Receiver operating characteristic curve analysis demonstrated that pleural carcinoembryonic antigen (CEA) and hyaluronic acid (HA) could discriminate MM from LC with an area under the curve of 0.925 (95% confidence interval [CI]: 0.879–0.972, P < .001) and 0.815 (95% CI: 0.686–0.943, P < .001), respectively. This evidence concerns the gene CEACAM5 and Miyoshi myopathy.