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Does smoking status after a diagnosis of lung cancer matter? Impact of quitting on 1 year survival

Rachel Roberts, Keir Lewis
European Respiratory Journal 2015 46: OA269; DOI: 10.1183/13993003.congress-2015.OA269
Rachel Roberts
1Research & Development, Hywel Dda University Health Board, Llanelli, United Kingdom
2Respiratory Medicine, Hywel Dda University Health Board, Llanelli, United Kingdom
3College of Medicine, Swansea University, Swansea, United Kingdom
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Keir Lewis
1Research & Development, Hywel Dda University Health Board, Llanelli, United Kingdom
2Respiratory Medicine, Hywel Dda University Health Board, Llanelli, United Kingdom
3College of Medicine, Swansea University, Swansea, United Kingdom
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Abstract

Despite advances in radiology and chemotherapy, the 5-year survival for Lung Cancer (LC) remains at under 10%. Studies suggest that continued smoking after a diagnosis of LC independently worsens quality of life and shortens life expectancy but these are small, retrospective studies where smoking was self-reported and only at baseline.

In a UK multicentre trial (NCT01192256) we followed patients with newly diagnosed LC for up to 12 months. Self-reported smoking status was verified by serial exhaled carbon monoxide levels. All were offered smoking cessation and standard treatments according to best practice.

1 year mortality data for the first 822 patients was analysed. Kaplan-Meier survival estimates at 12 months are shown in the following table: A log rank test confirmed a significant difference in survival, X2 (4) = 12.641, P = 0.013 with quitting smoking at diagnosis resulting in improved 1 year survival.

Smoking StatusSurvival estimates(SE)
Quit within 3months following diagnosis61.5% (6.7%)
Never smoked59.6% (7.2%)
Quit more than 12months prior to diagnosis49.1% (2.7%)
Quit less than 12months prior to diagnosis47.6% (4.4%)
Continued to smoke41.0% (3.1%)

Survival estimates at 12months

This is the first prospective study to show people who quit smoking within 3months of LC diagnosis have increased survival compared to those who continue to smoke. Further analysis regarding effects of smoking status on survival according to LC staging, histology as well as any effect on treatment complications and quality of life is on going. Our findings to date indicate that stopping smoking is associated with significantly better prognosis in patients newly diagnosed with LC.

  • Smoking
  • Lung cancer / Oncology
  • Education
  • Copyright ©ERS 2015
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Does smoking status after a diagnosis of lung cancer matter? Impact of quitting on 1 year survival
Rachel Roberts, Keir Lewis
European Respiratory Journal Sep 2015, 46 (suppl 59) OA269; DOI: 10.1183/13993003.congress-2015.OA269

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Does smoking status after a diagnosis of lung cancer matter? Impact of quitting on 1 year survival
Rachel Roberts, Keir Lewis
European Respiratory Journal Sep 2015, 46 (suppl 59) OA269; DOI: 10.1183/13993003.congress-2015.OA269
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