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。
6 z" t3 e) n, 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。5 b, G% s' C/ L. E
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作者:来自澳大利亚
4 f( m5 _& H* l来源:Haematologica. 2011.8.9.
$ ]/ n, c ]) q* \/ [- WDear Group,
( {& b3 K3 Q2 u/ k* e6 A8 J
8 m7 y( g+ i" ?Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML4 f2 J( }# ?* {+ |
therapies. Here is a report from Australia on 3 patients who went off Sprycel: y: Z# A" N# m4 J, u5 i+ Y
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients: q- k, M- d* i& |# k6 Z' O" u9 D& c
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel$ o( T9 r) x7 _
does spike up the immune system so I hope more reports come out on this issue.8 E8 V9 r* c4 d- S
7 @: Q$ B. g1 q4 A
The remarkable news about Sprycel cessation is that all 3 patients had failed
$ q% i9 m- [+ Q3 qGleevec and Sprycel was their second TKI so they had resistant disease. This is
! _6 @7 Q J" udifferent from the stopping Gleevec trial in France which only targets patients
1 P# {4 S6 p3 f& y6 _5 mwho have done well on Gleevec.
7 [2 x3 T# z3 o2 R- S' `" L; X9 O6 E* Z* m5 B o
Hopefully, the doctors will report on a larger study and long-term to see if the
5 g/ R, w9 E- K6 [; tresponse off Sprycel is sustained.) G+ r5 b L1 f, k! U2 a( |8 w. T
6 i7 |4 c1 p- u: S5 |$ ^
Best Wishes,
; \0 V9 E, x. IAnjana: d" }" S/ @/ }5 M) i+ ]8 S7 S
) z) s7 k7 }. V7 c8 s; R T! E
4 [! @' l0 N+ S' v$ V8 s/ W3 [; }3 G6 _3 E; P" a" }5 d
Haematologica. 2011 Aug 9. [Epub ahead of print]
; D/ I4 r* F2 _: e# V& lDurable complete molecular remission of chronic myeloid leukemia following
. C% ~8 P. O/ tdasatinib cessation, despite adverse disease features.
4 P& {& q2 f% D8 i( m0 qRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
. q6 p: ]' R# ?5 A4 a3 _4 }5 i/ {2 ?/ KSource2 b+ ~2 z8 V& @1 g9 P
Adelaide, Australia;
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Abstract4 W: K {2 U4 \
Patients with chronic myeloid leukemia, treated with imatinib, who have a
' I. f3 Q/ H, ^durable complete molecular response might remain in CMR after stopping
* T- {2 U6 ?. M+ \& btreatment. Previous reports of patients stopping treatment in complete molecular( w# p* l$ M V* b$ d1 K
response have included only patients with a good response to imatinib. We
! h! _0 N( V4 Jdescribe three patients with stable complete molecular response on dasatinib
( U: u+ F/ I' N, }# F/ @, ~treatment following imatinib failure. Two of the three patients remain in
+ b) z, _+ F1 S0 `/ E+ Vcomplete molecular response more than 12 months after stopping dasatinib. In* N* X( y$ _: z+ x! n9 u
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to$ m! [5 i: Q" C/ V' u7 k
show that the leukemic clone remains detectable, as we have previously shown in6 O2 {9 M* `. E& R/ I }% ?
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as) l% E6 {# h. k. q6 @8 [
the emergence of clonal T cell populations, were observed both in one patient6 b$ W( u/ L8 D- Y: v: P
who relapsed and in one patient in remission. Our results suggest that the
) A5 P( O# T( ]! @8 x jcharacteristics of complete molecular response on dasatinib treatment may be
( x$ k. T* }& p' d! C/ Q# {' esimilar to that achieved with imatinib, at least in patients with adverse
6 m2 F: ]2 C$ z6 [disease features.# x8 R5 p& q4 P+ V6 q) X7 e
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