The analysis of SIX1 and DiPRO1 gene coexpression in patient-derived primary RMS cultures (Danielli et al, 2023), revealed the highest expression density of both genes in clusters corresponding to cycling (KI-67-marker) and differentiated (MYOG-marker) tumor cells (Figs. 8G and EV3C). The gene discussed is MKI67; the disease is neoplasm.