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K. Takeuchi



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    OA 05 - Next Generation TKI (ID 657)

    • Event: WCLC 2017
    • Type: Oral
    • Track: Advanced NSCLC
    • Presentations: 1
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      OA 05.08 - Final Result of Phase I/II Study (AF-001JP) of Alectinib, a Selective CNS-Active ALK Inhibitor, in ALK+ NSCLC Patients (Pts) (ID 9732)

      17:00 - 17:10  |  Author(s): K. Takeuchi

      • Abstract
      • Presentation
      • Slides

      Background:
      Alectinib (ALC) is a selective, CNS-active ALK tyrosine kinase inhibitor. In two Phase 3 studies (J-ALEX and ALEX), ALC proved superior efficacy and tolerability compared to crizotinib (CRZ). Here we report the final efficacy and safety results of the 46 pts enrolled in the phase II part of study AF-001JP with a longer follow-up period than that observed in J-ALEX and ALEX studies.

      Method:
      ALC 300 mg b.i.d was given to ALK+ NSCLC pts who were ALK inhibitor-naive and had disease progression after at least one line of chemotherapy to investigate the efficacy and safety until the investigator confirmed no further clinical benefits.

      Result:
      This study was completed in December 2016. The median treatment duration was 46.1 months (range: 1-62). 20 of 46 pts were on treatment with alectinib at the study termination. Progressive disease (PD) was confirmed in 20 pts (43%). Median PFS was not reached and 4-year PFS rate was 52% (95% CI: 36-66). 14 of 46 pts had CNS metastasis at baseline. Median PFS was 38 months (95% CI: 9-NE) in pts with CNS metastases and was not reached in pts without CNS metastases. Four pts had CNS progression and the 4-year cumulative incidence rate of CNS progression was 9.5%. Median OS was not reached and the 4-year OS rate was 70% (95% CI: 54-81). Safety profile was similar to that reported previously and there were no treatment-related Grade 4 or 5 adverse events for this long administration period.

      Conclusion:
      Regardless of CNS metastases at baseline, ALC have demonstrated excellent efficacy in ALK+ NSCLC pts without prior ALK inhibitor treatment. ALC was well tolerated over a prolonged administration period.

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