Other potential prognostic markers arising from studies of cohorts of patients with mesothelioma include the ER stress marker CHOP (C/EBP homologous protein) [8], monocarboxylate transporter 4 (MCT4) [9], CD31 (a stromal marker) [10], periostin and phosphatase and tensin homologue (PTEN) (EMT-related molecules) [11]. Here, DDIT3 is linked to mesothelioma.