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Granulomatous Exposure-Related Lung Disease Lab

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Briana Barkes



Whittier College, BA 
University College Dublin, MPH 


Briana Barkes graduated with a degree in sociology and history from Whittier College. She went on to receive her Masters in Public Health in Dublin, Ireland. She has been at National Jewish Health since 2006, assisting in design, implementation and management of multi-site/multi-institution epidemiological and clinical studies involving chronic beryllium disease, sarcoidosis, and other granulomatous and occupational lung diseases.  

Christina Gatsiopoulos

Data Support Rep


Christina is a Denver native and fierce animal lover. She has been culling data for various research projects in Occupational Medicine since 2008.

Joshua Macaluso

Lab Researcher


Louisiana State University, BS 2020


Josh Macaluso graduated with a degree in Biochemistry from Louisiana State University in 2020. He was born and raised in Northern Colorado and moved back in January 2021. He joined Dr. Maier’s laboratory in March 2022, and is currently working on projects involving granulomatous and occupational lung diseases, including sarcoidosis and chronic beryllium disease.

Kristyn MacPhail

Lab Manager


Michigan State University, BS 2005


Kristyn MacPhail graduated with a Bachelor’s degree in zoology and genetics from Michigan State University in 2005.  She moved to Colorado in June of the same year and joined Dr. Maier’s laboratory, where she has worked on multiple research projects over the years involving allergies, chronic beryllium disease, sarcoidosis, and other granulomatous and occupational lung diseases.

Peggy Mroz

Epidemiologist Lead


University of Illinois, BS in Biology
University of Colorado, MSPH


Peggy Mroz, MSPH, is Lead Epidemmiologist in the Division of Environmental and Occupational Health Sciences at National Jewish Health.  She received her MSPH, with an emphasis in Epidemiology, from the University of Colorado Denver and has been involved in study design, coordination and conduct of beryllium and sarcoidosis related health effects studies ever since.  Ms. Mroz has wide and diverse experience as it relates to beryllium in worker populations and development of medical surveillance programs for government and private industries.  She has studied rates and determinants of chronic beryllium disease and beryllium sensitivity in worker populations worldwide and has provided beryllium-related education for workers, community members, and healthcare professionals. Ms. Mroz is also involved in research focused on defining genetic, genomic and epigenetic and exposure risk factors in occupational, environmental and idiopathic granulomatous lung diseases. 

Christina Riley

Senior Clinical Research Coordinator


College America, BA, AA 2016


Christina Riley graduated with a degree in healthcare administration and medical specialties and has been a clinical research coordinator since 2015. She has been at National Jewish Health since 2017, working on projects involving chronic beryllium disease, sarcoidosis and other granulomatous and occupational lung diseases.