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。
, p+ N' l8 i# |9 H4 x2 s/ S) 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。: m5 \+ `* @! j: S; R
/ u' x- G; V, M
作者:来自澳大利亚( f7 |" L: M$ }" m
来源:Haematologica. 2011.8.9." h- f' j5 g4 w: v: ?, c7 T5 h3 w6 j
Dear Group,& T4 {; d& l2 ~
# y* K7 E& T H7 Q6 u+ k( E- I
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
( s% P' Y ^; {therapies. Here is a report from Australia on 3 patients who went off Sprycel
, h u1 `' G. r2 J \after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients6 p- }. b" [2 v6 ?% |) \0 A
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel* ]6 k7 E! ?3 l
does spike up the immune system so I hope more reports come out on this issue.: t/ S! C+ u4 i0 o# w% `- R: d3 K
! p \/ _- H. C* S3 T b% {0 hThe remarkable news about Sprycel cessation is that all 3 patients had failed9 M8 ~7 J/ g6 ?3 P
Gleevec and Sprycel was their second TKI so they had resistant disease. This is( D6 _8 \% M& L) z
different from the stopping Gleevec trial in France which only targets patients
4 ~5 [$ \/ [. Q. L2 [ |who have done well on Gleevec.
( M/ ^! q$ Y' y4 Y8 X m6 `; I8 X5 u g {
Hopefully, the doctors will report on a larger study and long-term to see if the
; z( n$ w; I# M! bresponse off Sprycel is sustained.8 |1 |) E9 j* D' u
- V2 `* _( i% s" K
Best Wishes,
6 r0 d s: B) |9 |. s5 nAnjana5 O! ^0 `( Q8 i7 O' `% H
: R5 o; v) S7 I B
( r6 N3 K& I6 r( y& i* I7 L8 I/ T- V3 X
7 m# u# y, E J2 i- Q" o" \Haematologica. 2011 Aug 9. [Epub ahead of print]
) h; ~# H# [( e& ~$ DDurable complete molecular remission of chronic myeloid leukemia following6 s- ]; C) E/ h1 u: Q2 b. @; q
dasatinib cessation, despite adverse disease features.& O5 t' S! M. J" H2 t
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.: j6 ?; ^ c7 P& b
Source
8 `0 C, _8 m2 W v' yAdelaide, Australia;
1 l! A4 n( t& @9 n" X0 W7 ~; Q" M7 ~
Abstract: |; N3 R* X+ s: [: O5 ^8 A
Patients with chronic myeloid leukemia, treated with imatinib, who have a1 y8 `- F2 v q/ \% g9 ]. ]6 t
durable complete molecular response might remain in CMR after stopping
& D6 @6 u9 t; z `# D. g& ctreatment. Previous reports of patients stopping treatment in complete molecular8 k% H8 R$ v2 U1 B! a! n
response have included only patients with a good response to imatinib. We9 ] S: e$ Q: N9 I: g. {
describe three patients with stable complete molecular response on dasatinib _- t: p M% h( E4 e3 r
treatment following imatinib failure. Two of the three patients remain in
( O8 A6 g" R: r8 \1 f# C: {( ~complete molecular response more than 12 months after stopping dasatinib. In
+ g5 }6 x4 Z- u! H3 Hthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
/ c+ v/ f, ^) w r& lshow that the leukemic clone remains detectable, as we have previously shown in
/ q6 S3 j! }* Himatinib-treated patients. Dasatinib-associated immunological phenomena, such as
+ }$ I4 r& k# ?, Xthe emergence of clonal T cell populations, were observed both in one patient) q3 ?* h Z- e
who relapsed and in one patient in remission. Our results suggest that the, z6 v" k- _% z z/ X" E
characteristics of complete molecular response on dasatinib treatment may be
$ T% ?6 [; m. b5 D7 g4 \similar to that achieved with imatinib, at least in patients with adverse* w. ^& E; s" Y, ?9 p# P
disease features.
5 ` q0 c5 [6 a3 ^9 m |