Review Article

Modulation of ERQC and ERAD: A Broad-Spectrum Spanner in the Works of Cancer Cells?

Table 1

ERQC/ERAD components and association of their expression levels with cancer patient survival in the Human Protein Atlas (HPA) [24, 25].

Protein/gene and UniProt entry/namePrognosis upon overexpression (Human Protein Atlas, )Frequency of somatic mutations in cancer (COSMIC)

GCS1/MOGS, Q13724/MOGS_HUMANUnfavourable prognosis in renal, liver, and colorectal cancers191/47211 (0.4%)
ER αGlu II α subunit/GANAB, Q14697/GANAB_HUMANUnfavourable prognosis in liver and urothelial cancers254/47211 (0.5%)
ER αGlu II β subunit/PRKCSH, P14314/GLU2B_HUMANUnfavourable prognosis in renal cancer191/47211 (0.4%)
UGGT1/UGGT1, Q9NYU2/UGGG1_HUMANUnfavourable prognosis in renal cancer333/47297 (0.7%)
UGGT2/UGGT2, Q9NYU1/UGGG2_HUMANUnfavourable prognosis in lung and liver cancers406/47212 (0.8%)
Sep15/Sep15, O60613/SEP15_HUMANUnfavourable prognosis in liver, head, and neck cancers but favourable prognosis in colorectal cancer17/47187 (0.04%))
Calnexin/CANX, P27824/CALX_HUMANFavourable prognosis in colorectal cancer but unfavourable in thyroid cancer151/47211 (0.3%)
Calreticulin/CALR, P27797/CALR_HUMANFavourable prognosis in ovarian cancer but unfavourable in renal cancer4344/81169 (5.3%)
ER UDPase, O75356, ENTP5_HUMANFavourable prognosis in renal cancer110/47209 (0.2%)
ER αMan I, Q9UKM7, MA1B1_HUMANUnfavourable prognosis in liver cancer178/47354 (0.4%)
EDEM1, Q92611, EDEM1_HUMANN/A141/47255 (0.3%)
EDEM2, Q9BV94 EDEM2_HUMANUnfavourable prognosis in renal cancer162/35626 (0.4%)
EDEM3, Q9BZQ6 EDEM3_HUMANUnfavourable prognosis in renal cancer231/35629 (0.6%)
ERDJ5, Q8IXB1, DJC10_HUMANFavourable prognosis in endometrial cancer but unfavourable in renal and thyroid cancers205/47347 (0.4%)
HRD1, Q86TM6, SYVN1_HUMANFavourable prognosis in head and neck cancer143/47298 (0.3%)
OS-9/, Q13438/OS9_HUMANN/A188/47797 (0.4%)

The HPA correlation () between high levels of expression of the protein with the survival rates of cancer patients is reported, together with the frequency of somatic mutations detected in the same genes, as per the Catalogue of Somatic Mutations in Cancer (COSMIC) [27]. For comparison, the tumour suppressors TP53 and CDKN2A have mutation frequencies of 25% (40416/160297) and 6% (6067/100370), respectively.