UBC and non-small cell lung carcinoma: Tang et al. revealed that ubiquitin was highly expressed in NSCLC tissues; however, increased ubiquitin was attributed to the increased transcripts of ubiquitin C (UBC) rather than UBB. Moreover, they showed that no significant difference was observed in the UBB mRNA level between NSCLC and normal lung tissues (P = 0.167) [26].