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Journal Thoracic Oncology

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Abstracts <strong>Journal</strong> of <strong>Thoracic</strong> <strong>Oncology</strong> • Volume 12 Issue S1 January 2017<br />

EGFR+ NSCLC and by central testing documented presence of pretreatment<br />

T790M mutation. Seventy-three patients will receive continuous treatment<br />

with osimertinib 80 mg daily until disease progression, intolerable adverse<br />

events, consent withdrawal or noncompliance with the study protocol.<br />

The primary endpoint is the objective response rate (ORR) assessed using<br />

Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. The trial is<br />

designed to detect a ≥70% ORR in this patient population. Secondary<br />

objectives include PFS, overall survival, time to treatment failure, duration<br />

of response and disease control rate. Additional pre-specified secondary<br />

objectives of the study are the longitudinal analysis of EGFR mutations<br />

(including the T790M and the C797S mutations) in plasma and serum and the<br />

expression analysis of a panel of biomarkers with possible predictive value for<br />

osimertinib treatment. Results: Not applicable Conclusion: Not applicable<br />

Keywords: EGFR T790M mutation, AZENT study, AZD9291, EGFR mutant<br />

NSCLC<br />

POSTER SESSION 2 – P2.06: SCIENTIFIC CO-OPERATION/RESEARCH GROUPS<br />

PHASE II + NK –<br />

TUESDAY, DECEMBER 6, 2016<br />

P2.06-011 PHASE 2 STUDY OF MM-121 PLUS CHEMOTHERAPY<br />

VS. CHEMOTHERAPY ALONE IN HEREGULIN-POSITIVE, LOCALLY<br />

ADVANCED OR METASTATIC NSCLC<br />

Lecia Sequist 1 , Ian Anderson 2 , Akin Atmaca 3 , Todd Bauer 4 , Young Chae 5 ,<br />

Haiying Cheng 6 , Manuel Cobo 7 , Nate Demars 8 , Enriqueta Felip 9 , Nikolaj<br />

Frost 10 , Ramón García Gómez 11 , Jhanelle Gray 12 , Wael Harb 13 , Leora Horn 14 ,<br />

Rudolf Huber 15 , Dolores Isla 16 , Arthur Kudla 8 , Jean Lee 17 , Sara Mathews 8 ,<br />

Ranee Mehra 18 , Manuel Modiano 19 , Jorge Nieva 20 , Joseph Rosales 21 , Frances<br />

Shepherd 22 , Alexander Spira 23 , Akos Czibere 8<br />

1 Massachusetts General Hospital, Boston/MA/United States of America, 2 St. Joseph<br />

Heritage Medical Group, Santa Rosa/CA/United States of America, 3 Krankenhaus<br />

Nordwest GmbH Institut Für Klinisch-Onkologische Forschung, Frankfurt Am Main/<br />

Germany, 4 Sarah Cannon Research Institute, Tennessee <strong>Oncology</strong>, PLCC, Nashville/<br />

TN/United States of America, 5 Northwestern University, Chicago/IL/United States<br />

of America, 6 Montefiore Medical Center, Bronx/NY/United States of America,<br />

7 H.R.U. de Málaga, Malaga/Spain, 8 Merrimack Pharmaceuticals, Cambridge/MA/<br />

United States of America, 9 Hospital Universitario Vall D’Hebron, Barcelona/Spain,<br />

10 Charité - Universitätsmedizin Berlin, Berline/Germany, 11 H.G.U. G. Marañón,<br />

Madrid/Spain, 12 <strong>Thoracic</strong> <strong>Oncology</strong>, Moffitt Cancer Center, Tampa/FL/United States<br />

of America, 13 Horizon <strong>Oncology</strong>center, Lafayette in/IN/United States of America,<br />

14 Vanderbilt–Ingram Comprehensive Cancer Center, Nashvillle/TN/United States<br />

of America, 15 Klinikum Der Universitaet Muenchen, Lmu, München/Germany,<br />

16 Medical <strong>Oncology</strong>, H.C.U.Lozano Blesa, Zaragoza/Spain, 17 NYU Medical Center,<br />

New York/NY/United States of America, 18 Fox Chase Cancer Center, Philadelphia/<br />

PA/United States of America, 19 Arizona Clinical Research Center, Tucson/AZ/<br />

United States of America, 20 University of Southern California, Los Angeles/CA/<br />

United States of America, 21 Virginia Mason, Seattle/WA/United States of America,<br />

