In the OS, B2M (HR = 1.59, 95% CI 1.09–2.33; P = 1.74E−02), MRI (HR = 1.80, 95% CI 1.28–2.52; P = 7.52E−04), and BCAR3 (HR = 0.55, 95% CI 0.39–0.76; P = 3.33E−04) are prognostic factors for MM (Additional file 2: Table S1). Here, BCAR3 is linked to Miyoshi myopathy.