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。
% C$ t" A X) A' h- h 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。5 @& d! p. a! [1 O" X5 r& y$ ]- `
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作者:来自澳大利亚
2 `' A2 l- \, i0 U4 |来源:Haematologica. 2011.8.9.( g O8 v* ]; _! r
Dear Group,- F0 w5 n2 W* h
( ]) j4 Y' ~- o# ]2 t" h
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
& \. E3 N) \% j+ r3 _therapies. Here is a report from Australia on 3 patients who went off Sprycel" O' D/ Q! Z, S J8 o; ^% F3 r
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
' J$ Q+ z4 i# F7 o' s2 Hremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel5 G6 j% Q5 l8 _8 q, B/ y5 B g
does spike up the immune system so I hope more reports come out on this issue.+ B q8 o( \! E2 S- x
( j6 k% y! v& L9 H3 q g& M# AThe remarkable news about Sprycel cessation is that all 3 patients had failed
4 Y0 G6 F* c, f& w( U' I. fGleevec and Sprycel was their second TKI so they had resistant disease. This is3 T9 h4 A" H* Q/ U" I) \% C
different from the stopping Gleevec trial in France which only targets patients
# y. l1 E4 A M. a5 }6 gwho have done well on Gleevec.6 l3 w/ h+ y4 P! u! q( {. ?
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Hopefully, the doctors will report on a larger study and long-term to see if the
/ e9 t; A: }1 f: t, x# O: hresponse off Sprycel is sustained." Y& k$ u1 W$ q* m4 Z
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Best Wishes,( H/ j% n- d7 W6 @
Anjana
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Haematologica. 2011 Aug 9. [Epub ahead of print]9 O _, f2 b" B7 I/ l
Durable complete molecular remission of chronic myeloid leukemia following
B5 r2 Q, k; K& K5 Q' f" Cdasatinib cessation, despite adverse disease features.& B" K7 G8 b, _$ e! b: Q
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
\( _( P' b. A# z/ u+ p% YSource! b$ N1 h" k0 ^/ u% i
Adelaide, Australia;
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Abstract
5 I. X6 F- ^* q: G2 ZPatients with chronic myeloid leukemia, treated with imatinib, who have a2 [( C5 T1 }! L2 [# Y
durable complete molecular response might remain in CMR after stopping* D5 ^( W( u5 i9 w& P1 Z2 `/ r6 }6 o
treatment. Previous reports of patients stopping treatment in complete molecular
! j& {2 ]# F9 y* Aresponse have included only patients with a good response to imatinib. We
, ~: w q5 m) F- h! R) Ldescribe three patients with stable complete molecular response on dasatinib& _3 a/ S2 J5 P& W2 m
treatment following imatinib failure. Two of the three patients remain in
2 C2 @, n2 W% Kcomplete molecular response more than 12 months after stopping dasatinib. In
( ^/ ]" r; c% H: A0 g3 o8 Vthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to) {( Y& w4 p3 c0 E! S6 l% D
show that the leukemic clone remains detectable, as we have previously shown in+ U# g2 n. u1 f% l$ S9 A W' c
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
# T T4 U7 p% N7 T Cthe emergence of clonal T cell populations, were observed both in one patient
0 ]; b6 B8 k2 c3 d. m: a( U( Xwho relapsed and in one patient in remission. Our results suggest that the
* N+ | v4 ?7 F0 E2 |( o) Y3 M- Mcharacteristics of complete molecular response on dasatinib treatment may be
7 }; L1 b$ x& w) c4 Isimilar to that achieved with imatinib, at least in patients with adverse
& k! S) S8 i4 p# b$ A7 W1 a% `disease features.6 [7 h1 k% \5 M0 m
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