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。; G( P, z& f5 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。 U: |8 N: m, N# m5 T
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作者:来自澳大利亚8 f8 q L& `- E1 |8 |9 ]7 R
来源:Haematologica. 2011.8.9.! G3 z& M# u0 Q' D- W
Dear Group,9 n# a, ?5 ?# I0 Q8 K: G/ d2 S
9 F8 Y( \! U' [2 i! j1 dSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
9 |# R" z( |# s) W& Q& H, jtherapies. Here is a report from Australia on 3 patients who went off Sprycel
7 [$ Y" h+ P# \, d) }7 k5 ?; C+ Jafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients' P" e% c* H" d
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel1 r- {8 ?7 f+ ?2 d, I
does spike up the immune system so I hope more reports come out on this issue.# G& v! ~9 }, h. K% ?" h
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The remarkable news about Sprycel cessation is that all 3 patients had failed
7 }" s2 p( G S0 }Gleevec and Sprycel was their second TKI so they had resistant disease. This is7 X2 A7 r# y6 x% g5 \+ A) I" W+ X. O
different from the stopping Gleevec trial in France which only targets patients2 B c( N8 p9 L$ i6 l
who have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the
9 g7 D! V- V5 H8 hresponse off Sprycel is sustained.
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Best Wishes,
, L# h+ v. j) T/ V1 S' EAnjana$ j8 u8 W- p; ?. P+ R# T& P- I4 t
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Haematologica. 2011 Aug 9. [Epub ahead of print]3 M( j/ x: R0 A' Z: k
Durable complete molecular remission of chronic myeloid leukemia following9 S/ q$ T" P4 ~( z
dasatinib cessation, despite adverse disease features.
5 C; ]8 {) n6 ], s! t9 W) ]5 ^Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.- c+ w% H; j! x7 Y
Source
, M$ f, i% ?$ ]( ]Adelaide, Australia;
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Patients with chronic myeloid leukemia, treated with imatinib, who have a
2 N% q: G# K8 c! S' r. [0 odurable complete molecular response might remain in CMR after stopping
& v+ {4 }; B. ]( P0 Dtreatment. Previous reports of patients stopping treatment in complete molecular
4 p/ J+ i& U0 x* H: Kresponse have included only patients with a good response to imatinib. We3 H' A+ ]5 ?" L3 N9 m% o' ?) M# ?
describe three patients with stable complete molecular response on dasatinib7 _' P/ m! A: b- |* [5 P
treatment following imatinib failure. Two of the three patients remain in0 D+ c, j9 G$ [' l+ s/ i
complete molecular response more than 12 months after stopping dasatinib. In" H" Y4 t# A2 Q. \% q" |, O
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to( h! Z8 F; ]# ^
show that the leukemic clone remains detectable, as we have previously shown in: U# I" g# d8 F& F
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
I* I% }- J$ A9 ~the emergence of clonal T cell populations, were observed both in one patient$ @" y/ K- {: m1 ?
who relapsed and in one patient in remission. Our results suggest that the
2 e1 a; T9 P' |8 Fcharacteristics of complete molecular response on dasatinib treatment may be
8 _; F ?% w. h, s5 Hsimilar to that achieved with imatinib, at least in patients with adverse
% T7 Y" H% \9 i+ M' Ldisease features.
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