Wei et al. developed [68Ga]Ga-labeled BCMA nanobodies that enabled visualization of BCMA expression in preclinical MM models, while Thomas et al. introduced a [64Cu]Cu-labeled anti-BCMA nanoparticle-antibody construct that improved lesion detection in the spine and femur of MM-bearing mice 13, 23. Here, TNFRSF17 is linked to Miyoshi myopathy.