The function of SACK1B (scaffolding CK1 anchoring protein B, ENSG00000168143) is as follows. Probable proto-oncogene that functions in the epidermal growth factor receptor/EGFR signaling pathway. Activates both the EGFR itself and downstream RAS/MAPK and PI3K/AKT/TOR signaling cascades. {ECO:0000269|PubMed:22886302, ECO:0000269|PubMed:23676467, ECO:0000269|PubMed:23912460}.