BASE, or BPI fold containing family A member 4, pseudogene, is a human gene encoded by BPIFA4P. It may also be known as: Putative BPIFA4P protein; BPI fold containing family A, member 4, pseudogene; Breast cancer and salivary gland-expressed protein; Putative latherin; breast cancer and salivary gland expression gene; PLUNC family pseudogene. The encoded protein has an amino acid length of 179 and a mass of 19.5 kDa.