Analysis of genomic copy number abnormalities (CNA) in mesothelioma, using arrayMap [18] showed no indications of genetic alteration in CALB2 gene (Supplementary Figure 1) while a study has described loss at 16q22 in two out of 18 mesothelioma cases [19], indicating that upregulation of calretinin expression in mesothelioma is not linked to increased gene copy number. This evidence concerns the gene CALB2 and mesothelioma.