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MINI 17 - WT EGFR, Angiogenesis and OMD (ID 131)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
MINI17.13 - Prognosis of Stage III NSCLC Patients Presenting with Isolated Brain Failure after Definitive Concurrent Chemoradiotherapy (ID 1338)
16:45 - 18:15 | Author(s): Y. Ozdemir
We retrospectively investigated the survival outcomes of stage III non-small-cell lung cancer (NSCLC) patients presenting with isolated brain failures (IBF) after definitive concurrent chemoradiotherapy (C-CRT) and treated with whole brain radiotherapy (WBRT) ± stereotactic radiosurgery (SRS) or surgery.
A total of 162 patients with stage III NSCLC who were treated with platinum based C-CRT between January 2007 and December 2012 and presented with proven IBF with/without locoregional failures were included in this retrospective analysis. All patients received WBRT of 20-30 Gy (3-4 Gy/fx) ± SRS of 16-22 Gy or surgery. The primary and secondary end points were overall survival (OS) and identification of factors associated with longer survival.
Median follow-up was 12.7 months from the IBF diagnosis.IBF occurred at median 7.8 months (range: 1.7-46.4) from the commencement of C-CRT.WBRT was the sole local intervention in 78 patients whereas 55 and 29 patients received additional SRS or surgery mostly prior to WBRT. Median and 3-year survival rates were 11.7 months and 20.4%, respectively. In univariate analysis, controlled primary (20.3 vs. 6.4 months; p<0.001) and absence of extracranial metastasis development during follow-up (23.3 vs. 10.6 months; p<0.001) were determined to be significantly associated with longer OS times, which also retained their independent significance in multivariate analysis. Addition of SRS or surgery was related with better brain control rates but not OS in overall population. However, in patients presenting with ≤3 brain lesions and controlled lung primary the addition of SRS or surgery to WBRT was associated with significantly superior OS times than WBRT alone (25.8 vs. 8.2 months; p<0.001).
Present results demonstrated that controlled lung primary and absence of extracranial metastasis development during follow-up period were the factors positively associated with longer OS after WBRT ± SRS or surgery in stage III NSCLC patients presenting with IBF after platinum based C-CRT.Additionally, our results suggested superior survival with addition of SRS or surgery to WBRT in patients with 1-3 brain lesions and controlled lung primaries.