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。2 r! g4 U& X: c1 u
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。
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7 t% K* s5 }7 Z+ h作者:来自澳大利亚( m0 c0 n# i' M
来源:Haematologica. 2011.8.9.
% I% v- @9 v/ s2 P" {! ?Dear Group, V. L' X& ~8 a) R
& ~) l, @% ^* p2 I G- X
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
8 Z( |7 D' @6 s' Z9 I6 xtherapies. Here is a report from Australia on 3 patients who went off Sprycel
" G# M3 b" l& P- r p. _* M% safter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
' b7 X! p) s9 v1 y* c+ zremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel) _1 C1 o% c! X7 E& l. u3 N
does spike up the immune system so I hope more reports come out on this issue.( m4 U8 `% q. h2 C; w: ? n
- X3 G( R" z8 C$ M( q& sThe remarkable news about Sprycel cessation is that all 3 patients had failed
8 I n( j: l" O4 N( ]Gleevec and Sprycel was their second TKI so they had resistant disease. This is" Y5 t+ @+ Y* z$ ]
different from the stopping Gleevec trial in France which only targets patients
; [( M! u) Y" Y3 b' R( ?' A8 nwho have done well on Gleevec.
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$ H0 ^' | {0 P- J! m. G0 h% JHopefully, the doctors will report on a larger study and long-term to see if the' V) P& R2 P4 R2 Z0 X+ T
response off Sprycel is sustained.& O, j% x: y: p/ C+ e- x
( O6 P4 O5 a+ d* i( n. ^6 U" NBest Wishes,
& R! M* P: Y5 Y9 |6 AAnjana, o3 t5 F9 y/ g" z# ^
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+ k' D1 X& Q$ i( O
# _5 j5 D7 D0 E1 tHaematologica. 2011 Aug 9. [Epub ahead of print]
# _# C; z5 T* V+ XDurable complete molecular remission of chronic myeloid leukemia following
+ d, V& O/ @2 N2 Z* S9 cdasatinib cessation, despite adverse disease features.
0 z7 t9 z$ f( d4 L7 p' ZRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.9 k) e- H6 Y7 Y' U* X; _+ j% B9 U& e
Source3 r. c; v$ @5 O4 w" D
Adelaide, Australia;8 O E/ m# ]8 T( |8 R* M
6 e2 G2 F9 C# X; m- {Abstract
) G) Q4 `+ h' L7 }Patients with chronic myeloid leukemia, treated with imatinib, who have a( K; w1 u) a5 \9 b# o* ]
durable complete molecular response might remain in CMR after stopping7 f) d* k) j! W' D( a
treatment. Previous reports of patients stopping treatment in complete molecular$ A c- |8 _3 E7 H7 y: \# q
response have included only patients with a good response to imatinib. We
f% p4 e3 o6 I9 G8 s/ W m8 qdescribe three patients with stable complete molecular response on dasatinib
0 F0 k1 [/ d3 V* ztreatment following imatinib failure. Two of the three patients remain in
7 o: A' w* K" Z6 C2 @complete molecular response more than 12 months after stopping dasatinib. In; Y) y7 L4 p% Q
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
+ A1 r' A; _% D$ M5 k0 jshow that the leukemic clone remains detectable, as we have previously shown in
, k5 R v# A7 u# simatinib-treated patients. Dasatinib-associated immunological phenomena, such as) R$ y4 C5 m" E5 a
the emergence of clonal T cell populations, were observed both in one patient5 l6 N; T! r# _5 B Y- B
who relapsed and in one patient in remission. Our results suggest that the
% d& i3 ?7 C$ Qcharacteristics of complete molecular response on dasatinib treatment may be; f+ }& `: g, {- }5 ]
similar to that achieved with imatinib, at least in patients with adverse
! ^9 \7 f& W$ J4 `) _disease features.
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