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。8 ]. a$ N4 c9 q- |) b1 F; Y
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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) c7 T$ W/ U) n5 B# A2 L8 L作者:来自澳大利亚6 [+ [4 a8 Z2 H4 [
来源:Haematologica. 2011.8.9.. Z6 b# {" J) B+ u5 ]6 l/ o2 t
Dear Group,
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% x9 w2 o- s2 y* m; C7 ySome of you are on Dasatinib (Sprycel) and we wish to give news on all CML' S* O9 T5 E0 C
therapies. Here is a report from Australia on 3 patients who went off Sprycel
# H7 ^. X/ q+ n; ^after stable molecular response (PCRU). 1 patient relapsed but 2/3 patients
; s0 s6 h: {3 a4 \* s% {7 M2 tremain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
. p9 J: a2 W; } Odoes spike up the immune system so I hope more reports come out on this issue.
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' z" |* F" o2 {$ f8 ^The remarkable news about Sprycel cessation is that all 3 patients had failed: L" f! S, V+ [. W% a
Gleevec and Sprycel was their second TKI so they had resistant disease. This is
5 v7 l4 D# s7 O7 F) K% [9 L$ K8 ^. ^different from the stopping Gleevec trial in France which only targets patients3 D) R/ [+ O" \* U, ^
who have done well on Gleevec.
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/ l9 q+ \) n. D8 ZHopefully, the doctors will report on a larger study and long-term to see if the. y0 e0 l, I! Q$ E- E) U8 [% [) D
response off Sprycel is sustained.
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Best Wishes,
# S8 X& c" G# j) b* D8 ]0 LAnjana2 p" K5 Q+ q5 f: _, }
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Haematologica. 2011 Aug 9. [Epub ahead of print]
2 z4 b& p1 f/ o6 ~0 J' iDurable complete molecular remission of chronic myeloid leukemia following- f3 ?" x- n+ B3 T9 o1 M
dasatinib cessation, despite adverse disease features.- g+ q4 i1 J5 k
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
# k3 O! P# Q3 N* B5 ~9 @Source' V1 t( P, s0 l7 `- B
Adelaide, Australia;1 [6 f8 j0 Y" d3 W; o: h7 z6 R
7 W0 R E5 K, D* V* @Abstract1 l+ S( \# y$ |$ |, E
Patients with chronic myeloid leukemia, treated with imatinib, who have a
; O1 R* N4 y( M; T1 M4 @4 a8 ]& M7 Fdurable complete molecular response might remain in CMR after stopping5 O* e: s/ [7 z% @
treatment. Previous reports of patients stopping treatment in complete molecular
/ `- c& a+ e5 S6 sresponse have included only patients with a good response to imatinib. We3 t3 q% h4 L! m* `' y, h0 j
describe three patients with stable complete molecular response on dasatinib
3 a0 t1 g% a; W- G+ @treatment following imatinib failure. Two of the three patients remain in
7 L1 d/ `, f8 m8 C/ }- J' Ccomplete molecular response more than 12 months after stopping dasatinib. In9 F( c, b! v+ I' @ {/ Q
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to, V7 P) O7 `# h% e/ \
show that the leukemic clone remains detectable, as we have previously shown in! \5 N4 \8 e5 y
imatinib-treated patients. Dasatinib-associated immunological phenomena, such as
9 @' w3 ? V* Y% u, ?5 `7 Lthe emergence of clonal T cell populations, were observed both in one patient
' e7 e8 v: g) \$ a" v6 fwho relapsed and in one patient in remission. Our results suggest that the6 u3 Q5 V" O3 i6 ^
characteristics of complete molecular response on dasatinib treatment may be* G; {, r9 o5 j0 D j
similar to that achieved with imatinib, at least in patients with adverse
6 x+ Y! h+ w& H2 @ x" V+ z* ~. f J0 S, zdisease features.) i- {( ~" b c2 ~
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