Also elevated adenosine deaminase, due to T-lymphocytestimulation, might indicate sarcoidosis diagnosis and disease activity [1, 41, 42, 43].Serum chitotriosidase was verified as a good biomarker of sarcoidosis, whichshowed a higher sensitivity and specificity than other biomarkers, and correlatedwell with disease activity, severity and multiorgan dissemination [44]. This evidence concerns the gene ADA and sarcoidosis.