In contrast, greater IL8 serum levels were observed in both SMM and MM, -median (range) of 115 (13–2013) and 54 (0.0–1071) vs. 14 (5–29) pg/mL in HD, respectively (p ≤ 0.01), but not in MGUS (p = 0.13). This evidence concerns the gene CXCL8 and Miyoshi myopathy.