SNCAIP is a symbol for the gene, Synuclein alpha interacting protein, in humans. Other names include: Synphilin-1; Alpha-synuclein-interacting protein; Sph1; synphilin; SYPH1; synuclein, alpha interacting protein. The encoded protein has an amino acid length of 919 and a mass of 100.4 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Rat.