All 3NPs displayed high one-digit micromolar-level of anti-MM activity against all 10 CD138+ PC derived from MM patients, with the strongest effect exerted by As4S4/ZnS/Fe3O4 (1:4:1) with FA and Alb, for which the EC50 was on average 3–sixfold lower than that of non-PC of the same patients (Fig. 1D). Here, SDC1 is linked to Miyoshi myopathy.