Results . Verlindamycin inhibits neuroblastoma cell proliferation and enhances the growth-inhibitory effect of ATRA . In order to analyze the effects of verlindamycin (Fig. 1A ), we first performed dose–response assays in a panel of neuroblastoma cell lines. Verlindamycin inhibited growth in all neuroblastoma cell lines tested with GI 50 values in the micromolar range (Fig. 1B and Supplementary Fig. 1 ). MYCN -amplified cells were more sensitive to the compound compared with non ...