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。
$ y# K2 l) _; y# C! m 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。
$ Y5 t; N$ Q8 H/ S" { $ N* B. T" P( D5 Q: o. O
作者:来自澳大利亚. m5 C3 {. z5 X8 r) c5 ^
来源:Haematologica. 2011.8.9.
/ E% l# z7 o8 O6 U0 H0 eDear Group,7 C) y, u: D8 @4 W+ X( L
?: e P5 O% F, sSome of you are on Dasatinib (Sprycel) and we wish to give news on all CML
" h0 j" T# I( L l( btherapies. Here is a report from Australia on 3 patients who went off Sprycel& y" ^' o% e1 K# b
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients8 I" w" {. x6 B) Q9 p+ b
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel u: {4 J; P5 m' m3 M& U
does spike up the immune system so I hope more reports come out on this issue./ m. g- I8 u, C4 j: l6 z' M( Y" g
0 r0 q& i* s" k) B
The remarkable news about Sprycel cessation is that all 3 patients had failed
* P, n0 A/ c+ l# [; R, O; KGleevec and Sprycel was their second TKI so they had resistant disease. This is. V" N# F8 t& X/ G8 z& G$ `3 m
different from the stopping Gleevec trial in France which only targets patients
/ T3 q. u- S* U8 L' G% wwho have done well on Gleevec.* h; E( ]* l4 y$ @. n/ t. d8 v4 r
0 A7 R. o3 P5 H
Hopefully, the doctors will report on a larger study and long-term to see if the/ k* K, y; k* r
response off Sprycel is sustained.+ p- S) F& c: Z) [
! t1 @+ k/ ` D( G% A, Q, YBest Wishes,; ^* w' E- L L$ i& w, J9 T" a
Anjana: N& _9 v% X' z; j6 c/ ~. ~9 N
; }7 r" L- O8 _0 Y
+ e9 J- Y) K. c! R# L1 ^+ A: q" l0 I
3 }6 Z/ w. \6 X# }" FHaematologica. 2011 Aug 9. [Epub ahead of print]2 b3 ?- g- Z! s9 a
Durable complete molecular remission of chronic myeloid leukemia following+ E7 \7 M G ]* g# G, j' S
dasatinib cessation, despite adverse disease features.
! }8 h2 ]1 @& |* PRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.' F& K; _/ i; d
Source9 u3 @: X* ^3 V* j
Adelaide, Australia;7 t: m8 ^5 x3 K M; K% {) C, ?6 `
+ q- g' y: l' n. m7 jAbstract
$ [3 N( v- n4 f3 F ZPatients with chronic myeloid leukemia, treated with imatinib, who have a& L" T5 b4 m% I! M; B x& t. ]& q
durable complete molecular response might remain in CMR after stopping
8 s3 L3 m7 x, Y' W" ?5 n2 `treatment. Previous reports of patients stopping treatment in complete molecular
- v5 @# j4 M+ _response have included only patients with a good response to imatinib. We+ m8 a# E2 l2 y4 y2 \/ L: O" _0 H( T
describe three patients with stable complete molecular response on dasatinib
* j0 d* Y4 X) Ttreatment following imatinib failure. Two of the three patients remain in+ j; u W5 p- E/ O
complete molecular response more than 12 months after stopping dasatinib. In
8 x2 s6 d- M- ^these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to0 J& a8 p8 S) r3 X) g: y# d' w' b
show that the leukemic clone remains detectable, as we have previously shown in3 k' }2 w9 b6 q9 ?* H3 n
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
+ ]' O1 g% a0 x2 r+ `the emergence of clonal T cell populations, were observed both in one patient+ ^4 {" {6 A$ ]3 b3 ^
who relapsed and in one patient in remission. Our results suggest that the
' w" b0 o) O$ F4 f- `# O+ `$ Ncharacteristics of complete molecular response on dasatinib treatment may be G0 x6 A7 o' [1 M2 _
similar to that achieved with imatinib, at least in patients with adverse
2 A T% i+ h3 D( _, hdisease features.
0 b1 x6 W" i y" q. q |