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A. Renault

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    New approaches in rare thoracic tumors (ID 60)

    • Event: ELCC 2018
    • Type: Proffered Paper session
    • Track:
    • Presentations: 1
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      135O - A phase 1b study of necitumumab in combination with abemaciclib in patients with stage IV non-small cell lung cancer (ID 592)

      11:00 - 12:30  |  Author(s): A. Renault

      • Abstract
      • Presentation
      • Slides

      Necitumumab and abemaciclib inhibit tumor progression by different, independent mechanisms, and both have shown activity in patients with non-small cell lung cancer (NSCLC).

      This Phase 1b study was a single arm, multicenter trial to explore the safety and efficacy of necitumumab plus abemaciclib in adults with confirmed Stage IV NSCLC, who had received a maximum of 1 other prior chemotherapy for advanced and/or metastatic disease. Part A was a dose escalation study for abemaciclib in combination with necitumumab 800 mg D1D8 Q3W in up to 18 patients to determine the recommended dose for the expansion cohort (Part B, planned for 50 patients). The primary endpoint was progression-free survival (PFS) rate at 3 months compared to the historical PFS rate with single agent epidermal growth factor receptor inhibitors (50%). Secondary efficacy endpoints included PFS, overall response rate (ORR), disease control rate (DCR), and overall survival (OS).

      Sixty-six patients entered the study: 71% male, 61% <65 years of age, 77% ECOG performance status 1, 41% squamous histology, and 15% never smokers. In Part A (n = 15), the maximum tolerated abemaciclib dose was determined to be 150 mg every 12 hours; overall 57 patients received this treatment. The 3-month PFS rate was 32.3% (95% CI: 20.4, 44.8); median PFS was 2.14 months (1.41, 2.76). ORR was 5.3% (1.1, 14.6), and DCR was 47.4% (34.0, 61.0). The median OS was 6.93 months (4.96, 12.85). Treatment-emergent adverse events occurring in ≥30% of all patients (n [%]) included fatigue (34 [51.5]), diarrhea (33 [50.0]), dermatitis acneiform (31 [47.0]), decreased appetite (26 [39.4]), nausea (26 [39.4]), anemia (24 [36.4]), dyspnea (22 [33.3]), hypomagnesemia (21 [31.8]), vomiting (21 [31.8]), and dry skin (20 [30.3]).

      In patients with Stage IV NSCLC, the combination of abemaciclib with necitumumab did not meaningfully impact the PFS rate at 3 months. The safety profile was consistent with the individual study drugs, and no new significant safety concerns emerged.

      Clinical trial identification: NCT02411591

      Legal entity responsible for the study:
      Eli Lilly and Company

      Eli Lilly and Company

      B. Besse: Research support from Eli Lilly and Company. B. Frimodt-Moller, M. Gil: Employee and stockholder of Eli Lilly and Company. All other authors have declared no conflicts of interest.

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