DEF8 (Differentially Expressed in FDCP 8 Homolog): DEF8 is involved in endocytic trafficking and signal transduction pathways that regulate cellular growth and differentiation. It acts as a scaffold protein, mediating the interaction between components of signaling pathways and endosomes, which is crucial for the proper distribution and function of cell surface receptors. Dysregulation of DEF8 has been implicated in cancer and immune disorders, emphasizing its role in cellular signaling and membrane trafficking....