This study aimed to measure the expression levels of four CT antigen genes, MAGE-C1/CT7, MAGE-A3, MAGE-C2/CT10 and SSX-2, in samples of bone marrow from Chinese patients with MM using real-time quantitative PCR (qPCR), and to explore the clinical implications of CT antigen gene expression levels. Here, MAGEA3 is linked to Miyoshi myopathy.