Author of

• 16751

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  P1.05 - Poster Session with Presenters Present (ID 457)

  • Event: WCLC 2016
  • Type: Poster Presenters Present
  • Track: Early Stage NSCLC
  • Presentations: 1
  • Moderators:
  • Coordinates: 12/05/2016, 14:30 - 15:45, Hall B (Poster Area)

  • 16802

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    P1.05-051 - Safety and Compliance Data of the Phase III Study of Adjuvant Chemotherapy in Completely Resected P-Stage I Non Small Cell Lung Cancer: JCOG0707 (ID 3877)

    14:30 - 14:30  |  Author(s): M. Takahama
    • Abstract
    • Slides

    Background:
    Post-operative UFT (tegafur/uracil) has been shown to prolong survival of Japanese patients (pts) with completely resected, pathological (p-) stage I (T1> 2 cm) non small cell lung cancer (NSCLC). This trial aimed at estimating the efficacy of S-1 (tegafur/gimeracil/oteracil) compared to UFT as adjuvant therapy in this population.
    
    Methods:
    Eligible pts had undergone complete resection with lymph node dissection for p-stage I (T1-2N0M0, T1> 2 cm, by 5[th] Edition UICC TNM) NSCLC, within 56 days of enrollment. Pts were randomized to receive either oral UFT 250mg/M2/d for 2 years (Arm A), or oral S-1 80mg/M2/d for 2 weeks followed by 1 week of rest, for 1 year (Arm B). The initial primary endpoint was overall survival (OS). Based upon the results of monitoring in Jun. 2013, which showed the combined OS of the 2 arms better than expected (4-year OS of 91.6% vs. presumed 5-year OS of 70-76.5%), the study was judged to be underpowered. The study protocol was amended so that the primary endpoint was relapse-free survival (RFS). With a calculated sample size of 960, this study would detect the superiority of Arm B over Arm A with power 79% and a one-sided type I error of 0.05, assuming the 5-year RFS of 75% in Arm A and the hazard ratio of 0.75.
    
    Results:
    From Nov. 2008 to Dec. 2013, 963 pts were enrolled: median age 66 (range: 33 to 80), male 58%, adenocarcinoma 80%, p-T1/T2 46%/54%. Only 2 pts received pneumonectomy. All pts had completed protocol therapy. >Grade 3 toxicities (hematologic/nonhematologic) were observed in 15.9 (1.5/14.7) % in Arm A, and in 14.6 (3.6/11.9) % in Arm B, respectively. In Arm A, 59.5% of the pts completed protocol therapy, and 70.7% received UFT for >1 year, which was comparable to prior studies. In Arm B, 54.7% completed protocol therapy, and 69.9% received S-1 for > 6 months. There were 4 cases of on-protocol deaths, probably of cardio-vascular origin: 1 in Arm A and 3 in Arm B. Based on the 2[nd] interim analysis in Sep. 2015, the data and safety monitoring committee recommended the follow-up of pts without unmasking of treatment arms. Estimated combined 2-year OS and RFS were 97.3% and 89.6%, respectively.
    
    Conclusion:
    Both post-operative adjuvant therapies were feasible, with similar compliances. Main results will be available in 2019.
    
    

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