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C. Dansky Ullmann



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    OA05 - Treatment Advances in SCLC (ID 373)

    • Event: WCLC 2016
    • Type: Oral Session
    • Track: SCLC/Neuroendocrine Tumors
    • Presentations: 1
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      OA05.05 - Randomized Phase 2 Study: Alisertib (MLN8237) or Placebo + Paclitaxel as Second-Line Therapy for Small-Cell Lung Cancer (SCLC) (ID 4855)

      15:05 - 15:15  |  Author(s): C. Dansky Ullmann

      • Abstract
      • Presentation
      • Slides

      Background:
      Alisertib, an investigational selective Aurora A kinase inhibitor, showed single-agent antitumor activity in preclinical in vivo SCLC models and was synergistic with paclitaxel in this setting. We report the efficacy, quality of life (QoL), and safety from this study.

      Methods:
      Patients ≥18 years with SCLC relapsed <180 days after standard first-line platinum-based chemotherapy were randomized 1:1 to alisertib 40 mg orally twice-daily on days 1–3, 8–10, 15–17 + paclitaxel 60 mg/m[2] IV on days 1, 8, 15 (Arm A) or matched placebo + paclitaxel 80 mg/m[2] (Arm B) in 28-day cycles. Patients were stratified using an interactive voice response system (IVRS) by type of relapse post-frontline platinum (sensitive vs resistant/refractory) and presence/absence of brain metastases at baseline. Protocol Amendment 2 corrected the definition for relapse per standard guidance; stratification factors were corrected accordingly. Primary endpoint was progression-free survival (PFS) per stratified log-rank test. QoL outcomes were assessed per EORTC QLQ-C30 and -LC13.

      Results:
      178 patients were randomized, 89/89 to Arm A/B (median age 62/62 years). Survival, response, QoL, and safety results are presented in the Table. The analysis of PFS using IVRS stratification favored Arm A, as did the analysis per corrected stratification factors. Mean EORTC QLQ-C30 QoL scores were similar between arms, as were mean change-from-baseline values at end of treatment (-5.7 in Arm A vs -4 in Arm B). Figure 1



      Conclusion:
      Alisertib + paclitaxel shows favorable PFS over placebo + paclitaxel with both initial and updated IVRS stratification. A similar favorable trend was also observed for OS and ORR although not statistically significant. Comparable changes in QoL scores were observed from baseline in both arms. The alisertib + paclitaxel arm showed higher rates of AEs and discontinuation due to AEs. Updated survival analyses are pending.

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