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Lixin Wang



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    MA01 - Oligometastatic Disease (ID 114)

    • Event: WCLC 2019
    • Type: Mini Oral Session
    • Track: Oligometastatic NSCLC
    • Presentations: 1
    • Now Available
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      MA01.10 - Additional Local Consolidative Therapy Showed Survival Benefit Than EGFR-TKIs Alone in Bone Oligometastatic Lung Adenocarcinoma Patients (Now Available) (ID 398)

      10:30 - 12:00  |  Author(s): Lixin Wang

      • Abstract
      • Presentation
      • Slides

      Background

      Whether epidermal growth factor receptor tyrosine-kinase inhibitors (EGFR-TKIs) plus local consolidative therapy (LCT) has better survival benefit than EGFR-TKIs alone remains controversial in lung adenocarcinoma patients with EGFR mutation and bone oligometastases.

      Method

      We conducted a retrospective study to assess the effects of LCT on bone oligometastases lung adenocarcinoma patients with EGFR mutation. The primary endpoint was overall survival (OS); The secondary endpoints was progression-free survival (PFS).

      Result

      A total of 127 lung adenocarcinoma patients with EGFR mutation and bone oligometastases were identified. There were 65 patients received EGFR-TKIs alone (monotherapy group) and 62 patients received EGFR-TKIs plus local consolidative therapy (LCT) (combination group). Addition of LCT was associated with a significantly longer OS (36.3 vs. 21.0 months, P=0.01, hazard ratio [HR]=0.537, 95% confidence interval [CI]:0.360-0.801, p=0.01) and PFS (14.0 vs. 8.1 months, P=0.01, HR=0.613, 95%CI: 0.427-0.879, p=0.01) in the whole cohort (Figure 1). All subgroups showed OS benefit in faver of combination therapy except for PS scores greater than or equal to 2 group, and all subgroups analyzed derived PFS benefit in favor of combination therapy (Figure 2).

      Conclusion

      In patients with EGFR-mutant lung adenocacinoma and bone oligometastases, LCT plus EGFR-TKIs therapy was associated with significantly longer OS and PFS than EGFR-TKIs therapy alone, indicating that LCT plus EGFR-TKIs therapy might be a better therapeutic option for those patient population.

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