In patients with SS-ILD, statistically significant differences were found in the following criteria: SBP before and after the 6 min walk test (p = 0.04 and p = 0.006), Borg scale before the 6 min walk test (p = 0.008), MR-proANP level (p = 0.006), and longitudinal dimension of the right atrium (p = 0.005). The gene discussed is NPPA; the disease is interstitial lung disease.