Wilson et al. Sputum levels of TGF-β1, TNF-α, MCP-1, and IL-4 are significantly elevated in RA-ILD and a portion of these cytokines are also increased in subclinical disease and correlated with lung physiology @RheumNow #ACR22 Abstr#2253 https://t.co/V1fG0QC9od https://t.co/d2YvVIV3Jq