SPP1 and mesothelioma: Finally, RNA sequencing of KPM cells comparative to normal pleural mesothelial cells revealed a distinctive transcriptomic signature that included classic mesothelioma markers (Msln, Spp1, Efemp1, Pdpn, Wt1) as well as new candidate mesothelioma genes (Fig 9A–C and Appendix Table S4).