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Liang Wang
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P1.14 - Radiotherapy (ID 700)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Radiotherapy
- Presentations: 1
- Moderators:
- Coordinates: 10/16/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P1.14-004 - Outcomes of Stereotactic Body Radiotherapy and Surgery in Treating Early Stage Non-Small Cell Lung Cancer: A Meta-Analysis (ID 7399)
09:30 - 16:00 | Presenting Author(s): Liang Wang
- Abstract
Background:
To provide a promising option for early stage non-small-cell lung cancer (NSCLC) treatment, a meta-analysis of stereotactic body radiotherapy (SBRT) and surgery in lung cancer was carried out.
Method:
Literatures were retrieved from the databases of PubMed, Embase and the Cochrane library and qualities were assessed by Nine Stars System Scale. All of the statistical analyses were conducted using Stata 11.0. Risk ratios (RRs) with its 95% confidence interval (CI) were set as effective indicators. Heterogeneity was estimated by Q statistics and I[2], and the publication bias was evaluated by Egger test.
Result:
A total of 12 high-quality studies were enrolled in this study (Table 1). No significant difference was identified in 1-year overall survival (OS) rate between SBRT and surgery. An obvious higher 3-year OS rate was detected in surgery compared with SBRT (RR = 0.78, 95% CI: 0.63 - 0.97). Moreover, superior 5-year OS rates were also identified in surgery (RR = 0.69, 95% CI: 0.52 - 0.91) and lobectomy (RR = 0.58, 95% CI: 0.47 - 0.72) compared with SBRT. The 3-year loco-regional recurrence control rate in SBRT was remarkably higher than that in surgery (RR = 1.11, 95% CI: 1.01 - 1.22), but the pooled 5-year distant recurrence control rate of SBRT was markedly lower than that in surgery (RR = 0.87, 95% CI: 0.76 - 0.99). Table 1 Characteristics of the included studies.
RCT, randomized controlled trial; RCS, Retrospective cohort study; SBRT, Stereotactic body radiotherapy; SR, survival rate; SLR, sublobar resection; DCR, distant control rate.Study Year Country Duration Design Stage Follow up time Treatment Sample size Male/Female Age (years) Outcomes Chang 2015 Multi centers 2008- 2014 RCT I 40.2 months SBRT 31 14/17 67.3 (9.2) 1y SR; 3y SR; 3y DCR 35.4 months Surgery 27 11/16 67.3 (8.2) Crabtree 2010 USA 2000- 2007 RCS I 5 years SBRT 57 NA 71 (50-94) 3y SR Surgery 57 NA 73 (47-90) Crabtree 2014 USA 2004- 2010 RCS I 5 years SBRT 56 29/27 70.7 (10.6) 1y SR; 1y DCR; 3y SR; 3y DCR; 5y SR; 5y DCR Surgery 56 32/24 70.0 (8.1) Hamaji 2015 Japan 2003- 2009 RCS I 40.7 months SBRT 41 31/10 73 (58-85) 3y SR; 5y SR 54 months Lobectomy 41 32/9 74 (61-86) Matsuo 2014 Japan 2003- 2009 RCS I 6.7 years SBRT 53 42/11 76 (58-86) 5y SR; 5y DCR 5.3 years SLR 53 37/16 76 (50-88) Mokhles 2015 the Netherlands 2003- 2012 RCS I 28 months SBRT 73 42/31 67 (10) 1y SR; 1y LGR; 1y DCR; 5y SR; 5y LGR; 5y DCR 49 months Lobectomy 73 44/29 67 (9) Palma 2011 the Netherlands 2005- 2007 RCS I 43 months SBRT 60 40/20 79 (76–81) 1y SR; 3y SR Surgery 60 40/20 79 (76–80) Paul 2016 USA 2007- 2013 RCS I 6.25 years SBRT 201 76/125 76.9 (6.1) 3y SR SLR 201 78/123 76.8 (6.0) Puri 2015 USA 1998- 2010 RCS I 36.5 months SBRT 5355 2407/2948 74.3 (8.5) 3y SR 36.5 months Surgery 5355 2382/2973 74.2 (8.4) Varlotto 2013 USA 1999- 2008 RCS I 25.8 months SBRT 72 NA 73.3 3y SR; 3y LGR; 5y SR; 5y LGR Lobectomy 72 NA 68.6 SBRT 17 NA 73.3 3y SR; 3y LGR; 5y SR; 5y LGR SLR 17 NA 67.5 Verstegen 2013 the Netherlands 2007 RCS I–II 60 months SBRT 64 37/27 70.5(9.9) 1y SR; 1y LGR; 1y DCR; 3y SR; 3y LGR; 3y DCR 48 months Lobectomy 64 36/28 67.9 (8.8) Wang 2016 China 2002- 2010 RCS I 58.7 months SBRT 35 33/2 77.1 (5.2) 1y SR; 1y LGR; 3y SR; 3y LGR; 5y SR; 5y LGR Surgery 35 33/2 74.8 (6.6)
Conclusion:
SBRT might have a superior loco-regional recurrence control in early stage of NSCLC, but the OS rate was lower than that in surgery. However, well-designed investigation with a larger sample was still need to verify and update this conclusion.
