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。& F$ c# X# H% o2 `, s; y9 z
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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% o0 O, t: Z, R) I( b& J2 L1 \6 t作者:来自澳大利亚
+ N$ A0 B4 H4 b% E7 p+ R: L来源:Haematologica. 2011.8.9.
( ]( S& b G, vDear Group,
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- \ f* ?6 w7 T# jSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
; Q4 z5 N1 N4 { w; i2 gtherapies. Here is a report from Australia on 3 patients who went off Sprycel3 P; w' j! U9 S4 z8 g0 C
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients: \ p' }" _% K$ J/ g2 ]
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
( Y- ?! r7 c8 k. }6 zdoes spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed
) B5 g v5 e. W/ V6 HGleevec and Sprycel was their second TKI so they had resistant disease. This is9 g* Q8 O' f4 q
different from the stopping Gleevec trial in France which only targets patients
2 k+ N9 E2 d4 W) b( h! Rwho have done well on Gleevec.8 B# U W% m1 S/ b- Z8 |
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Hopefully, the doctors will report on a larger study and long-term to see if the
: j/ M7 x9 s% r. o) jresponse off Sprycel is sustained.
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Best Wishes,1 H. ] U* o: `& r5 z7 {8 m
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]
. k- \) h i [' a6 }Durable complete molecular remission of chronic myeloid leukemia following$ Q& Q3 t- h! i9 D* }6 ~
dasatinib cessation, despite adverse disease features.7 P$ C" d. g8 Z# \( ^
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.0 F+ i8 |4 |* Y& G
Source
! a2 K% ?0 s% C R6 D* [Adelaide, Australia;
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Abstract4 q9 U- q# f+ H. |
Patients with chronic myeloid leukemia, treated with imatinib, who have a
; ]& t/ Q( b$ F1 r7 zdurable complete molecular response might remain in CMR after stopping# B1 u5 E" h8 L1 H' R6 u( M
treatment. Previous reports of patients stopping treatment in complete molecular/ L' i' u& B; H
response have included only patients with a good response to imatinib. We' Y: N% G, m( Q8 F
describe three patients with stable complete molecular response on dasatinib6 `- v: w1 P5 y! V
treatment following imatinib failure. Two of the three patients remain in
+ I# r* x' B! c/ v2 |complete molecular response more than 12 months after stopping dasatinib. In
4 Y2 q% I" _! v, F! Z; Sthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to" c) h5 E9 H( e" s9 t3 X
show that the leukemic clone remains detectable, as we have previously shown in
; a' }* Y5 ~) F9 ]imatinib-treated patients. Dasatinib-associated immunological phenomena, such as2 U5 r8 q; w5 d* `8 N
the emergence of clonal T cell populations, were observed both in one patient- O& |; n g4 p0 y- U. C- [
who relapsed and in one patient in remission. Our results suggest that the
2 V# ~6 f: k: a7 Ncharacteristics of complete molecular response on dasatinib treatment may be( _/ y, Q, W, z" R# r
similar to that achieved with imatinib, at least in patients with adverse; Z* y) V9 I& j# d
disease features.
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