In:
Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 31, No. 15_suppl ( 2013-05-20), p. TPS4144-TPS4144
Abstract:
TPS4144 Background: Germline mutations in BRCA1, 2 predispose to PC (Lal, G. Cancer Res, 2000). 5-8% PC have BRCA 1,2 mutations; higher in Ashkenazi Jewish (10-15%). Pre-clinical data demonstrates that platinums and poly-ADP ribose polymerase inhibitors (PARPi) have activity in BRCA-mutated PC models. Early clinical data supporting (Lowery, M. Oncol, 2011). We are evaluating the role of platinum agents and PARPi, veliparib (ABT-888), in BRCA or PALB2-mutated PC. Methods: Arm A, B: Includes non-randomized phase to optimize V dose combined with G, C (Arm A). Subsequently randomized phase II study will evaluate G, C +/- V. Primary endpoint: RECIST 1.1 response rate (RR) G, C, V (Arm A) and G, C (Arm B). Secondary endpoints: Progression-free survival, safety, disease-control rate, overall survival and correlatives involving pre, post biopsies to evaluate mechanisms of sensitivity, resistance to platinums, PARPi. Arm C: Evaluates single-agent V in previously-treated PC. Primary and secondary endpoints similar. Eligibility: BRCA, PALB2-mutated, measurable, stage III/IV PC; Untreated (Arm A, B), ≤ 2 lines therapy (Arm C); ECOG 0-1 (Arm A, B), ECOG 0-2 (Arm C). Treatment Plan: Arm A, B: V PO BID d1-12 (Arm A), q 3 weeks, G 600mg/m 2 IV, C 25mg/m 2 IV, both d3, 10, q 3 weeks (Arm A, B). Arm C: V 400mg PO BID d1-28 q 4 weeks. Biostatistics: Arms A, B: Simon’s 2-stage minimax design per arm. Unacceptable RR 10%, promising 30%, type I, II errors 10%. N= 16 stage I, +N= 9 (stage II). If ≥ 5/25, then promising. If both arms promising, option to add N= 10, allows distinction between RR 20% and 40%, 83% power. Arm C: Simon’s 2-stage, single-arm, uninteresting RR 10%, promising if ≥ 28%. N= 15 stage I, +N= 18 (stage II). Promising RR ≥ 6/33. Total N 47- 95. Contingency for slow accrual. Progress to Date: Accrual: Arm A (non-randomized): 13 screened, N= 5 enrolled. Arm C: 9 screened, N= 4 enrolled. Israeli, Canadian, other U.S. sites opening 2013. Funding and acknowledgements: National Cancer Institute, Lustgarten Foundation. NCT01585805. Clinical trial information: NCT01585805.
Type of Medium:
Online Resource
ISSN:
0732-183X
,
1527-7755
DOI:
10.1200/jco.2013.31.15_suppl.tps4144
Language:
English
Publisher:
American Society of Clinical Oncology (ASCO)
Publication Date:
2013
detail.hit.zdb_id:
2005181-5
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