IL17A and systemic sclerosis: Therefore, we stratified SSc patients based on FVC%/DLCO% ratio \documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\ge$$\end{document} or < 1.6 and examined the levels of IL-17A and IL-6.