The measurements of PAD2 and PAD4 expression and protein citrullination in human pleural and pericardial MM with or without a history of patient’s exposure to asbestos (pleural MM/Exp+ and pleural and pericardial MM/Exp− and pleural) and benign Pleural Material (PM) was carried out using immunofluorescence method. The gene discussed is PADI4; the disease is Miyoshi myopathy.