Among them, 102 MM patients (87.9%) exhibited disease progression, including 71 c-maf-negative MM patients (88.7% of all c-maf-negative MM patients) and 31 c-maf-positive MM patients (86.1% of all c-maf-positive MM patients) who had a median PFS of 15.6 months (95% CI 13.6–17.6 months). Here, MAF is linked to Miyoshi myopathy.