Approximately 38–70 % (38.4 % [28/73], E-GEOD-6477; 70.3 % [109/155], E-MTAB-363; 68.4 % [66/133], E-GEOD-16122) of MM patients expressed PTTG1 at levels higher than the normal range (mean + 2SD of the normal cohort expression). The gene discussed is PTTG1; the disease is Miyoshi myopathy.