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。7 Z- v8 |9 q& Q8 }* 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。7 S; z9 c' y# R" R; n
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作者:来自澳大利亚) G5 O9 K$ U) y' D. n
来源:Haematologica. 2011.8.9.! P& x! Y# ?$ j1 O
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML* ~- z& G0 ?! v/ f2 F6 C
therapies. Here is a report from Australia on 3 patients who went off Sprycel
2 @- J& y" h& i5 C+ s- Yafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients& D. {( ~/ L! v% \5 ~
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
# _) a: L2 b+ T/ Y4 V3 adoes spike up the immune system so I hope more reports come out on this issue.
6 a1 u: F6 p' p- G, j: L
4 Z& M9 ?9 t+ u* x8 ]The remarkable news about Sprycel cessation is that all 3 patients had failed
. R A+ I$ E" U6 g: |& hGleevec and Sprycel was their second TKI so they had resistant disease. This is: i% u" U% Q: ^
different from the stopping Gleevec trial in France which only targets patients! D, Y7 X0 r1 Q/ {
who have done well on Gleevec.
3 W) \+ A! l0 \* K" f
2 ^' ^3 G+ k0 Z4 WHopefully, the doctors will report on a larger study and long-term to see if the# h7 g2 o2 n5 d8 z, D# v2 R1 h5 {
response off Sprycel is sustained.- L+ ~1 F! Y) M6 v* c1 p( w
( e% c2 J" H2 T: z( |& o; X. _ |Best Wishes,& `" I6 N1 M Z' p/ t' A
Anjana6 g; K# p" b* x( D' {
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8 w# |$ q1 h/ k! C9 l- J/ o7 N/ [* aHaematologica. 2011 Aug 9. [Epub ahead of print]# a* n7 {7 Q m" J' u
Durable complete molecular remission of chronic myeloid leukemia following
- O4 s* q8 n3 ?: D' a7 G# {# Zdasatinib cessation, despite adverse disease features.9 \& Q' X0 @) t/ [# v
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.% B% m6 T5 J+ O
Source$ P/ U5 C: ?; Z# @" U) d1 ]- d
Adelaide, Australia;4 Y) d& [5 \( T) W. ?
. ~# F: M' X. W6 K) nAbstract3 Y+ y m$ Q5 X7 }, z
Patients with chronic myeloid leukemia, treated with imatinib, who have a
& Q5 v/ E3 e( Z+ Mdurable complete molecular response might remain in CMR after stopping5 W) D5 t8 q0 I; a- R! `1 z2 s8 l Y
treatment. Previous reports of patients stopping treatment in complete molecular
5 L, N, s9 }* c9 J2 c7 T5 }response have included only patients with a good response to imatinib. We
9 N* t# c& x2 @4 i g; Ddescribe three patients with stable complete molecular response on dasatinib
7 f$ C& x) l( ~* otreatment following imatinib failure. Two of the three patients remain in
9 z* }- m$ d9 n3 z$ u, dcomplete molecular response more than 12 months after stopping dasatinib. In
( ]' t2 l" ]7 ~- K0 T- I2 q& \these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
& C. N8 R; s; b' X3 A/ X I6 Dshow that the leukemic clone remains detectable, as we have previously shown in$ K* c$ j$ G9 C8 E3 a
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
; U6 P" f q$ g9 M- Lthe emergence of clonal T cell populations, were observed both in one patient% J) r6 j: K/ W
who relapsed and in one patient in remission. Our results suggest that the1 @! k- T* f0 z+ x
characteristics of complete molecular response on dasatinib treatment may be
4 p! e) F8 C7 wsimilar to that achieved with imatinib, at least in patients with adverse+ h) h+ H1 d, `+ V
disease features.
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