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。
% H- W- d, g8 P9 ] 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。! g4 S( I/ a7 @( G7 Y& Q
# y& Z+ t3 v& g1 h作者:来自澳大利亚
! A% k& d9 l1 {) L* P. N来源:Haematologica. 2011.8.9.5 n6 J6 H) X+ h" F& [5 O
Dear Group,+ c. S9 b) ~# X, s7 F0 \
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
/ c, ^" H4 @7 L4 T9 o/ Gtherapies. Here is a report from Australia on 3 patients who went off Sprycel) Z: s8 f6 O( ^ p& @1 r8 v
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
6 V, e# i# c4 h/ fremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
) A& S/ b& D- y1 G: Gdoes spike up the immune system so I hope more reports come out on this issue.. Z' z1 q' X4 J1 S
, ]! K6 B7 i. T& F9 I5 sThe remarkable news about Sprycel cessation is that all 3 patients had failed' K7 ]4 ?& q; f8 b2 @$ z5 s, R
Gleevec and Sprycel was their second TKI so they had resistant disease. This is: z- v! ]% W Z+ U. _
different from the stopping Gleevec trial in France which only targets patients
; V, U+ n+ y1 V- i3 m4 n: C, Pwho have done well on Gleevec.
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3 x0 h! H9 a# N/ d* R4 jHopefully, the doctors will report on a larger study and long-term to see if the
; p4 L9 F6 i6 ~% oresponse off Sprycel is sustained.
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Best Wishes,% F$ E. c* ^! T/ n8 Q& n! R
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]7 V2 i+ {7 X) z" n; O; X
Durable complete molecular remission of chronic myeloid leukemia following
' t% _/ ]% \" Z, ~; }2 W1 \dasatinib cessation, despite adverse disease features.6 w) _) h# g5 V' l2 V
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.( X' @, D& O) P
Source
, V: t: S5 G* u @0 n, B! HAdelaide, Australia;
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Abstract1 I+ q+ G h% A( E4 a
Patients with chronic myeloid leukemia, treated with imatinib, who have a" W# |1 k9 R) }5 @4 i; r5 b
durable complete molecular response might remain in CMR after stopping' h% U3 b2 Y# m& U; L
treatment. Previous reports of patients stopping treatment in complete molecular
1 |) [# e* D) Presponse have included only patients with a good response to imatinib. We% U8 ^9 i+ a& E
describe three patients with stable complete molecular response on dasatinib6 W! w4 ] n( b2 T/ ?
treatment following imatinib failure. Two of the three patients remain in
; M2 q7 k/ x1 |; M& fcomplete molecular response more than 12 months after stopping dasatinib. In. p j' a j* ?1 c0 [
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
' ~& E: I( C0 A# c8 t& n6 Nshow that the leukemic clone remains detectable, as we have previously shown in- t; `3 @7 ~1 J0 {3 j7 D3 H2 O
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as% _6 _' J( x2 q% _) R
the emergence of clonal T cell populations, were observed both in one patient
5 \3 _- o' }9 O/ t8 C) D4 Mwho relapsed and in one patient in remission. Our results suggest that the
0 `& w2 u7 t$ h5 J7 Ucharacteristics of complete molecular response on dasatinib treatment may be& Z* L- ]+ {) _! x
similar to that achieved with imatinib, at least in patients with adverse
" S6 P8 G- A4 Z6 xdisease features.
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