CSF3R (Colony Stimulating Factor 3 Receptor): CSF3R is the receptor for colony-stimulating factor 3 (CSF3), a cytokine that controls the production, differentiation, and function of granulocytes. The interaction of CSF3 with its receptor is crucial for the survival and activation of neutrophils, essential components of the innate immune response. Mutations or overexpression of CSF3R can lead to disorders of granulocyte function and proliferation, including chronic neutrophilic leukemia and severe congenital neutropenias, highlighting its role in hematopoiesis and immune defense....