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。' A4 m5 [" E) s3 L& U% z9 T$ S% q" a
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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5 s+ F5 ?% R8 E- r7 X" }$ d7 P# P' a3 D作者:来自澳大利亚
3 Z% t+ B. {( f) ?4 Q4 p来源:Haematologica. 2011.8.9.
% ]# ]! b$ `& _0 WDear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML$ m3 R- d1 @9 ]( r2 O L+ m0 w; _
therapies. Here is a report from Australia on 3 patients who went off Sprycel7 Z# t9 g4 D+ [3 E/ t) O
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients/ b1 f* R4 i8 B- x# S
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel) X/ C# C$ L4 m, Z+ n8 n( S( v
does spike up the immune system so I hope more reports come out on this issue.+ W* E8 b6 y! l" g9 m7 V
# p# v) z) _- G; V0 }# t" d1 mThe remarkable news about Sprycel cessation is that all 3 patients had failed: z% g* j) t7 T0 V* l
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
, Y1 S/ x: z; ] Z' S. v+ t* Vdifferent from the stopping Gleevec trial in France which only targets patients' y$ ~8 D: J& }% X- n R
who have done well on Gleevec.5 |: l. j6 g2 b( ^8 w; F; T/ J
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Hopefully, the doctors will report on a larger study and long-term to see if the
% B+ Q* A: K, @* J# y8 d( [response off Sprycel is sustained.
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Best Wishes,
# c) l8 R' }" B4 xAnjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]
/ ]+ F' j0 V0 s3 {% Z1 sDurable complete molecular remission of chronic myeloid leukemia following+ i3 U" _, m5 F& D# }
dasatinib cessation, despite adverse disease features.
4 C) M5 d7 W3 U4 i5 y9 YRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
6 R6 R3 n+ r' XSource. y' x2 m" i8 e- s
Adelaide, Australia;
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Abstract+ @1 A1 R- k# L* D1 d
Patients with chronic myeloid leukemia, treated with imatinib, who have a h8 c2 P% F) `8 ^' A; |1 Z
durable complete molecular response might remain in CMR after stopping# o5 z8 H% H7 }3 {& O
treatment. Previous reports of patients stopping treatment in complete molecular" C( r" X5 q7 g5 w; o2 G9 F+ n
response have included only patients with a good response to imatinib. We& s4 ]1 } z9 D( o+ z8 C- t1 |
describe three patients with stable complete molecular response on dasatinib
/ ]& m& r$ m9 H# P; e! gtreatment following imatinib failure. Two of the three patients remain in' r* ?, R4 m. a. d' s) ]5 z/ u
complete molecular response more than 12 months after stopping dasatinib. In) u8 {$ A0 d0 E
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
0 n& P/ y S: x1 }# jshow that the leukemic clone remains detectable, as we have previously shown in
1 B% W: ^/ I; V9 I4 t7 y- qimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
4 t/ h) L# T: q! _) A sthe emergence of clonal T cell populations, were observed both in one patient
; M9 u% ?9 ]( gwho relapsed and in one patient in remission. Our results suggest that the, t5 W$ W& S3 Y& [4 r/ }' R
characteristics of complete molecular response on dasatinib treatment may be0 s8 L) w1 T1 h+ v
similar to that achieved with imatinib, at least in patients with adverse+ i/ s7 w1 A- ~* {, ?
disease features." X; F- q6 h" P y% t, X" L0 ~
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