ST20 (Suppressor Of Tumorigenicity 20): ST20, also known as MINK1, is a protein belonging to the germinal center kinase (GCK) family. It plays a role in key cellular processes such as apoptosis, cytoskeletal reorganization, and cell migration, and is involved in signaling pathways that regulate cell survival and proliferation. Its function in tumour development and potential as a tumour suppressor continue to be active areas of research, with significant implications for cancer biology and treatment.