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。' {6 c$ x l* }0 F( C2 o% d$ g
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。# U1 U6 c5 q/ w; Q8 |. ^6 b
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作者:来自澳大利亚5 E! H2 q4 J$ ]4 g3 w( ?
来源:Haematologica. 2011.8.9.7 S# Q, _* g5 l% }9 u4 `" X
Dear Group,& t# K% V" p5 z* I% s
6 r" S, ~7 N4 z: [Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
% j; p7 u+ A0 f7 e/ {therapies. Here is a report from Australia on 3 patients who went off Sprycel" Y% S! Z% ?5 w4 X: ]0 v
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
1 l( |- e4 V2 I m W0 Bremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel u, H3 z" V/ h. x4 v, W
does spike up the immune system so I hope more reports come out on this issue.4 A# s( o" b7 K6 E" q/ H
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The remarkable news about Sprycel cessation is that all 3 patients had failed
8 c0 ]5 \* `0 ^8 ~9 z, g7 GGleevec and Sprycel was their second TKI so they had resistant disease. This is E9 {' u6 k+ R
different from the stopping Gleevec trial in France which only targets patients
: k& ~% v3 g7 E) L/ m/ G; ]who have done well on Gleevec.3 Y) S" t: i! S& i$ P8 `. B& |1 o
+ p6 j/ V6 Z$ k$ y# b; H( f5 P4 N
Hopefully, the doctors will report on a larger study and long-term to see if the. I! j! c& ]; O" a8 u
response off Sprycel is sustained.
1 y5 K' \# V6 o5 m/ b8 S3 q$ ?- F+ f% D' R7 c
Best Wishes,0 h9 z& @8 P* C% O/ S' R' H
Anjana2 ^7 e' D( V: b8 C9 S1 i' x
8 a: Z j8 `& R" ^4 A' j. v+ `: r6 v3 R
) e! K8 ^- A* c) d$ {5 BHaematologica. 2011 Aug 9. [Epub ahead of print]1 f; e# C8 y; l1 |
Durable complete molecular remission of chronic myeloid leukemia following
% ~/ b/ Z7 n. L# [1 ^8 sdasatinib cessation, despite adverse disease features.
9 T, z7 [4 a3 @5 e. I& x( fRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP., Y6 x. a; \8 A* w( S6 k
Source: i$ e' Z- _7 K! z$ @" _1 v6 }
Adelaide, Australia;
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' T' U- D6 F* ]& e$ `. k6 L- m fAbstract
: T# `/ g* x4 V' @Patients with chronic myeloid leukemia, treated with imatinib, who have a6 X1 v2 C- {, ^. W9 a3 Z* O
durable complete molecular response might remain in CMR after stopping! t9 Y+ G' e& {# k) ~$ W# F8 b
treatment. Previous reports of patients stopping treatment in complete molecular
: A9 w: C( S; U& I; l; d' {response have included only patients with a good response to imatinib. We ^ ?8 \/ H2 _ u- B6 N* r0 Z& o
describe three patients with stable complete molecular response on dasatinib
! s7 ~5 H+ |$ o0 otreatment following imatinib failure. Two of the three patients remain in) y6 I7 a' p/ u
complete molecular response more than 12 months after stopping dasatinib. In
' N4 W6 V/ U% O2 L8 Qthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to' s+ R3 H y1 w# z ?
show that the leukemic clone remains detectable, as we have previously shown in
( t+ e+ r- ?, [# ^; l' [imatinib-treated patients. Dasatinib-associated immunological phenomena, such as! X: F1 Y8 P0 l( T5 I/ b
the emergence of clonal T cell populations, were observed both in one patient; n5 }+ z, _7 z
who relapsed and in one patient in remission. Our results suggest that the
! k) X: f- A9 J# rcharacteristics of complete molecular response on dasatinib treatment may be
. g9 G. U. R/ z. y& Rsimilar to that achieved with imatinib, at least in patients with adverse
( H- O u: I# j- P: H7 Qdisease features.! E1 J! N: [7 @4 V( g
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