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。
\ N# r* W+ E* F* L. Q# n5 x 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。. u# K1 ~: u- G/ N- l9 o' k C, Z3 N
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作者:来自澳大利亚5 j, z4 X4 Z8 A5 f# d, P# p/ f
来源:Haematologica. 2011.8.9.8 B; U6 D. }3 O0 b
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
/ C4 `% e9 Q: ~# N* utherapies. Here is a report from Australia on 3 patients who went off Sprycel6 G+ O; ^( y, y
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients- h: \. ]9 y5 J. _) j
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel8 ?4 K5 F& }/ r
does spike up the immune system so I hope more reports come out on this issue./ F4 G* K0 M1 P/ B7 }! I
& j6 m$ C$ D: @2 GThe remarkable news about Sprycel cessation is that all 3 patients had failed
4 [2 m4 n, ?8 I' u8 ]Gleevec and Sprycel was their second TKI so they had resistant disease. This is
( b3 ^4 m* M. J/ p$ hdifferent from the stopping Gleevec trial in France which only targets patients
& Q5 A: |- x; | ~! _$ ^" I2 {who have done well on Gleevec.& F3 P/ w! Y! C* b) {# V B8 ~
, b9 A* X) h% z3 mHopefully, the doctors will report on a larger study and long-term to see if the! B [3 Y2 @" M8 P0 _7 W7 H
response off Sprycel is sustained.
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3 y9 Z, X- R8 I2 Z5 @6 u1 ]Best Wishes,
# d" F! }6 |; B& I/ A# y( [5 qAnjana
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, ]0 `: `. C0 b0 c Y; B/ x0 M2 K( ~# {$ z" K ?! M5 \6 g
+ P- F9 d/ `. g* ?Haematologica. 2011 Aug 9. [Epub ahead of print]9 R' ~ g f4 A X
Durable complete molecular remission of chronic myeloid leukemia following5 T' _0 T0 `( ^0 S
dasatinib cessation, despite adverse disease features.
) A* f8 B% v6 Y! pRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP./ V% S2 T8 o' g( |2 B# E
Source7 s. N: ?( @5 d: I& u R9 m
Adelaide, Australia;
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) r: ?: {2 \/ U8 X- Q2 UAbstract
' M2 O4 _ Q& P) _) m7 b9 i, b. VPatients with chronic myeloid leukemia, treated with imatinib, who have a
4 u0 M8 a. ^- Edurable complete molecular response might remain in CMR after stopping @ W: N& e9 n% M! n5 L9 `
treatment. Previous reports of patients stopping treatment in complete molecular
+ \0 H9 E K( p1 ]' l4 @0 mresponse have included only patients with a good response to imatinib. We
G0 L1 s3 [* A: E6 Gdescribe three patients with stable complete molecular response on dasatinib$ U N( k8 E6 _2 h+ u
treatment following imatinib failure. Two of the three patients remain in
. E3 i* K2 {1 g: N5 G. G3 lcomplete molecular response more than 12 months after stopping dasatinib. In1 q$ { b0 B) t- m. T
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
( h; V4 w- X+ r( e. [1 Nshow that the leukemic clone remains detectable, as we have previously shown in# j% F" e8 r! q& g5 J9 N/ K
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
2 r: R" P( @* B. n0 H# xthe emergence of clonal T cell populations, were observed both in one patient6 O0 W$ ]6 I5 g L
who relapsed and in one patient in remission. Our results suggest that the, f+ z9 Z% ?# F$ H* G- F
characteristics of complete molecular response on dasatinib treatment may be
; @$ b6 V& T4 o9 P7 t( i% csimilar to that achieved with imatinib, at least in patients with adverse; x/ l% U7 u' M) c) g
disease features.$ u! @1 b: X7 O: F8 @9 s7 N3 W
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