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。
' |( B" q- ]7 o 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。8 Q b9 h) S) J3 C. Z% w/ y
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作者:来自澳大利亚
, J2 ]! `. w$ V3 L9 \9 m来源:Haematologica. 2011.8.9.. _, ^! O- n! |8 U* a4 l( d; X2 P
Dear Group,3 u) v7 i; ^! |# G) `1 p
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
7 J7 ^, |. \9 [# c/ i7 n0 P5 ?therapies. Here is a report from Australia on 3 patients who went off Sprycel2 o7 y) ^6 V( S6 t
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients* B$ }# r( d4 t. ] L% U; o
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel6 g, s2 e; Z* X' Z+ Z5 ~; C
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
1 @2 @- _# L" Q) sGleevec and Sprycel was their second TKI so they had resistant disease. This is
) Y, D M! { K2 |/ w% zdifferent from the stopping Gleevec trial in France which only targets patients: {9 R# \7 n; b: e
who have done well on Gleevec.& Q8 c+ r' M5 ]* `) S. a5 z
3 ?$ A: t2 I3 iHopefully, the doctors will report on a larger study and long-term to see if the
' K+ O& U0 a% A: N4 \1 ~! n7 Rresponse off Sprycel is sustained.
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4 U0 ?8 R1 y) q9 R5 pBest Wishes,
' C: Y+ R$ _! J1 ^! B- TAnjana' R# T( r* ?' r5 T; z
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Haematologica. 2011 Aug 9. [Epub ahead of print]
/ f2 ^& n; v) ~ ] YDurable complete molecular remission of chronic myeloid leukemia following- x$ z& i9 W9 n n+ G& Z
dasatinib cessation, despite adverse disease features.
+ S0 u6 \! } Y4 q6 A3 L9 WRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
. C2 O3 J4 [3 |1 RSource' R3 R$ O# P; ~4 A, E5 n1 ^
Adelaide, Australia;/ E0 z% f' o( n& N' m! ?
9 H. `3 p; O( c9 \5 HAbstract
. J+ \! Z. I5 I* c" }Patients with chronic myeloid leukemia, treated with imatinib, who have a$ U% O/ Z( \7 x% F' c6 K4 E
durable complete molecular response might remain in CMR after stopping
; n: M5 o/ D9 d4 y S% otreatment. Previous reports of patients stopping treatment in complete molecular
. z& v+ {$ [/ |4 \response have included only patients with a good response to imatinib. We n0 h& S; n7 c7 v6 x
describe three patients with stable complete molecular response on dasatinib
/ h9 k5 r9 f0 q* R o2 d- b/ Btreatment following imatinib failure. Two of the three patients remain in
. l7 S8 o. E+ ~; h* \0 J/ V% Pcomplete molecular response more than 12 months after stopping dasatinib. In3 ^" d- M+ L T; {; r5 G8 ]6 t( P8 ^
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
4 y: Z, s2 H4 T! [! Lshow that the leukemic clone remains detectable, as we have previously shown in
% L& ^- w. Y% B4 ~* ~imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
6 ^+ S* E, K# m3 u" Y2 ~the emergence of clonal T cell populations, were observed both in one patient# Q( N4 V" U; Q1 a1 g
who relapsed and in one patient in remission. Our results suggest that the
$ i$ D* y P/ dcharacteristics of complete molecular response on dasatinib treatment may be
: U4 I" H, c$ m$ g- Osimilar to that achieved with imatinib, at least in patients with adverse* d! Q: W4 W" s6 |/ s( q
disease features.
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