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。
9 A- k0 P- F# T' _ 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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& V" C f( O5 M0 d4 o5 ]作者:来自澳大利亚
) _; B8 p4 F/ O1 K' J# Q: F0 u7 n来源:Haematologica. 2011.8.9.% _7 D# L- ?1 K5 |5 e$ s
Dear Group,
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Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML4 X7 \1 [9 M: _5 |2 ~9 N
therapies. Here is a report from Australia on 3 patients who went off Sprycel
( |5 H2 a$ K1 P3 P. u nafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients; S/ W* v3 a4 T' T- R O# F
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel" ]( y; X3 G5 z1 r
does spike up the immune system so I hope more reports come out on this issue.
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The remarkable news about Sprycel cessation is that all 3 patients had failed
) r! s) `; ]. O4 K* ~2 e% U, oGleevec and Sprycel was their second TKI so they had resistant disease. This is7 w+ F. O7 g! ~- t
different from the stopping Gleevec trial in France which only targets patients
2 u9 |- U( e9 H$ c9 |5 L; pwho have done well on Gleevec.
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/ T4 e" A: T. k k( e; cHopefully, the doctors will report on a larger study and long-term to see if the
* z, {6 J+ L; R1 ~) `response off Sprycel is sustained.- r0 i! b# q6 _2 W- j% _
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Best Wishes,5 j' ]- J7 L- M( m5 ?3 J# v
Anjana
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2 Z2 I' u& A# h& H1 [: V% x7 b# D* z% D7 F" _7 {
Haematologica. 2011 Aug 9. [Epub ahead of print]
3 v' f; H2 _7 c% @- eDurable complete molecular remission of chronic myeloid leukemia following" ^2 L8 ?( r! Z9 t$ c; f" x
dasatinib cessation, despite adverse disease features.
' y( K7 u: w3 U! {# ?Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.
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Adelaide, Australia;
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. b; Y9 Y; t8 q, j6 A# I6 [* J& RAbstract
/ N7 q6 M- @$ X) QPatients with chronic myeloid leukemia, treated with imatinib, who have a9 C) }+ e+ f3 H$ W! \
durable complete molecular response might remain in CMR after stopping5 i* K3 a9 K4 S# f
treatment. Previous reports of patients stopping treatment in complete molecular
9 V& @+ ?5 X0 i" L* y: X* Gresponse have included only patients with a good response to imatinib. We
# \; L$ n2 z" ^1 z, }/ y0 {. i! s8 hdescribe three patients with stable complete molecular response on dasatinib
! S! @4 \ M9 X( Q3 ?0 N. Ytreatment following imatinib failure. Two of the three patients remain in
2 ~* o& J1 c3 P) N0 u9 Bcomplete molecular response more than 12 months after stopping dasatinib. In
2 H) |. T' D% ?these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to& {9 ?$ A% X6 z: ]8 m
show that the leukemic clone remains detectable, as we have previously shown in
- ~6 Y8 A# D: B; y6 ^6 ?4 o" Kimatinib-treated patients. Dasatinib-associated immunological phenomena, such as/ F) f! u* `$ y& ]
the emergence of clonal T cell populations, were observed both in one patient
' ]6 ?0 K3 p" o" ]" G2 dwho relapsed and in one patient in remission. Our results suggest that the
9 _6 _, r2 M6 ycharacteristics of complete molecular response on dasatinib treatment may be1 Y/ S- Y! S1 ^" |
similar to that achieved with imatinib, at least in patients with adverse
, Z- U; o$ E P5 x h1 ddisease features.1 T) w4 [* h3 J& y m' a. J$ S
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