Brehm and co-workers screened their αMCSP-ETA′ compound for differential binding and cytotoxic activity towards notoriously aggressive CSPG4+ eRMS and aRMS cell lines (RD, FL-OH1, TE-671 and Rh30) versus a CSPG4-negative lymphoma line (Figure 3). Here, CSPG4 is linked to lymphoma.