Background：This gene encodes an enzyme that converts N-acetylneuraminic acid （NeuNAc） to cytidine 5'-monophosphate N-acetylneuraminic acid （CMP-NeuNAc）. This process is important in the formation of sialylated glycoprotein and glycolipids. This modification plays a role in cell-cell communications and immune responses. Alternative splicing results in multiple transcript variants.