22 Princess Margaret Cancer Centre, Toronto/ON/Canada, 23 Virginia Cancer<br />

Specialists, Arlington/VA/United States of America<br />

Background: The role of the HER3 receptor and its ligand heregulin (HRG) in<br />

the progression of multiple cancers has been well established. Seribantumab<br />

(MM-121) is a fully human, monoclonal IgG2 antibody that binds to the HRG<br />

domain of HER3, blocking HER3 activity. The correlation between the level<br />

of HRG mRNA in tumor tissue and progression free survival (PFS) were<br />

retrospectively analyzed in three completed randomized Phase 2 studies of<br />

seribantumab plus standard of care (SOC) versus SOC alone (NSCLC, breast<br />

cancer and ovarian cancer). In each of these studies, high levels of HRG<br />

mRNA predicted shortened PFS for patients who received SOC treatment,<br />

while the addition of seribantumab to SOC improved PFS for patients with<br />

HRG-positive (HRG+) tumors. This is consistent with the hypothesis that HRG<br />

expression defines a drug tolerant cancer cell phenotype shielded from the<br />

effects of cytotoxic or targeted therapies and that blockade of HRG-induced<br />

HER3 signaling by seribantumab counters the effects of HRG on cancer cells,<br />

with the potential to improve outcomes for HRG+ patients. It is estimated<br />

that up to approximately 50% of cases of all solid tumor indications are<br />

HRG+. This HRG expression may contribute to rapid clinical progression in a<br />

subset of patients with poor prognosis. Methods: In the ongoing randomized,<br />

open-label, international, Phase 2 study, NSCLC patients with HRG+ tumors<br />

are being prospectively selected using a HRG RNA in situ hybridization<br />

assay performed on a recent tumor tissue sample collected via fine needle<br />

aspiration, core needle biopsy or excision. Approximately 560 patients<br />

will be screened to support enrollment of 280 HRG+ patients, who will be<br />

randomized in a 2:1 ratio to receive seribantumab plus investigator’s choice<br />

of docetaxel or pemetrexed, or docetaxel or pemetrexed alone. Patients<br />

will be wild-type for EGFR and ALK and will have progressed following one<br />

to three systemic therapies, one of which must be an anti-PD-1 or anti-PD-L1<br />

therapy, for locally advanced and/or metastatic disease. Overall survival (OS)<br />

is the primary endpoint of the study and secondary endpoints include PFS,<br />

objective response rate and time to progression. Safety and health-related<br />

quality of life will also be assessed. An interim analysis is planned when 50%<br />

of final OS events have been reported. Enrollment has been initiated with<br />

approximately 80 sites expected to participate worldwide. Clinical Trials<br />

Registry number: NCT02387216 Results: Section not applicable Conclusion:<br />

Section not applicable<br />

Keywords: Heregulin, HER3, Seribantumab, MM-121<br />

POSTER SESSION 2 – P2.06: SCIENTIFIC CO-OPERATION/RESEARCH GROUPS<br />

PHASE II + NK –<br />

TUESDAY, DECEMBER 6, 2016<br />

P2.06-012 PHASE 2 STUDY OF ABEMACICLIB + PEMBROLIZUMAB<br />

IN KRAS MUTATION, PD-L1+, STAGE IV NON-SMALL CELL OR<br />

SQUAMOUS CELL LUNG CANCER<br />

Julien Mazieres 1 , Sara Tolaney 2 , Luis Paz-Ares 3 , Jean-Louis Pujol 4 , Tuncay<br />

Goksel 5 , Chia-Chi Lin 6 , Anwar Hossain 7 , William John 7 , Peter Kabos 8<br />

1 Hôpital Rangueil, Toulouse/France, 2 Dana-Farber Cancer Institute, Boston/MA/<br />

United States of America, 3 Doce de Octubre University Hospital, Madrid/Spain,<br />

4 Hôpital Arnaud de Villeneuve Service de, Montpellier/France, 5 Ege University<br />

Medical School, Izmir/Turkey, 6 National Taiwan University Hospital, Taipei/Taiwan,<br />

