Unambiguously identified up-regulated proteins in tumour cells SM5 included: vinculin, serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A α isoform, prolyl 4-hydroxylase α-1 subunit, α enolase, ERC-55, eukaryotic translation initiation factor 3 subunit 4, eukaryotic translation initiation factor 2 subunit 1, triosephosphate isomerase, nucleoside diphosphate kinase B and in tumour cells SM7: 40 kDa peptidyl-prolyl cis-trans isomerase, acyl-protein thioesterase 1, and nudC domain-containing protein 2. The gene discussed is TPI1; the disease is neoplasm.