CD328, or Sialic acid binding Ig-like lectin 7, is a human gene encoded by SIGLEC7. It may also be known as: Sialic acid-binding Ig-like lectin 7; Adhesion inhibitory receptor molecule 1; AIRM-1; CDw328; D-siglec; QA79 membrane protein; CD antigen CD328; Siglec-7; AIRM1; QA79; SIGLEC19P; p75/AIRM1. The encoded protein has an amino acid length of 467 and a mass of 51.1 kDa. Other isoforms may exist. CD328 is a member of the Immunoglobulin superfamily, SIGLEC (sialic acid binding Ig-like lectin) family.