• Carlos A C Pereira, Marina C Dornfeld, Robert Baughman, and Marc A Judson.
• aFederal University of São Paulo, São Paulo, Brazil bUniversity of Cincinnati Medical Center, Cincinnati, Ohio cAlbany Medical College, Albany, New York, USA.
• Curr Opin Pulm Med. 2014 Sep 1; 20 (5): 496-502.

Purpose Of ReviewTo describe the methods for derivation of clinical phenotypes in general and how they should be applied in sarcoidosis, taking into account the dimensions of the disease. The results from the small number of studies in this area are summarized.Recent FindingsClinical phenotypes are determined by diverse ways. In sarcoidosis, some studies defined clinical phenotypes based on severity of disease and outcome after treatment of variable duration. A second approach to characterize clinical phenotypes is by using analytic or multivariate techniques. This approach considers several domains of disease and does not make assumptions a priori, with the hypothesis being developed after the results. A small study used factorial analysis for this purpose. Some well defined clinical phenotypes are described and future directions for research are given.SummaryClinical phenotypes, by examining relationships between several domains in sarcoidosis, are likely to better delineate the underlying processes and pathways. Larger studies with appropriate methods should be performed to better delineate clinical phenotypes in sarcoidosis.

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