Acts as a tumor suppressor (PubMed:36882524, PubMed:38517886). Acts as a tumor suppressor for colorectal cancer cell proliferation by targeting KEAP1/USP17/ELK1/CDK6 axis (PubMed:36882524). {ECO:0000269|PubMed:36882524, ECO:0000269|PubMed:38517886}. This is the function of PGCKA1 (PDCD10 and GCKIII kinases associated 1, ENSG00000154274).