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。
: C" r7 c z/ z, u, s0 c t; x2 q: }) G 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。, ^/ c2 {: F% m# h4 |; v/ D# _+ ?
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作者:来自澳大利亚* t! V, f( g2 D: U/ ]5 Q
来源:Haematologica. 2011.8.9.3 Y4 l3 G. A6 h3 O6 y7 {
Dear Group,: P: x6 C. Q& ]0 r2 H8 d
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML! d: r' ^8 v6 S m" i5 P3 o& Q8 w
therapies. Here is a report from Australia on 3 patients who went off Sprycel. w2 v) B2 X4 S( z# l: V
after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
$ r5 S% W, }7 Q) W. V9 rremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel8 m& W* A( H% O8 @' x# R/ y
does spike up the immune system so I hope more reports come out on this issue.' j4 P# P Q$ {- D$ Y) B
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The remarkable news about Sprycel cessation is that all 3 patients had failed
# e/ W8 P7 @) F; w8 }0 aGleevec and Sprycel was their second TKI so they had resistant disease. This is1 A J4 U C, R9 E
different from the stopping Gleevec trial in France which only targets patients
, m M y1 |+ bwho have done well on Gleevec.5 K& r" ?- q# P
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Hopefully, the doctors will report on a larger study and long-term to see if the* t! m8 C( f8 R, b! C- n
response off Sprycel is sustained.3 N# ^9 E6 ^, l7 d* [4 [
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Best Wishes,4 g0 l5 u3 d1 z1 ^( h
Anjana M U$ j) s; P# f
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1 V2 V) ^- O# r3 g) F/ _# e' RHaematologica. 2011 Aug 9. [Epub ahead of print]; l. F5 B4 h6 I* `: c" K/ B5 h
Durable complete molecular remission of chronic myeloid leukemia following: e- b& o; X5 l5 j5 O) T0 \
dasatinib cessation, despite adverse disease features.
- W; i+ ~( i6 X' Z6 h# D( HRoss DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
4 u/ M- V3 Y$ z; S' { mSource
/ r" j/ v1 W' L# u) z2 |Adelaide, Australia;6 R+ e( E3 E W5 t* E
! f& |- c/ Z8 q5 R! ?& o! \5 [Abstract9 @' W9 E1 m- {5 O
Patients with chronic myeloid leukemia, treated with imatinib, who have a
9 z/ ?9 A5 f7 X3 s( B5 }durable complete molecular response might remain in CMR after stopping
: E% k, k a+ x$ O# Utreatment. Previous reports of patients stopping treatment in complete molecular
0 D1 d1 h2 } ~; w5 M+ Cresponse have included only patients with a good response to imatinib. We" s8 S/ p+ N8 h9 t
describe three patients with stable complete molecular response on dasatinib, h% e* C0 }6 j
treatment following imatinib failure. Two of the three patients remain in
# q! a I. G- ~7 J* |1 Z- @complete molecular response more than 12 months after stopping dasatinib. In
0 _' e4 p& t. L9 h& g! M9 M8 q# mthese two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to
& q1 q8 y6 y3 d8 d; d+ Tshow that the leukemic clone remains detectable, as we have previously shown in4 [7 b9 Y2 j# }, {. B
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as! D. X* F! X3 m: G, k
the emergence of clonal T cell populations, were observed both in one patient: B* C' a/ S; R5 K5 h
who relapsed and in one patient in remission. Our results suggest that the
/ q/ x6 Q+ U$ v2 J( h. Bcharacteristics of complete molecular response on dasatinib treatment may be
+ C$ \8 O! O$ b! p% usimilar to that achieved with imatinib, at least in patients with adverse
7 y$ b F# b0 I8 M$ qdisease features.
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