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。+ p0 S, W1 J' V& 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。
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作者:来自澳大利亚
" G6 c9 ?1 Y) @来源:Haematologica. 2011.8.9.
6 R8 a9 t0 l# O3 |0 g5 Q. h; ODear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
# ?0 w" ~1 T8 Ctherapies. Here is a report from Australia on 3 patients who went off Sprycel
6 [% K& t E. d$ f' ~. O# d+ Cafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients: G& a0 }4 N4 E: G5 H; y5 S' M4 {
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel% M, w+ c2 a, J
does 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
n2 }, A( v( p0 c4 b' g( N% TGleevec and Sprycel was their second TKI so they had resistant disease. This is
, C. U ~2 S& k# O# \/ n4 V `' edifferent from the stopping Gleevec trial in France which only targets patients
4 {$ Y7 N: m! Gwho have done well on Gleevec.
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) I5 p% D! O. z4 kHopefully, the doctors will report on a larger study and long-term to see if the
n: _7 G$ K# N: q* I2 Sresponse off Sprycel is sustained.
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Best Wishes,8 y7 P2 O: S: j. Y! v8 U( C4 x
Anjana
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7 `* }& W I# U! u; N. d1 SHaematologica. 2011 Aug 9. [Epub ahead of print]: z% w, {. o1 {
Durable complete molecular remission of chronic myeloid leukemia following) ?# Z/ d. y. L6 h n0 l
dasatinib cessation, despite adverse disease features.! g: [; S' h$ u$ V3 B
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.) Y% K$ ]& X x9 {/ K
Source
2 L; h/ o+ n2 C6 ^& \. sAdelaide, Australia;
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Abstract0 s, c* R: _/ P
Patients with chronic myeloid leukemia, treated with imatinib, who have a" k1 K7 Z' Y. X& {/ n- k1 y
durable complete molecular response might remain in CMR after stopping! x. {1 ^+ ~3 o9 b$ G$ x
treatment. Previous reports of patients stopping treatment in complete molecular: ?, ~7 L* i& u+ b$ b) B
response have included only patients with a good response to imatinib. We. Z0 z$ b: D0 v2 Y9 R
describe three patients with stable complete molecular response on dasatinib
: a5 h" h+ l( W- p# Z0 f0 Otreatment following imatinib failure. Two of the three patients remain in- i& \; J; E9 h# Q) c
complete molecular response more than 12 months after stopping dasatinib. In
8 N3 N, G4 \2 @8 sthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
9 E6 f: l" Z8 \7 [! h$ |( dshow that the leukemic clone remains detectable, as we have previously shown in7 ^! _5 h4 r4 V" Q% W, i
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as" [) c l. D5 ~# U& y: [4 x: n
the emergence of clonal T cell populations, were observed both in one patient
* }2 [# v* ?. O$ X4 P4 Zwho relapsed and in one patient in remission. Our results suggest that the
7 H9 E' }3 j" {/ [3 {characteristics of complete molecular response on dasatinib treatment may be
# C% f- T9 L3 ]5 Fsimilar to that achieved with imatinib, at least in patients with adverse
2 L& _# ?9 R' G5 I- e; M( x3 q' pdisease features.
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