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。7 N( Z, v- S9 z$ s, f
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。( f; q5 D3 |: d7 b, P7 S
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作者:来自澳大利亚& i! w) d7 e8 E1 n1 J$ s1 F( ` h: l
来源:Haematologica. 2011.8.9.# F1 J+ l+ w; z- Y' c v( E, @+ [9 w
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
! }1 `. ]0 `, r0 d( stherapies. Here is a report from Australia on 3 patients who went off Sprycel# v1 k4 s! \9 v7 z3 J! a
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
+ O& t) v7 ^4 E5 f3 V2 fremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
$ \$ V( s9 Y9 s! v+ i! i9 ~does spike up the immune system so I hope more reports come out on this issue.
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( F# C5 A# J' t0 V: nThe remarkable news about Sprycel cessation is that all 3 patients had failed% w" ~! b# ~* F7 k R* j; l0 H: l
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
" K+ I1 T* ?. q- x7 [different from the stopping Gleevec trial in France which only targets patients
# F9 n* P: N! w: j8 swho have done well on Gleevec.8 s3 y2 v7 z; c( @& Q1 ?
5 p; z, c/ Z0 d/ C; b% E5 w5 [Hopefully, the doctors will report on a larger study and long-term to see if the( A" y! X* ]! j! K
response off Sprycel is sustained.
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Best Wishes,. l+ s: d. Z ]
Anjana
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% j1 U& E! i7 n& f4 V/ HHaematologica. 2011 Aug 9. [Epub ahead of print]8 O9 v1 W0 l0 g @) g f
Durable complete molecular remission of chronic myeloid leukemia following0 ]% @! l7 O- B. y& K) x( F
dasatinib cessation, despite adverse disease features.1 C$ S: H! u% D# g- k
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.7 v4 c- C$ F- R( P) P Z7 r
Source
, _( a9 i( s! Q3 }Adelaide, Australia;
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Patients with chronic myeloid leukemia, treated with imatinib, who have a# X$ n+ g) ?$ L8 T' q
durable complete molecular response might remain in CMR after stopping
6 P# n7 X1 v; y* c. c1 Y0 Htreatment. Previous reports of patients stopping treatment in complete molecular
2 t- w# s6 }7 i: ]" C- s* aresponse have included only patients with a good response to imatinib. We
# p# J2 l1 C! u# b/ e9 j/ Bdescribe three patients with stable complete molecular response on dasatinib
: ?2 j6 l" s4 h; @1 w3 b3 ftreatment following imatinib failure. Two of the three patients remain in5 x; O+ ~1 o; I
complete molecular response more than 12 months after stopping dasatinib. In6 u( |% F/ i7 x7 h
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
- f8 D) V, Y; A. g5 @" oshow that the leukemic clone remains detectable, as we have previously shown in
- l6 f) C, g, U; m) T8 Limatinib-treated patients. Dasatinib-associated immunological phenomena, such as1 s; L# S; j2 \' C4 W
the emergence of clonal T cell populations, were observed both in one patient, R. k' {$ s4 X! W. L# o7 S" L9 Q
who relapsed and in one patient in remission. Our results suggest that the
. \, \4 A) g8 Y" H' X, N+ Hcharacteristics of complete molecular response on dasatinib treatment may be, ?5 _; ?0 L# U$ g/ X
similar to that achieved with imatinib, at least in patients with adverse& p9 v3 H; ?5 q' E5 I5 V
disease features. a6 T/ T& L! z4 b+ p
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