SLC39A8 (Solute Carrier Family 39 Member 8) is a gene that encodes a transporter protein responsible for the cellular uptake of vital divalent metals such as zinc and manganese. This protein helps maintain metal ion balance, which is crucial for immune function, brain development, and other biological processes. Variations in SLC39A8 have been associated with several health conditions, including congenital disorders affecting glycosylation.