CTSG and Miyoshi myopathy: Many xenograft MM models are generated using various immune-compromised mice, including SCID, non-obese diabetic (NOD)/SCID, NOD.Cg-PrkdcscidIl2rgTM 1Sug/ShiJic (NOG), and NOD.Cg-PrkdcscidIl2rgTM 1Wjl/SzJ mouse (NSG).