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。3 J* ]( g1 s$ B. ~' i
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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+ C N) N: C; v, N* g作者:来自澳大利亚
* Z+ n4 m; a8 b' M0 U来源:Haematologica. 2011.8.9.2 B+ u& o# k% x8 P% M' d# U
Dear Group,% K3 R% r% d: z. W
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
/ T- H, M$ ]% M j A$ X Wtherapies. Here is a report from Australia on 3 patients who went off Sprycel
* x8 P. @7 |- s( ]/ f6 z; A& Y! S" Y+ yafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients4 o# U4 G: D. t0 Y- f
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
8 j% k3 N! f1 Q" O9 i3 {, f2 N* mdoes spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed; l' c3 Q0 k! S: V% A7 ]
Gleevec and Sprycel was their second TKI so they had resistant disease. This is" X- m+ g, `2 N, V% o0 h5 e
different from the stopping Gleevec trial in France which only targets patients+ I, ^" o- t a: a; J5 Y- m
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
) }1 d# ^' o ?! T: N Presponse off Sprycel is sustained.
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Best Wishes,
* {! p4 r# ^- \5 [: J' }Anjana% \/ {* e E/ Q2 a0 }0 g, k% j8 q
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Haematologica. 2011 Aug 9. [Epub ahead of print]5 z8 f. X D2 t& K @0 `0 E! }
Durable complete molecular remission of chronic myeloid leukemia following# Q: u) M6 e1 |7 n$ @; }0 B
dasatinib cessation, despite adverse disease features.2 j5 e) H( K/ h" Z6 Y
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
3 i8 x2 E& c6 WSource( |# a. ?0 L% M5 l1 H+ }
Adelaide, Australia;
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! \8 ?/ A" I/ \+ i1 D1 BAbstract; C9 p3 B0 D4 e1 t7 q+ K5 ~: w( C
Patients with chronic myeloid leukemia, treated with imatinib, who have a3 ?, c ?( E1 c& l
durable complete molecular response might remain in CMR after stopping
& z& K& |* b3 V0 d4 Q7 Wtreatment. Previous reports of patients stopping treatment in complete molecular7 |) X1 f% n4 v9 u! N
response have included only patients with a good response to imatinib. We
q: ?. g* e3 X/ o2 g Odescribe three patients with stable complete molecular response on dasatinib% b/ I. ~+ E0 z G2 e& s9 k
treatment following imatinib failure. Two of the three patients remain in z. [# H! U% _3 h4 f7 S
complete molecular response more than 12 months after stopping dasatinib. In. g8 F& ^* C- |/ v
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
" {4 \( J2 C! R+ Eshow that the leukemic clone remains detectable, as we have previously shown in* e# Y3 P& }9 v' I2 I/ {
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as8 O. f, n- z9 X) |% o
the emergence of clonal T cell populations, were observed both in one patient3 t& c! a/ E; }8 S3 P" B u
who relapsed and in one patient in remission. Our results suggest that the
+ y+ x5 n9 ^ j5 l' }! wcharacteristics of complete molecular response on dasatinib treatment may be
! \' P+ L( r* M/ _, t i& Ksimilar to that achieved with imatinib, at least in patients with adverse
) f1 u+ A/ ]- V& o/ X$ ]: N- Bdisease features.0 ~1 H; R* Q( h( U
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