HLA and environmental interactions in sarcoidosis

Milton D. Rossman, B. Thompson, Margaret Frederick, Michael C. Iannuzzi, Benjamin A. Rybicki, Janardan P. Pandey, Lee S. Newman, Cecile Rose, E. Magira, D. Monos, Steven E. Weinberger, Patricia Finn, Erik Garpestad, Allison Moran, Henry Yeager, David L. Rabin, Susan Stein, Marcie Major, Mary Maliarik, John PopovichDavid R. Moller, Carol J. Johns, Cynthia Rand, Joanne Steimel, Marc A. Judson, Susan D'Alessandro, Nancy Heister, Theresa Johnson, Daniel T. Lackland, Steven Sahn, Charlie Strange, Alvin S. Teirstein, Louis DePalo, Sheldon Brown, Marvin Lesser, Maria L. Padilla, Marilyn Marshall, Juli Barnard, Robert P. Baughman, Elyse E. Lower, Donna B. Winget, Geoffrey McLennan, Gary Hunninghake, Chuck Dayton, Linda Powers, Eddy A. Bresnitz, Ronald Daniele, Jackie Regovich, William Sexauer, Robert Musson, Joanne Deshler, Paul Sorlie, Margaret Wu, Reuben Cherniack, Genell L. Knatterud, Michael L. Terrin, Bruce W. Thompson, Kathleen Brown, Margaret Frederick, Frances LoPresti, Patricia Wilkins, Martha Canner, Judy Dotson, Steve Lindenfelser, Mark Cosentino

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60 Scopus citations


Sarcoidosis is a systemic granulomatosis of unknown etiology despite being described over 100 years ago. While both genetic predisposition and environmental exposures have been proposed as playing a role in this disease, there have not been any systematic investigations of gene-environmental interaction in this disease. In the ACCESS dataset, detailed environmental histories and high resolution HLA class II typing were performed on 476 cases of newly diagnosed sarcoidosis and 476 matched controls from the patients' community. We evaluated gene-environmental interactions in exposures or HLA class II alleles that were present in > 5% of the population and had an odd ratio of > 1.0. Four exposures and four HLA Class II alleles met these criteria and were evaluated. Significant interaction was observed between HLA DRB1*1101 and insecticide exposure at work (p < 0.10) and suggestive interaction was observed between HLA DRB1*1101 and exposure to mold and musty odors and DRB1*1501 and insecticide exposure at work (P < 0.15). In addition, HLA DRB1*1101 and insecticide exposure at work was associated with extrapulmonary sarcoidosis, specifically cardiac sarcoidosis and hypercalcemia (p<0.05) and HLA DRB1*1101 and exposure to molds and musty odors was associated with pulmonary only sarcoidosis (P < 0.05). These studies suggest that sarcoidosis is due to an interaction of genetic predisposition and environmental exposure in at least some cases of sarcoidosis. Future studies in defined phenotypes of sarcoidosis may be necessary to define environmental and genetic associations with sarcoidosis.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalSarcoidosis Vasculitis and Diffuse Lung Diseases
Issue number2
StatePublished - 2008


  • Autoimmunity
  • Genetics
  • Human
  • Lung
  • MHC


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