BTG3 and systemic lupus erythematosus: ANA: antinuclear antibodies; Anti-dsDNA: anti-double-stranded DNA; DMARDs: disease-modifying antirheumatic drug; SDI: Systemic Lupus International Collaborating Clinics/American College of Rheumatology (SLICC/ACR) Damage Index; SLE: Systemic Lupus Erythematosus; SLEDAI-2 K: Systemic Lupus Erythematosus Disease Activity Index 2000.