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。
]% ], }% l/ E7 l' N" E/ T 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。: J( Y/ B( L* ~7 o9 D9 g
! z |% H, J! R6 s: o/ {8 X: l作者:来自澳大利亚9 J2 O* l8 @( H0 x- d( ~
来源:Haematologica. 2011.8.9." Q- k1 b' l; z: y
Dear Group,! [1 j' \. H1 u4 B" J
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
% G0 Z: q5 O/ G+ g. \' ^: h2 N4 [therapies. Here is a report from Australia on 3 patients who went off Sprycel) |( i" _' R5 R
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
' \' y( M3 o% D! w u% K! A/ O vremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
- `2 \( O. R. H8 ]9 bdoes spike up the immune system so I hope more reports come out on this issue.+ c0 B' C: P, A4 B
1 Z! O' @0 g, k; O5 m, f( Z2 \The remarkable news about Sprycel cessation is that all 3 patients had failed
4 ?5 W% F2 _2 RGleevec and Sprycel was their second TKI so they had resistant disease. This is; r3 W0 d8 E. o
different from the stopping Gleevec trial in France which only targets patients0 A& F/ w- r0 K- G2 J" V/ I9 {
who have done well on Gleevec.8 s$ h- B0 d; X2 w: H0 B0 ^
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Hopefully, the doctors will report on a larger study and long-term to see if the
5 i" W. o; j) B, y9 D1 |response off Sprycel is sustained.
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; F. B2 n* U1 w- `. G% qBest Wishes,( ?% c: ^5 n+ Z0 W9 o" J1 C; y9 L
Anjana
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& V6 J% d/ Q: R) s9 y/ R+ bHaematologica. 2011 Aug 9. [Epub ahead of print]
% l9 ^/ i+ I* r2 ^+ ~* eDurable complete molecular remission of chronic myeloid leukemia following; x% G$ g- H" u
dasatinib cessation, despite adverse disease features.
9 `8 `6 q; f! C5 ~. Z6 n' \Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;& v1 q- w! n) O/ z
1 l5 q! W! t1 r; Y$ C/ w% yAbstract
4 `; p$ a# Z: N( J& K: p+ bPatients with chronic myeloid leukemia, treated with imatinib, who have a
( [9 Q4 j$ c% E0 l6 e; vdurable complete molecular response might remain in CMR after stopping
9 I# x3 d+ R4 N1 A8 utreatment. Previous reports of patients stopping treatment in complete molecular
" D! v6 M; S* a- `8 R7 Tresponse have included only patients with a good response to imatinib. We* s2 f; _- {0 @
describe three patients with stable complete molecular response on dasatinib
& I$ \! S7 A$ J3 ^treatment following imatinib failure. Two of the three patients remain in4 S8 d: W$ i. g7 E
complete molecular response more than 12 months after stopping dasatinib. In) }( R, ^, |. v2 J% Y+ P
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to. P6 }! }8 O9 T5 S; J
show that the leukemic clone remains detectable, as we have previously shown in" S- x5 E, |% f& M, w& c
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as( e/ F4 ] o. k. E) k* F
the emergence of clonal T cell populations, were observed both in one patient% J- w5 J& w }; p
who relapsed and in one patient in remission. Our results suggest that the
. P7 b0 p2 W$ P+ t% tcharacteristics of complete molecular response on dasatinib treatment may be* N' \' I' h+ H: i5 m6 ~
similar to that achieved with imatinib, at least in patients with adverse q7 x& N$ @: d0 w
disease features.
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