Compared to the controls, MM patients had significantly higher mean levels for adiponectin (7.75 × 107 vs. 5.21 × 107 pg/mL, p = 0.003), resistin (9590 vs. 5471 pg/mL, p < 0.001), chemerin (131 vs. 101 pg/mL, p = 0.006), adipsin (4.25 × 106 vs. 2.83 × 106 pg/mL, p < 0.001), TSP-1 (4439 vs. 3261 ng/mL, p < 0.001), and MPO (110 vs. 95 ng/mL, p = 0.043) in the serum samples. Here, RETN is linked to Miyoshi myopathy.