SFTPB and hypersensitivity pneumonitis: As shown in Figure 3, the haplotype “CC” of the SFTPB (rs2077079 (A/C) x rs3024798 (C/A)) is associated with decreased risk of HP and exhibited an additive, OR = 0.02 (0.002–0.2) as well as a dominant effect, OR = 0.12 (0.07–0.39).