Respiratory Function as a Prognostic Factor for Lung Cancer in Screening and General Populations

Area of Science:

• Pulmonology
• Oncology
• Epidemiology

Background:

• Lung cancer is a leading global cause of cancer mortality.
• Screening advancements have improved detection but not fully mitigated mortality.
• Prognostic factors beyond traditional staging are crucial for personalized treatment.

Purpose of the Study:

• To evaluate respiratory function as a prognostic indicator for lung cancer survival.
• To analyze data from the UK Biobank (general population) and the National Lung Screening Trial (high-risk population).

Main Methods:

• Inclusion of patients with incident lung cancer and spirometry data.
• Measurement of lung function using forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC).
• Application of multivariable Cox proportional hazards models to assess survival impact.

Main Results:

• In UK Biobank, higher predicted FEV1 and FEV1/FVC ratio correlated with better 5-year overall survival.
• Hazard ratios indicated improved survival with better lung function in the general population.
• No statistically significant association was found in the high-risk NLST cohort.

Conclusions:

• Impaired lung function is linked to poorer lung cancer survival in the general population.
• The prognostic value of lung function was less evident in a high-risk screening population.
• Respiratory function may serve as a valuable prognostic factor for personalized lung cancer management.