TGFB1 and systemic sclerosis: A statistically significant decrease in expression of TGFB1 and TGFB2 was observed in patients with RA-ILD and SSc-ILD compared to those with RA-nonILD and SSc-nonILD, respectively (TGFB1: p = 0.0040, Figure 1A and p = 0.0009, Figure 1B, respectively; and TGFB2: p = 0.0011, Figure 1A and p = 0.0008, Figure 1B, respectively).