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J. Puente



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    MA09 - Immunotherapy Combinations (ID 390)

    • Event: WCLC 2016
    • Type: Mini Oral Session
    • Track: Chemotherapy/Targeted Therapy/Immunotherapy
    • Presentations: 1
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      MA09.11 - Efficacy and Safety of Necitumumab and Pembrolizumab Combination Therapy in Stage IV Nonsquamous Non-Small Cell Lung Cancer (NSCLC) (ID 4712)

      15:32 - 15:38  |  Author(s): J. Puente

      • Abstract
      • Presentation
      • Slides

      Background:
      Trials of anti-EGFR necitumumab and anti-PD1 pembrolizumab demonstrate the anti-tumor activity of each agent in NSCLC.

      Methods:
      Single-arm, multicenter Phase 1b study to investigate effectiveness and safety of necitumumab combined with pembrolizumab in patients with Stage IV NSCLC (NCT02451930). In Part A, escalating doses of necitumumab (600 mg and 800 mg IV) were administered on Day 1 and 8 every 3 weeks (Q3W) in combination with pembrolizumab (200 mg IV) on Day 1 Q3W. In the absence of dose limiting toxicity, Part B (expansion cohort) was planned with necitumumab 800 mg in 27 squamous and 27 nonsquamous NSCLC patients. Major eligibility criteria included: progression after ≥1 platinum-based chemotherapy, and ECOG PS 0-1. Study objectives were to evaluate tolerability and ORR by RECIST 1.1. PD-L1 status was centrally assessed using PD-L1 IHC 22C3 pharmDx assay (considered negative, weak positive, strong positive if <1%, 1-49%, ≥50% of tumor cells were stained, respectively).

      Results:
      The interim analysis population includes 34 nonsquamous patients (median age 61 years, 68% men, 21% never smokers, PD-L1 status: negative, 50% [17/34]; positive weak/strong, 15% [5/34]/15% [5/34]; unknown 21% [7/34[BJ1] ]). Median follow-up was 6.0 months. Ten patients (29.4%) had PR (confirmed and unconfirmed) (PRs by PD-L1 status: negative, 18% [3/17]; positive weak/strong, 60% [3/5]/40% [2/5]; unknown status, 2 patients). DCR was 67.6%. PFS rate at 6 months was 55.1% (95% CI, 36.2-70.6); median PFS was 6.9 months (95% CI, 2.7-NR). Most common Grade ≥3 AEs were skin rash (9%), hypomagnesemia (9%), VTE (9%) and increased lipase (9%); 1 patient died due to an AE (respiratory tract infection). Five patients (14.7%) discontinued therapy because of an AE. Figure 1



      Conclusion:
      Safety profile corresponds to individual profiles for both drugs, with no additive toxicities. These preliminary data suggest activity of this combination in a pretreated nonsquamous NSCLC population, irrespective of PD-L1 status.

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