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。
' y) B- q9 W& Y: \ 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。
9 N: t/ N3 C. n" U+ K/ ~, n4 G5 I 2 S* o- V0 j! q9 M7 Q
作者:来自澳大利亚
% D0 H) ]4 [1 v% @来源:Haematologica. 2011.8.9.3 y/ r* o7 l+ ]; N6 R. z8 F% ]
Dear Group,
: D$ {6 W, Z) L8 Y* H, F
9 k& u# {$ D+ j$ U4 r5 Z4 XSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
4 v R' }! z+ V" L/ qtherapies. Here is a report from Australia on 3 patients who went off Sprycel
( C9 Z% M- {- |after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients& C8 T4 m1 ]1 Y7 M. v0 k
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel0 s o$ O6 _( r$ H
does spike up the immune system so I hope more reports come out on this issue.: P( k% h+ s" c- J( w2 v) O0 V5 C
6 |/ ~; E, e' u
The remarkable news about Sprycel cessation is that all 3 patients had failed6 r6 S d3 S7 L U( @1 k/ y
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
! M1 _0 {9 l& l' d2 }" w/ jdifferent from the stopping Gleevec trial in France which only targets patients
4 ^- @3 ^2 Q" Rwho have done well on Gleevec.
7 R. ~. A6 t* l6 D" N5 n: o6 H7 h
Hopefully, the doctors will report on a larger study and long-term to see if the
( ^+ ?+ M* J2 m5 ]8 gresponse off Sprycel is sustained.
. \2 d3 [# D- Y, G2 T- N" v4 @/ D% m0 ]
Best Wishes,
2 @$ y! i. s8 LAnjana+ T$ H" D. F0 U" ?" f5 k$ W
. Y; v9 f# k; E' G& V3 y2 c V! F! |& v. x
: O7 T1 x- y4 z3 Z& J6 RHaematologica. 2011 Aug 9. [Epub ahead of print]8 B; t, k! D' q/ Y* C1 x; u& t
Durable complete molecular remission of chronic myeloid leukemia following
# I0 o, @& _- Z# T2 ldasatinib cessation, despite adverse disease features.
; g. C" R9 V3 f9 VRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.( r( h; b9 I: W V3 l& S, A6 E) {9 |
Source
4 o2 h: r+ {1 k- nAdelaide, Australia;' |, b+ l) o4 _. Z5 x
1 a2 T6 z$ W* g3 ?& x$ P, Q
Abstract
' z9 v- Q5 P2 x+ S: P0 q7 ?/ kPatients with chronic myeloid leukemia, treated with imatinib, who have a. M# u7 S2 S6 r3 @' h# {/ A
durable complete molecular response might remain in CMR after stopping
, D6 M' Y" ~7 Ttreatment. Previous reports of patients stopping treatment in complete molecular
9 {3 m+ ]) D8 @response have included only patients with a good response to imatinib. We
1 U8 ?/ H8 a! n' b% Bdescribe three patients with stable complete molecular response on dasatinib+ H- W1 t1 H) U d* w
treatment following imatinib failure. Two of the three patients remain in
4 M/ `' b+ B, c; {4 T5 Ocomplete molecular response more than 12 months after stopping dasatinib. In& d7 Q( E, [9 i( ^+ z
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to- a4 `: {4 _2 s: H9 U _, b! p
show that the leukemic clone remains detectable, as we have previously shown in
$ a" T0 f; J( A2 B# |imatinib-treated patients. Dasatinib-associated immunological phenomena, such as [; _7 o2 g. r8 s: q
the emergence of clonal T cell populations, were observed both in one patient& P* ?# Z }. D- b( c* r7 y
who relapsed and in one patient in remission. Our results suggest that the
; Q8 N9 Q, L, `* `. M6 @characteristics of complete molecular response on dasatinib treatment may be/ [0 `' j# c1 i' T
similar to that achieved with imatinib, at least in patients with adverse
% p0 o' a% T9 Wdisease features.
, ^ U& w2 \5 I7 J& @5 ]% p4 z- N |