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。
i8 @9 Z' s" k \+ t& P 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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作者:来自澳大利亚
1 D, s4 n4 v! r来源:Haematologica. 2011.8.9.
) M" c, o1 L) G/ zDear Group,. F' t7 L9 d& r% B1 k/ t/ F! d$ T% B
3 z2 m6 a; ?& E3 t5 a( h9 OSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
8 A. P/ v1 l, ~/ l. J; Qtherapies. Here is a report from Australia on 3 patients who went off Sprycel* v) ]" F: B3 Z
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
5 n! {1 A. {+ Aremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
+ v+ {+ I$ B5 x# h4 e" bdoes spike up the immune system so I hope more reports come out on this issue.0 R; Z; e( c* F4 k
4 B' X% U+ Y* }; G! w
The remarkable news about Sprycel cessation is that all 3 patients had failed5 r- p; L- M' I2 ]# M( |0 V
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
0 ^5 b% ~0 ?- o* tdifferent from the stopping Gleevec trial in France which only targets patients, h p6 r) @% v
who have done well on Gleevec.
+ J* v/ [+ _( i, R
4 `1 v" \# M4 i/ v2 Z5 sHopefully, the doctors will report on a larger study and long-term to see if the
+ t) k+ i( g7 \5 K% V6 rresponse off Sprycel is sustained.
# T0 H g5 W- J0 f* A- |
3 C9 N2 {6 C8 l+ ^% }* I% ^) }, \Best Wishes,* w! i4 A, T. S
Anjana" F4 X( t; h+ C% K+ \: K
# P, D- t& y4 _- D/ e- i ~( J1 Y* l, f$ ?
' A6 |) T; g) i! K1 M, nHaematologica. 2011 Aug 9. [Epub ahead of print]
0 B9 J, J+ l. Y% D, TDurable complete molecular remission of chronic myeloid leukemia following$ \! W, H6 D1 A3 W% q) ~. `% i
dasatinib cessation, despite adverse disease features.
6 J! b a6 x( t+ W0 VRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
7 n$ ?/ ]' B; S, ~- ~5 u8 k+ @3 ~Source. w+ c9 ^! @% X/ B4 ^3 J
Adelaide, Australia;9 w* s- B/ J ~- R4 `
8 S/ V( w2 l, p. aAbstract
9 f% g8 L* e5 RPatients with chronic myeloid leukemia, treated with imatinib, who have a0 s1 c G3 Y- m
durable complete molecular response might remain in CMR after stopping. u9 \% Q" N$ k+ @2 g6 q% q
treatment. Previous reports of patients stopping treatment in complete molecular
- Q4 O6 M( \" X+ Mresponse have included only patients with a good response to imatinib. We. H& U( L' C5 S2 U5 R- ^
describe three patients with stable complete molecular response on dasatinib
, E* }6 m% r+ v/ Y: K7 M8 V5 Streatment following imatinib failure. Two of the three patients remain in
8 ` F# b& M9 U0 t, C2 gcomplete molecular response more than 12 months after stopping dasatinib. In0 v( a8 H# s7 t* y
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
. H6 j. n) Z: h# Q0 b% g9 s. u! Sshow that the leukemic clone remains detectable, as we have previously shown in
. `8 n7 ?# w# S/ oimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
9 q1 a( [" t8 a0 `8 p2 e6 b* Q# f0 bthe emergence of clonal T cell populations, were observed both in one patient
$ g3 i4 }! R5 G( dwho relapsed and in one patient in remission. Our results suggest that the, y8 x/ p j/ s
characteristics of complete molecular response on dasatinib treatment may be
2 b, c- l# e. z% h* N4 c0 h) Y# ~similar to that achieved with imatinib, at least in patients with adverse* a; Y2 g& T: \' B
disease features./ s; E3 u: N. P$ \8 L
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