7 Eli Lilly and Company, Indianapolis/IN/United States of America, 8 University of<br />

Colorado Anschutz Medical Campus, Aurora/CO/United States of America<br />

Background: Stage IV non-small cell lung cancer (NSCLC) harboring KRAS<br />

mutations remains a treatment challenge. Abemaciclib, a small molecular<br />

inhibitor of both cyclin-dependent kinase (CDK) 4 and CDK6, demonstrated<br />

acceptable safety, tolerability, and single-agent activity for patients with<br />

different tumors, including NSCLC. Preclinical evidence suggests a lethal<br />

interaction between CDK4 inhibition in lung cells and KRAS oncogenes.<br />

Pembrolizumab, a humanized monoclonal antibody against PD-1 protein,<br />

is approved in the US for patients with metastatic PD-L1+ NSCLC. Both<br />

compounds demonstrated manageable toxicities. We thus aim to study<br />

the combination of abemaciclib and pembrolizumab in pretreated patients<br />

with NSCLC. Methods: This open-label phase 2 study will evaluate safety<br />

and preliminary efficacy of abemaciclib 150 mg given orally every 12 hours<br />

on a continuous schedule on days 1-21 in combination with intravenous<br />

pembrolizumab 200 mg on day 1 of a 21-day cycle to patients in 1 of 3 disease<br />

cohorts: KRAS mutation, PD-L1+, stage IV NSCLC (Part A); stage IV NSCLC with<br />

squamous histology (Part B); or hormone receptor+, HER2- metastatic breast<br />

cancer (Part C). Total target accrual is approximately 75 patients (25 per<br />

cohort). Only the 2 NSCLC cohorts will be presented here. Patients eligible for<br />

Part A have a confirmed KRAS mutation, PD-L1+ expression score of ≥1%, and<br />

are chemotherapy-naïve for metastatic NSCLC. Part B includes patients with<br />

predominately squamous NSCLC who have received 1 prior platinum-based<br />

chemotherapy for advanced NSCLC. Patients must provide tumor tissue<br />

before and after treatment (cycle 3, day 1); have measurable disease, adequate<br />

organ function, an ECOG PS ≤1, and a life expectancy ≥12 weeks; and be ≥18<br />

years of age and able to swallow oral medications. The primary objective is to<br />

characterize the safety profile of abemaciclib plus pembrolizumab. Secondary<br />

objectives include objective response rate (ORR), disease control rate (DCR),<br />

duration of response (DoR), progression-free survival (PFS), characterization<br />

of pharmacokinetics, and health outcomes. Patients who receive any study<br />

drug will be included in the analyses. Analyses of ORR, DCR, DoR, and PFS will<br />

be evaluated according to RECIST v.1.1 and irRECIST. Time-to-event variables<br />

will be estimated by Kaplan-Meier methodology. An interim analysis of<br />

safety and preliminary efficacy may occur after all patients have completed<br />

(or discontinued from) approximately 24 weeks of treatment. The final OS<br />

analysis will occur based on data collected for approximately 12 months<br />

after the last patient receives treatment. Results: Section not applicable<br />

Conclusion: Section not applicable<br />

Keywords: abemaciclib, pembrolizumab, non-small cell lung cancer, Squamous<br />

cell lung cancer<br />

POSTER SESSION 2 – P2.06: SCIENTIFIC CO-OPERATION/RESEARCH GROUPS<br />

PHASE II + NK –<br />

TUESDAY, DECEMBER 6, 2016<br />

P2.06-013 AFATINIB IN PATIENTS WITH ADVANCED HER2<br />

MUTATION-POSITIVE (M+) NSCLC PREVIOUSLY TREATED WITH<br />

CHEMOTHERAPY<br />

Caicun Zhou 1 , Yun Fan 2 , Huijuan Wang 3 , Chong Kin Liam 4 , Chengjie Hu 5 ,<br />

Agnieszka Cseh 6<br />

1 Medical <strong>Oncology</strong>, Shanghai Pulmonary Hospital, Shanghai/China, 2 Department<br />

of Chemotherapy, Zhejiang Cancer Hospital, Hangzhou/China, 3 Department<br />

of Internal Medicine, Henan Cancer Hospital/the Affiliated Cancer Hospital of<br />

Zhengzhou University, Zhengzhou/China, 4 Department of Medicine, University<br />

of Malaya Medical Centre, Kuala Lumpur/Malaysia, 5 Boehringer Ingelheim (China)<br />

Investment Co. Ltd, Beijing/China, 6 Department of Medical Affairs, Boehringer<br />

Ingelheim Rcv GmbH & Co. KG, Vienna/Austria<br />

S564 <strong>Journal</strong> of <strong>Thoracic</strong> <strong>Oncology</strong> • Volume 12 Issue S1 January 2017

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