Juan P de-Torres1, Jose M Marín2, Ciro Casanova3, Victor Pinto-Plata4, Miguel Divo4, Claudia Cote5, Bartolome R Celli4, Javier J Zulueta6. 1. Pulmonary Department, Clínica Universidad de Navarra, Pamplona, Spain. Electronic address: jupa65@hotmail.com. 2. Pulmonary Department, Hospital Universitario Miguel Servet, Instituto Aragones Ciencias Salud and CIBER Enfermedades Respiratorias, Zaragoza, Spain. 3. Pulmonary Department, Hospital Ntra Sra de Candelaria, Tenerife, Spain; Respiratory Research Unit, Hospital Ntra Sra de Candelaria, Tenerife, Spain. 4. Pulmonary Department, Brigham and Women's Hospital, Harvard Medical School Boston, MA. 5. Pulmonary and Critical Care Department, Bay Pines VA Medical Healthcare System, Bay Pines, FL. 6. Pulmonary Department, Clínica Universidad de Navarra, Pamplona, Spain.
Abstract
BACKGROUND: The COPD-Lung Cancer Screening Score (COPD-LUCSS) is a tool designed to help identify patients with COPD with the highest risk of developing lung cancer (LC). The COPD-LUCSS includes the determination of radiological emphysema, a potential limitation for its implementation in clinical practice. The diffusing capacity for carbon monoxide (DLCO) is a surrogate marker of emphysema and correlates well with CT-determined emphysema. OBJECTIVE: To explore the use of the COPD-LUCSS using the DLCO instead of radiological emphysema, as a tool to identify patients with COPD at higher risk of LC death. METHODS: The Body Mass Index, Airflow Obstruction, Dyspnea, Exercise Performance international cohort database was analyzed. By logistic regression analysis, we confirmed that the other parameters included in the COPD-LUCSS (age > 60, pack-years > 60, BMI < 25) were independently associated with LC death. We selected the best cutoff value for DLCO that independently predicted LC death. We then integrated the new COPD-LUCSS-DLCO assigning points to each parameter according to its hazard ratio value in the Cox regression model. The score ranges from 0 to 8 points. RESULTS: By regression analysis, age > 60, BMI <25 kg/m(2), pack-year history > 60, and DLCO < 60% were independently associated with LC diagnosis. Two COPD-LUCSS-DLCO risk categories were identified: low risk (scores 0-3) and high risk (scores 3.5-8). In comparison to patients at low risk, risk of death from LC increased 2.4-fold (95% CI, 2.0-2.7) in the high-risk category. CONCLUSIONS: The COPD-LUCSS using DLCO instead of CT-determined emphysema is a useful tool to identify patients with COPD at risk of LC death and may help in its implementation in clinical practice.
BACKGROUND: The COPD-Lung Cancer Screening Score (COPD-LUCSS) is a tool designed to help identify patients with COPD with the highest risk of developing lung cancer (LC). The COPD-LUCSS includes the determination of radiological emphysema, a potential limitation for its implementation in clinical practice. The diffusing capacity for carbon monoxide (DLCO) is a surrogate marker of emphysema and correlates well with CT-determined emphysema. OBJECTIVE: To explore the use of the COPD-LUCSS using the DLCO instead of radiological emphysema, as a tool to identify patients with COPD at higher risk of LC death. METHODS: The Body Mass Index, Airflow Obstruction, Dyspnea, Exercise Performance international cohort database was analyzed. By logistic regression analysis, we confirmed that the other parameters included in the COPD-LUCSS (age > 60, pack-years > 60, BMI < 25) were independently associated with LC death. We selected the best cutoff value for DLCO that independently predicted LC death. We then integrated the new COPD-LUCSS-DLCO assigning points to each parameter according to its hazard ratio value in the Cox regression model. The score ranges from 0 to 8 points. RESULTS: By regression analysis, age > 60, BMI <25 kg/m(2), pack-year history > 60, and DLCO < 60% were independently associated with LC diagnosis. Two COPD-LUCSS-DLCO risk categories were identified: low risk (scores 0-3) and high risk (scores 3.5-8). In comparison to patients at low risk, risk of death from LC increased 2.4-fold (95% CI, 2.0-2.7) in the high-risk category. CONCLUSIONS: The COPD-LUCSS using DLCO instead of CT-determined emphysema is a useful tool to identify patients with COPD at risk of LC death and may help in its implementation in clinical practice.
Authors: Dámaso Parrón Collar; Mario Pazos Guerra; Paula Rodriguez; Carolina Gotera; Ignacio Mahíllo-Fernández; Germán Peces-Barba; Luis M Seijo Journal: Int J Chron Obstruct Pulmon Dis Date: 2017-03-30
Authors: Shailesh Advani; Dongyu Zhang; Martin Tammemagi; Tomi Akinyemiju; Michael K Gould; Gerard A Silvestri; Dejana Braithwaite Journal: Ann Am Thorac Soc Date: 2021-11