SFTPD (Surfactant Protein D) is a Protein Coding gene. Diseases associated with SFTPD include Extrinsic Allergic Alveolitis and Wilson-Mikity Syndrome. Among its related pathways are HIV Life Cycle and Surfactant metabolism. The protein encoded by SFTPD is part of the innate immune response, protecting the lungs against inhaled microorganisms and chemicals. The encoded protein may also be involved in surfactant metabolism.