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。, g5 v- G3 W; a4 h
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
: c: o0 ~# t7 k' y来源:Haematologica. 2011.8.9.' k3 k# x B& \! R. b/ p
Dear Group,# ?- @: {8 `' M9 D; ^- h
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML; \3 H M7 S8 V2 D; a9 c
therapies. Here is a report from Australia on 3 patients who went off Sprycel
3 |9 o& Q& Q# l# c+ a" z: P' e( bafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
r4 R) F7 ~( \; ^7 p4 P) p; }$ Rremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
! f% f8 m8 U S O# e# O6 kdoes spike up the immune system so I hope more reports come out on this issue.8 B# N$ Z) B3 {/ V. l
4 z4 Y& J" Y0 I. g- y0 S7 _; wThe remarkable news about Sprycel cessation is that all 3 patients had failed) m( M5 Q4 \, Z q O; {1 x
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
, M5 t/ e" ^& \0 z1 A% Odifferent from the stopping Gleevec trial in France which only targets patients1 ^! v% t; G3 k" D t
who have done well on Gleevec.
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3 D/ Y2 w9 \) _$ m( B8 Z1 XHopefully, the doctors will report on a larger study and long-term to see if the
) ^1 V7 c* Y5 `' Aresponse off Sprycel is sustained.
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8 F+ r5 i1 p2 h7 c+ FBest Wishes,
' x0 I2 K" R* V8 L' x LAnjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]
# r7 @: D3 w" QDurable complete molecular remission of chronic myeloid leukemia following! e5 B3 Q, {2 F. [% Z
dasatinib cessation, despite adverse disease features.
+ m& W$ ^: E4 Q) CRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.3 M# ]6 x/ K) V N& [
Source
8 m. s: H) A: {- n. iAdelaide, Australia;
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3 ^. _: j8 N' {: V& rAbstract0 G! g+ ?0 x$ ~4 s# H" G
Patients with chronic myeloid leukemia, treated with imatinib, who have a
; i7 j, E* Y, |$ H, v, Ndurable complete molecular response might remain in CMR after stopping
! T' [3 `; E- f6 ?& e: v/ H& Gtreatment. Previous reports of patients stopping treatment in complete molecular: |+ D: W, q Q, p3 I2 R
response have included only patients with a good response to imatinib. We
j& y0 t6 _8 ]" j* b- edescribe three patients with stable complete molecular response on dasatinib
9 g) c7 O0 T8 T7 ptreatment following imatinib failure. Two of the three patients remain in
, x1 o8 R9 b) mcomplete molecular response more than 12 months after stopping dasatinib. In) o4 N k1 f; j4 a' k3 G
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
+ M2 g, ?" E" P* x/ W7 Z1 Oshow that the leukemic clone remains detectable, as we have previously shown in
5 M3 k& J( c: v/ dimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
! W5 d/ i) {* z" o0 @) e; bthe emergence of clonal T cell populations, were observed both in one patient
% W7 C$ p2 ~9 g( J4 s2 y8 Uwho relapsed and in one patient in remission. Our results suggest that the6 i- F5 J' N# }- \
characteristics of complete molecular response on dasatinib treatment may be
# c% j' H: K3 m; o- Ksimilar to that achieved with imatinib, at least in patients with adverse
. v( m6 K1 R6 u- D) Pdisease features.
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