# R+ p9 U# T9 z; [5 N; ?1 }
treatment following imatinib failure. Two of the three patients remain in
' }" |4 R4 ~# V/ r1 Ncomplete molecular response more than 12 months after stopping dasatinib. In
7 [) t0 A9 P7 H( }5 W q$ Athese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
6 B3 V) \- j& k Ashow that the leukemic clone remains detectable, as we have previously shown in6 S: K6 `- u5 M
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
, j3 Z# i4 W+ B; w3 ythe emergence of clonal T cell populations, were observed both in one patient; n {+ c" {+ A
who relapsed and in one patient in remission. Our results suggest that the
1 Y0 `7 f4 v6 ~% N! G* rcharacteristics of complete molecular response on dasatinib treatment may be
# O; Y( z' `7 v9 E( Y5 y: }similar to that achieved with imatinib, at least in patients with adverse
% b/ L1 i! d" udisease features.( A6 O' `3 D# B
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