Author of

• 11745

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  P2.11 - Poster Session 2 - NSCLC Novel Therapies (ID 209)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Medical Oncology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/29/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 11783

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    P2.11-038 - Efficacy of nivolumab (anti-PD-1; BMS-936558; ONO-4538) in patients with previously treated advanced non-small cell lung cancer (NSCLC): subpopulation response analysis in a phase 1 trial (ID 2751)

    09:30 - 09:30  |  Author(s): S. Gettinger
    • Abstract

    Background
    Lung cancer is the leading cause of cancer deaths globally, and NSCLC comprises 85% of lung cancers. Patients with advanced (stage IIIB or IV) NSCLC have a poor prognosis. Current second-line chemotherapeutics demonstrate a median overall survival (OS) of 8 months and 1-year survival of 30%. Factors that may influence clinical activity include age, ECOG performance status (PS), number of prior therapies, and EGFR- and KRAS-mutation status. The immune checkpoint receptor programmed death-1 (PD-1) negatively regulates T-cell activation upon interaction with its ligands PD-L1 and PD-L2. Nivolumab, a fully human IgG4, PD-1 receptor blocking monoclonal antibody, was evaluated in a phase 1 study (CA209-003; NCT00730639) in patients with various tumors, including previously treated advanced NSCLC. In this study, treatment with nivolumab demonstrated durable objective responses and prolonged stable disease in a portion of patients from this NSCLC cohort (Topalian S, et al. N Engl J Med. 2012;366:2443-54). We present the updated findings from assessment of clinical activity to nivolumab in subpopulations of the NSCLC cohort from this study.

    Methods
    Patients received nivolumab (1–10 mg/kg IV Q2W) for ≤12 cycles (4 doses/8W cycle) or until discontinuation criteria were met. An analysis of clinical activity by select patient characteristics was performed from the NSCLC cohort of this trial.

    Results
    129 patients with NSCLC (non-squamous [n=74], squamous [n=54], unknown histology [n=1]) received nivolumab at 1, 3, or 10 mg/kg as of March 2013 (Table). Association of clinical activity with baseline characteristics will be assessed for the following subgroups: age ≥70 and <70 years, gender, ECOG PS 0 and ≥1, number of prior therapies 1–2 and ≥3, prior tyrosine kinase inhibitor (TKI) therapy, EGFR-mutation status, and KRAS-mutation status.

    Table

    Baseline characteristic[a]		NSCLC patient population (n=129)
    Median age (range), y		65 (38–85)
    Gender, n (%)
    	Male	79 (61)
    	Female	50 (39)
    ECOG PS, n (%)
    	0	27 (21)
    	1	100 (78)
    	2	2 (2)
    Number of prior therapies, n (%)
    	1	25 (19)
    	2	34 (26)
    	3	27 (21)
    	≥4	43 (33)
    Prior therapy, n (%)
    	Platinum-based chemotherapy	128 (99)
    	TKI	36 (28)
    [a]Data on EGFR- and KRAS-mutation status are pending.

    Conclusion
    Nivolumab demonstrated encouraging clinical activity in patients with previously treated advanced NSCLC. Clinical activity by patient subgroups may provide insights into the influence of patient and tumor characteristics on response to nivolumab. An update of the data regarding clinical activity of nivolumab therapy in these subgroups of the NSCLC cohort will be presented.