SAMD14 (sterile alpha motif domain containing 14) is a multifunctional protein with emerging roles in hematopoiesis, cancer biology, and immune regulation. Structurally, SAMD14 contains actin-binding domains and localizes to the cytoplasm and neuronal compartments, where it interacts with actin capping proteins 1. In hematopoiesis, SAMD14 is controlled by an anemia-activated E-box-GATA transcriptional enhancer and is essential for acute anemia recovery by promoting stem cell factor/Kit signaling through MAPK and PI3K/Akt pathways in stress erythroid precursors 12. Beyond erythropoiesis, SAMD14 functions as a putative tumor suppressor. In gastric cancer, SAMD14 promoter hypermethylation (56.7% of cases) is associated with gene silencing and poor prognosis, functioning as an independent survival predictor 3. Similar epigenetic inactivation occurs in pulmonary adenocarcinoma, where SAMD14 hypermethylation is specific to invasive disease (33.3%) but absent in normal lung tissue 4. In the prostate tumor microenvironment, mast cell-derived SAMD14 is downregulated in tumor regions; restoration of SAMD14 expression suppresses pro-tumorigenic fibroblast and epithelial phenotypes 5. Additionally, long noncoding RNA lnc-SAMD14-4 regulates collagen expression in osteoarthritis chondrocytes 6, and SAMD14 serves as an autoantigen in primary CNS lymphoma through atypical N-glycosylation 7. These findings establish SAMD14 as a context-dependent regulator of hematopoietic signaling and an epigenetically silenced tumor suppressor.