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O24 - Cancer Control and Epidemiology III (ID 134)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Prevention & Epidemiology
- Presentations: 1
O24.02 - Lung cancer in South East Scotland, are we still making progress? (ID 1320)
16:15 - 17:45 | Author(s): S.C. Erridge
South-East Scotland Cancer Network (SCAN) serves 1.4 million people using unified protocols collecting prospective data. We published population-based data from 1995 and 2002 (J Thorac Oncol. 2008;3(5):491-8) demonstrating increased cancer treatment and improved overall survival. This review investigates whether this has been sustained.
Patients were identified from Scottish Cancer Registry (SCR), SCAN audit and Edinburgh Cancer Centre databases to extract tumour characteristics, initial management (usually ≤6 months of diagnosis) and overall survival (OS). Missing data was sought from patients’ health records. Multivariate analysis (MVA) examined sex, age(<60,60-69,70-79,80+), deprivation, Healthboard of residence, performance status (PS), pathology and stage (localised, regional, metastatic) affecting use of any treatment, potentially curative treatment (PCT) defined as surgery (S) or potentially curative radiotherapy (PC-RT - ≥50Gy for NSCLC or ≥40Gy+chemo for SCLC) using Cox’s proportional hazards model to obtain factors affecting survival.
1117 patients were identified in the audit. 51.5% were men, median age 72 (range 31-98) years. 47.3% were from the two most deprived quintiles. 49.5% had WHO PS 0-1, 23.5% WHO2, 24.2% WHO3-4. 58.5% NSCLC (23.5% Stage I-II, 25.7% III, 48.8% IV), 13% SCLC (37.9% stage I-III, 61.4 stage IV) and 28.5% radiology-only diagnosis (24.5% Stage I-II, 19.5% III, 52.8% IV). 59.9% received some form of treatment; 28.4% with PCT ((126 S+/-chemo(C) = 19% of NSCLC), 190 PC-RT +/- C), and 31.5% palliatively. 467 (41.8%) received any RT, 268 (24%) any C. MVA showed age >70, PS≥2, metastatic disease, ‘not-SCLC’, but not sex, deprivation or Healthboard, were associated (all p<0.01) with lower treatment delivery, and only age > 80, PS≥2, radiology-only diagnosis and non-localised disease (all p<0.01) with reduced PCT. Median survival was 5.03 months (95%CI 4.3-5.8) with 46.8% alive at 6 months, 32.0% 12 and 17.7% 24 months following diagnosis. Male sex, PS≥2 and non-localised disease were associated with increased HR for death (all p<0.01). Comparison with the 2002 cohort (n= 971, Dumfries excluded from both cohorts) showed similar age and pathology profile, but increased women, residents from most deprived quintile and metastatic disease. Uni-variate analysis showed a similar proportion received treatment (62.3% 2002 v. 59.9% 2010 p=0.14) but more received PCT (23.6% v. 28.2% p=0.02) principally through increased use of PC-RT (13.1% v. 17.1% p=0.01). On MVA (without PS) the use of any treatment reduced (OR 0.73 (0.59-0.92) however, use of PCT increased (OR 1.84 (1.37-2.47) due to more PC-RT (1.57 (1.18-2.08)), but not surgery. Median (5.16 v. 4.90 months p=0.65), 1 year (29.0% (31.9-26.1) v. 31.4% (34.3-28.5) and 2 year (14.9% (17.3-12.5) v. 17.4% (19.8-15.0) survival were unchanged.
In the last 8 years in SCAN, there has been an increase in the number of women with lung cancer along with a worsening deprivation profile and increased identification of stage IV disease, possibly through improved staging. There has been an increase in potentially curative, but reduction in all therapy delivered without any apparent impact on survival. This analysis demonstrates the challenges of improving population-based outcomes in a disease where most present with advanced disease and are often unfit for treatment .
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