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。$ n' m* E( w: C/ T4 }
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。' v/ k2 d# n s4 C" C! B/ R# E. C
z" s; M, a2 @- u2 U- y作者:来自澳大利亚
8 t1 m6 @) y% m4 ?+ @( e8 V9 l来源:Haematologica. 2011.8.9.+ Y6 q1 e2 h2 r1 M. [# G I% O! E
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML, n: Y9 J7 S# f) R( Y. A
therapies. Here is a report from Australia on 3 patients who went off Sprycel
2 b+ ?6 q. E+ {# A% Wafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients' ]3 f# ?' o7 q( m* f
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel' _. W: ]6 |. B+ s- e
does spike up the immune system so I hope more reports come out on this issue.! U' k8 m1 r E
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The remarkable news about Sprycel cessation is that all 3 patients had failed
3 N* X% n+ O, s5 j, mGleevec and Sprycel was their second TKI so they had resistant disease. This is- s6 _& d: F: N9 b. L
different from the stopping Gleevec trial in France which only targets patients- J. X' ~5 d5 y8 X
who have done well on Gleevec.
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6 j" {3 C5 |- c+ \, pHopefully, the doctors will report on a larger study and long-term to see if the
: }2 u2 {/ [7 ?; Hresponse off Sprycel is sustained.' H% D6 N- P% B8 I& m
# l' m- q/ T6 P) l7 ]5 P# dBest Wishes,- F& e9 t v7 m* j+ T* ]
Anjana
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3 x8 C. C0 [- N- v
% y. V1 a) p$ Q0 c/ l' {5 r ?& m; THaematologica. 2011 Aug 9. [Epub ahead of print] k" W, N; p9 H: D2 j
Durable complete molecular remission of chronic myeloid leukemia following
( D9 i5 ^/ ]% A# L" b' \# Jdasatinib cessation, despite adverse disease features.6 `) \" i- m: n# c9 F9 |
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
% ^; m/ @6 n) s2 G! X' N! S' F% [Source
' Y6 h$ @ g6 q( d/ MAdelaide, Australia;
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Abstract' z4 o% B, Y4 c' t, b8 |0 d
Patients with chronic myeloid leukemia, treated with imatinib, who have a
8 X L6 Z4 L7 z0 }: C7 k8 _$ b7 I) L0 Mdurable complete molecular response might remain in CMR after stopping% B" |- j* \5 N3 e
treatment. Previous reports of patients stopping treatment in complete molecular0 Z' R7 m9 i1 c" m
response have included only patients with a good response to imatinib. We( l1 [# g3 d7 V( D, n( Z0 g( G
describe three patients with stable complete molecular response on dasatinib0 z+ t/ t" f* w2 x% r( L% V
treatment following imatinib failure. Two of the three patients remain in% A9 \( A% a9 p
complete molecular response more than 12 months after stopping dasatinib. In; F$ z" q5 I+ f! D/ F( n. ?+ \
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to+ D4 s5 q) O, m6 d8 c6 d7 |# t6 e% l
show that the leukemic clone remains detectable, as we have previously shown in( g% V& N+ W, _
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
1 {3 w; ?( G9 ~ ]! `' w8 x- Rthe emergence of clonal T cell populations, were observed both in one patient* w6 x0 _' ?2 D7 u6 o9 u o1 h
who relapsed and in one patient in remission. Our results suggest that the
) |- u# j. A% k9 e( v2 E7 B; kcharacteristics of complete molecular response on dasatinib treatment may be% ]) S Z% L5 B/ @! b
similar to that achieved with imatinib, at least in patients with adverse$ B2 W) X" n) c! |8 P
disease features.) Y$ |( a* D3 f: c0 c: m9 R
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