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。4 h+ p! b% M) y7 |8 f% q8 C }
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。0 r" T& H9 Q2 R6 w2 D4 \( Z* O
; t$ y; B, o2 a" i作者:来自澳大利亚* B5 ^$ Y' Z& ]0 Y
来源:Haematologica. 2011.8.9.
, @4 G$ @. _% A! w4 fDear Group,$ p. L) }2 ^. d* y& h
3 R, F2 ~- d7 B$ V0 B% O( U9 N
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
* l) {* L. f# f5 Gtherapies. Here is a report from Australia on 3 patients who went off Sprycel2 N% J$ z5 Y# w* E+ j
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients1 I: S. q- P( E: v
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
: J2 k4 K. a- ^; A) d/ t3 x( ldoes spike up the immune system so I hope more reports come out on this issue.7 `! ?- n+ q# H8 p
! C1 F3 f+ U* V. L& cThe remarkable news about Sprycel cessation is that all 3 patients had failed/ M: `9 b5 D8 q! t
Gleevec and Sprycel was their second TKI so they had resistant disease. This is4 k' Y, t' q7 g8 W) D
different from the stopping Gleevec trial in France which only targets patients
' t5 r6 R' x# q/ Rwho have done well on Gleevec.
4 {/ ]0 i3 G& |6 }. Q$ b( x9 V3 [* V3 J# _. ^# j: G/ Z3 f, f
Hopefully, the doctors will report on a larger study and long-term to see if the
/ r( [" M( h5 {6 u4 ?& Bresponse off Sprycel is sustained.1 G" B) h% {7 z3 j3 v C# J4 a2 q
" Z* P1 f; m j/ Y8 e& V; PBest Wishes,) J6 T! ?) E% M4 U
Anjana
0 [2 e: d. M( }3 J
- ^0 G# p' o$ o3 p+ y3 H0 ]& V4 Y4 g- x* B+ ?: Q* B( w
! T# }% l6 ~8 t& a( T; {- w) W) }
Haematologica. 2011 Aug 9. [Epub ahead of print]
) d/ e9 l! L; l6 F9 n6 mDurable complete molecular remission of chronic myeloid leukemia following
9 O. B7 z0 b4 f/ Q" zdasatinib cessation, despite adverse disease features.! Q; i' R8 r7 r. x3 \0 \1 A
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
! W$ b8 I/ z# _6 ^" r$ u! FSource
: w/ ~% a | f6 A. X( }Adelaide, Australia;
) G) a1 f. O" M7 y$ R5 N4 v* W; R, V& K/ f4 U" ]' {
Abstract
+ F; m, p; i% I/ D# G1 GPatients with chronic myeloid leukemia, treated with imatinib, who have a6 s5 f1 ]- z X. b
durable complete molecular response might remain in CMR after stopping" j! Q# n, B" o
treatment. Previous reports of patients stopping treatment in complete molecular9 Z1 N0 _: y& ?0 E4 {
response have included only patients with a good response to imatinib. We
: G: @) W7 b. w R: X, cdescribe three patients with stable complete molecular response on dasatinib
6 y4 x1 o, u' ^) a- atreatment following imatinib failure. Two of the three patients remain in
. T7 C2 i; y) W; U5 fcomplete molecular response more than 12 months after stopping dasatinib. In0 |# O* ?7 r: g% X. U u
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
! S+ v. y/ d$ T- Q( u" kshow that the leukemic clone remains detectable, as we have previously shown in
: o' e9 \# _9 R; d7 e% eimatinib-treated patients. Dasatinib-associated immunological phenomena, such as( ~: m) w8 z6 s1 I
the emergence of clonal T cell populations, were observed both in one patient. l& G6 x7 v; Y
who relapsed and in one patient in remission. Our results suggest that the
5 b: _+ L% M: d2 Scharacteristics of complete molecular response on dasatinib treatment may be
n, q5 b1 Q6 M2 M+ ~$ S% esimilar to that achieved with imatinib, at least in patients with adverse
% D8 _: b! Z1 b3 ] tdisease features.
8 K- w- I1 [% r! Y! Z+ K |