TSPAN8 and cancer: In particular, clusters 9, 10, 12, 13, 14, 16, 18, 19, 21, 26, 27, 28, 30, 34 and 35 not only expressed ductal cell markers (KRT19, MMP7, TSPAN8, SOX9 and LCN2), but also expressed cancer cell markers (MUC1 and PROM1).