SPIRIT3 support includes Biobanking: broadly as for SPIRIT2, but plus genomic DNA (mouth wash via...
-
Upload
leo-copeland -
Category
Documents
-
view
212 -
download
0
Transcript of SPIRIT3 support includes Biobanking: broadly as for SPIRIT2, but plus genomic DNA (mouth wash via...
SPIRIT3 support includes
Biobanking: broadly as for SPIRIT2, but plus genomic DNA (mouth wash via kit)
Correlative Science: BiomarkersLSC biologyNGS: mutation analysis
: hypothesis generation
Example: Imatinib Metabolism
NQO1 &2TXN
CYP3A4/5
St John’s Wortcarbamazepine
phenytoin
ketoconazoleerythromycin
grapefruit juice
minormetabolites
CYPs:1A1, 1B1, 1A2,2D6, 2C9, 2C19
HN
N
N
N
HN
O
N
N
imatinib(t½ = 18hrs)
HN
N
N
N
HN
O
N
HN
CGP-74588(t½ = 40hrs)
EXCRETIONEXCRETIONROS
GSTsNATs, UGTs
DNAdamage
celldamage
T1 v M1 v T1+M1 v none
Time to CCR 0.255
Overall Survival 0.273
Treatment Failure 0.041
Treatment Failure and Intolerance < 0.000
Progression Free Survival (PFS) 0.029
Event Free Survival (EFS) 0.047
Mantel-Cox Log Rank Test (p values)
p < 0.000
n = 11
n = 17
n = 88
n = 77
GSTT1{del} and GSTM1{del} Results
Davies et al 2012, EHA Amsterdam (abstract)
Imatinib 400 mg QD (n = 283)
Nilotinib 300 mg BID (n = 282)RANDOMISED*
Nilotinib 400 mg BID (n = 281)
• N = 846• 217 centres• 35 countries
* Stratification by Sokal risk score.
10 years of follow-up are planned
Primary endpoint = MMR at 12 months. This is superior in nilotinib recipients (either dose) compared with imatinib (P < .0001; Saglio et al NEJM 2010).
ENESTnd: Study Design
Kantarjian HM, et al. Blood. 2012;120(21):[abstract 1676].
Arterial Events by 3 Years (All Grades)
Patients, n (%)
Nilotinib300 mg BID
n = 279
Nilotinib400 mg BID
n = 277
Imatinib400 mg QD
n = 280
IHD 9 (3.2) 11 (4.0) 3 (1.1)PAOD 4 (1.4) 3 (1.1) 0
• 11/23 IHD events occurred between years 2 and 3 (4 on nilotinib 300 mg BID, 5 on nilotinib 400 mg BID, 2 on imatinib)
• 3 patients on nilotinib 400 mg BID discontinued study drug due to IHD• 2/7 PAOD events occurred between years 2 and 3; both occurred on nilotinib
400 mg BID• 6/7 patients (85%) with PAOD had pre-existing risk factors at baseline• No patient discontinued because of PAOD
• No patient at any time on study in either nilotinib arm had a QTcF > 500 ms or LVEF < 45%
IHD, ischaemic heart disease; PAOD, peripheral arterial occlusive disease.
5LVEF, left ventricular ejection fraction. Data cutoff: 27Jul2011.
ENESTnd: arterial Events by 4 Years
Patients, n (%)
Nilotinib300 mg BID
n = 279
Nilotinib400 mg BID
n = 277
Imatinib400 mg QD
n = 280
IHD (3 yrs in brackets) 11 (9) 14 (11) 3 (3)PAOD (3 yrs in brackets) 4 (4) 5 (3) 0
Between years 3 and 4, five new patients had an IHD event (2 in the nilotinib 300 mg BID arm and 3 in the nilotinib 400 mg BID arm), and 2 new patients had a PAOD event (both in the nilotinib 400 mg BID arm)
1 patient in the nilotinib 400 mg BID arm with previously reported PAOD had a newly reported drug-related SAE (arterial stenosis limb) leading to treatment discontinuation
Including cerebrovascular events: 18 24 4
6 Data cutoff: 27Jul 2012.