TRIM21 and interstitial lung disease: ATA seropositivity (HR: 10.9, 95% CI: 2.48–47.8), isolated anti‐SSA seropositivity (HR: 17.0, 95% CI: 2.84–101), and diffuse skin sclerosis (HR: 3.85, 95% CI: 1.29–11.5) were independently associated with ILD‐specific PFS.