The clinical features of the overlap between COPD and asthma

Megan Hardin, Edwin K Silverman, R Graham Barr, Nadia N Hansel, Joyce D Schroeder, Barry J Make, James D Crapo, Craig P Hersh, COPDGene Investigators, Jeffrey Curtis, Ella Kazerooni, Nicola Hanania, Philip Alapat, Venkata Bandi, Kalpalatha Guntupalli, Elizabeth Guy, Antara Mallampalli, Charles Trinh, Mustafa Atik, Dawn DeMeo, Craig Hersh, George Washko, Francine Jacobson, R Graham Barr, Byron Thomashow, John Austin, Neil MacIntyre Jr, Lacey Washington, H Page McAdams, Richard Rosiello, Timothy Bresnahan, Charlene McEvoy, Joseph Tashjian, Robert Wise, Nadia Hansel, Robert Brown, Gregory Diette, Richard Casaburi, Janos Porszasz, Hans Fischer, Matt Budoff, Amir Sharafkhaneh, Charles Trinh, Hirani Kamal, Roham Darvishi, Dennis Niewoehner, Tadashi Allen, Quentin Anderson, Kathryn Rice, Marilyn Foreman, Gloria Westney, Eugene Berkowitz, Russell Bowler, Adam Friedlander, David Lynch, Joyce Schroeder, John Newell Jr, Gerard Criner, Victor Kim, Nathaniel Marchetti, Aditi Satti, A James Mamary, Robert Steiner, Chandra Dass, William Bailey, Mark Dransfield, Hrudaya Nath, Joe Ramsdell, Paul Friedman, Geoffrey McLennan, Edwin J R van Beek, Brad Thompson, Dwight Look, Fernando Martinez, MeiLan Han, Ella Kazerooni, Christine Wendt, Tadashi Allen, Frank Sciurba, Joel Weissfeld, Carl Fuhrman, Jessica Bon, Antonio Anzueto, Sandra Adams, Carlos Orozco, Mario Ruiz, James Crapo, Edwin Silverman, Barry Make, Elizabeth Regan, Jonathan Samet, Sarah Moyle, Douglas Stinson, Terri Beaty, Barbara Klanderman, Nan Laird, Christophe Lange, Michael Cho, Stephanie Santorico, John Hokanson, Dawn DeMeo, Nadia Hansel, Jacqueline Hetmanski, Tanda Murray, John Reilly, Harvey Coxson, Philip Judy, Eric Hoffman, Raul San Jose Estepar, James Ross, Rebecca Leek, Jordan Zach, Alex Kluiber, Jered Sieren, Heather Baumhauer, Verity McArthur, Dzimitry Kazlouski, Andrew Allen, Tanya Mann, Robert Jensen, Homayoon Farzadegan, Stacey Meyerer, Shivam Chandan, Samantha Bragan, James Murphy, Douglas Everett, Ruthie Knowles, Amber Powell, Carla Wilson, John Hokanson, Jennifer Black-Shinn, Gregory Kinney, Megan Hardin, Edwin K Silverman, R Graham Barr, Nadia N Hansel, Joyce D Schroeder, Barry J Make, James D Crapo, Craig P Hersh, COPDGene Investigators, Jeffrey Curtis, Ella Kazerooni, Nicola Hanania, Philip Alapat, Venkata Bandi, Kalpalatha Guntupalli, Elizabeth Guy, Antara Mallampalli, Charles Trinh, Mustafa Atik, Dawn DeMeo, Craig Hersh, George Washko, Francine Jacobson, R Graham Barr, Byron Thomashow, John Austin, Neil MacIntyre Jr, Lacey Washington, H Page McAdams, Richard Rosiello, Timothy Bresnahan, Charlene McEvoy, Joseph Tashjian, Robert Wise, Nadia Hansel, Robert Brown, Gregory Diette, Richard Casaburi, Janos Porszasz, Hans Fischer, Matt Budoff, Amir Sharafkhaneh, Charles Trinh, Hirani Kamal, Roham Darvishi, Dennis Niewoehner, Tadashi Allen, Quentin Anderson, Kathryn Rice, Marilyn Foreman, Gloria Westney, Eugene Berkowitz, Russell Bowler, Adam Friedlander, David Lynch, Joyce Schroeder, John Newell Jr, Gerard Criner, Victor Kim, Nathaniel Marchetti, Aditi Satti, A James Mamary, Robert Steiner, Chandra Dass, William Bailey, Mark Dransfield, Hrudaya Nath, Joe Ramsdell, Paul Friedman, Geoffrey McLennan, Edwin J R van Beek, Brad Thompson, Dwight Look, Fernando Martinez, MeiLan Han, Ella Kazerooni, Christine Wendt, Tadashi Allen, Frank Sciurba, Joel Weissfeld, Carl Fuhrman, Jessica Bon, Antonio Anzueto, Sandra Adams, Carlos Orozco, Mario Ruiz, James Crapo, Edwin Silverman, Barry Make, Elizabeth Regan, Jonathan Samet, Sarah Moyle, Douglas Stinson, Terri Beaty, Barbara Klanderman, Nan Laird, Christophe Lange, Michael Cho, Stephanie Santorico, John Hokanson, Dawn DeMeo, Nadia Hansel, Jacqueline Hetmanski, Tanda Murray, John Reilly, Harvey Coxson, Philip Judy, Eric Hoffman, Raul San Jose Estepar, James Ross, Rebecca Leek, Jordan Zach, Alex Kluiber, Jered Sieren, Heather Baumhauer, Verity McArthur, Dzimitry Kazlouski, Andrew Allen, Tanya Mann, Robert Jensen, Homayoon Farzadegan, Stacey Meyerer, Shivam Chandan, Samantha Bragan, James Murphy, Douglas Everett, Ruthie Knowles, Amber Powell, Carla Wilson, John Hokanson, Jennifer Black-Shinn, Gregory Kinney

Abstract

Background: The coexistence of COPD and asthma is widely recognized but has not been well described. This study characterizes clinical features, spirometry, and chest CT scans of smoking subjects with both COPD and asthma.

Methods: We performed a cross-sectional study comparing subjects with COPD and asthma to subjects with COPD alone in the COPDGene Study.

Results: 119 (13%) of 915 subjects with COPD reported a history of physician-diagnosed asthma. These subjects were younger (61.3 vs 64.7 years old, p=0.0001) with lower lifetime smoking intensity (43.7 vs 55.1 pack years, p=0.0001). More African-Americans reported a history of asthma (33.6% vs 15.6%, p<0.0001). Subjects with COPD and asthma demonstrated worse disease-related quality of life, were more likely to have had a severe COPD exacerbation in the past year, and were more likely to experience frequent exacerbations (OR 3.55 [2.19, 5.75], p<0.0001). Subjects with COPD and asthma demonstrated greater gas-trapping on chest CT. There were no differences in spirometry or CT measurements of emphysema or airway wall thickness.

Conclusion: Subjects with COPD and asthma represent a relevant clinical population, with worse health-related quality of life. They experience more frequent and severe respiratory exacerbations despite younger age and reduced lifetime smoking history.

Trial registration: ClinicalTrials.gov: NCT00608764.

Figures

Figure 1
Figure 1
Exacerbations: Percentage of frequent and severe exacerbations among subjects with COPD compared to subjects with COPD and asthma. *p < 0.0001 for the difference between COPD and COPD with asthma.

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Source: PubMed

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