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Poster Display session

318 - EMPOWER-lung 1: A randomized, open-label, multi-national, phase III trial of cemiplimab, a human PD-1 monoclonal antibody, versus chemotherapy in first-line treatment of advanced non-small cell lung cancer (NSCLC) with PD-L1 ≥50%

Date

14 Dec 2018

Session

Poster Display session

Presenters

Virote Sriuranpong

Citation

Annals of Oncology (2018) 29 (suppl_10): x24-x38. 10.1093/annonc/mdy487

Authors

V. Sriuranpong1, O. Altundag2, P. Clingan3, N.A. Rizvi4, O. Aren Frontera5, A. Sezer6, S. Paydas7, M. Shavdia8, I. Bondarenko9, O. Gladkov10, S. Lee11, S. Li12, P. Snodgrass11, P. Rietschel11

Author affiliations

  • 1 Division Of Medical Oncology, Department Of Medicine, Faculty Of Medicine, Chulalongkorn University and the King Chulalongkorn Memorial Hospital, 10330 - Bangkok/TH
  • 2 Department Of Medical Oncology, School Of Medicine, Başkent University, Ankara/TR
  • 3 Illawarra Health And Medical Research Institute, University of Wollongong/ Illawarra Cancer Centre, Wollongong Hospital, Wollongong/AU
  • 4 Division Of Hematology/oncology, Columbia University Medical Center, New York/US
  • 5 Centro Internacional, De Estudios Clinicos, Santiago/CL
  • 6 Department Of Medical Oncology, Baskent University, Adana/TR
  • 7 Department Of Medical Oncology, Faculty Of Medicine, Cukurova University, Adana/TR
  • 8 Palliative Care, Cancer Prevention Center, Tbilisi/GE
  • 9 Dnipropetrovsk State Medical Academy, City Clinical Hospital, Dnipropetrovsk/UA
  • 10 Department Of Clinical Oncology, Chelyabinsk Regional Clinical Oncology Dispensary, Chelyabinsk/RU
  • 11 Clinical Sciences, Regeneron Pharmaceuticals, Inc., Tarrytown/US
  • 12 Biostatistics & Data Management, Regeneron Pharmaceuticals, Inc.,, Basking Ridge/US
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Resources

Abstract 318

Background

Most patients (pts) with NSCLC present with advanced disease at diagnosis. Systemic therapy with platinum-based doublet chemotherapy regimens has been the standard first-line treatment for pts with advanced NSCLC whose tumours do not have EGFR, ALK, or ROS 1 mutations, but there is a need for effective treatments to improve long-term survival. With the recognition that NSCLC tumours express PD-L1, checkpoint inhibitors are being investigated in several clinical trials. There is currently only one PD-1 inhibitor approved as monotherapy in first-line treatment of NSCLC with PD-L1 expression ≥50%. In a phase 1 dose escalation and NSCLC expansion cohort, cemiplimab (REGN2810), a human monoclonal anti-PD-1, has demonstrated antitumour activity with an acceptable safety profile in anti-PD-1 naïve, pre-treated pts with NSCLC.

Trial design

This is a randomised (1:1), multicentre, open-label, phase 3 study of cemiplimab versus platinum-based doublet chemotherapy in systemic treatment-naïve pts (≥18 years) with stage IIIB, IIIC or IV squamous or non-squamous NSCLC whose tumours express PD-L1 in ≥ 50% of tumour cells (NCT03088540). Pts will be stratified by histology and geographic region. Pts will receive cemiplimab 350 mg every 3 weeks intravenously (for up to 108 weeks) or 4–6 cycles chemotherapy with (i) paclitaxel + cisplatin or carboplatin, (ii) pemetrexed + cisplatin or carboplatin with or without pemetrexed maintenance, (iii) or gemcitabine + cisplatin or carboplatin. The primary objective is to evaluate progression-free survival (PFS) as determined by blinded independent review committee. Key secondary objectives include assessment of overall survival and overall response rate. Assuming duration of study enrolment and follow-up of 28 months and 10 months, respectively, approximately 700 randomised pts are required to obtain 525 PFS events to yield approximately 90% power to detect a statistically significant change in median PFS between treatment arms, with the 2-sided type 1 error limited to 5%. An independent data monitoring committee will monitor safety data during study conduct.

Editorial acknowledgement

Medical writing support under the direction of the authors was provided by Emmanuel Ogunnowo, PhD, of Prime (Knutsford, UK) and funded by Regeneron Pharmaceuticals, Inc. and Sanofi according to Good Publication Practice guidelines.

Clinical trial identification

NCT03088540.

Legal entity responsible for the study

Regeneron Pharmaceutical Inc. and Sanofi.

Funding

Regeneron Pharmaceutical Inc. and Sanofi.

Disclosure

V. Sriuranpong: Honoraria for advisory board and institutional study support grants: Regeneron Pharmaceuticals, Inc. P. Clingan: Participation in clinical trial work: MSD, AbbVie and Checkpoint Therapeutics. N. Rizvi: Personal fees: Roche, AstraZeneca, BMS, Merck, Novartis, Merck KGaA, Pfizer, outside the submitted work. O. Aren Frontera: Personal fees (advisory board & lecturing): Bristol Myers Squibb, Roche; Personal fees (lecturing): Novartis, outside the submitted work. S. Lee, S. Li, P. Snodgrass: Employee and shareholder: Regeneron Pharmaceuticals, Inc. P. Rietschel: Employee and shareholder, honoraria: Regeneron Pharmaceuticals, Inc. All other authors have declared no conflicts of interest.

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