The 2019 European League Against Rheumatism/American College of Rheumatology classification criteria for SLE include at least one positive antinuclear antibody (ANA) test as a mandatory entry criterion, followed by additive weighted standards grouped in seven clinical (constitutional, haematological, neuropsychiatric, serosal, musculoskeletal, renal, and mucocutaneous) and three immunological (antiphospholipid antibodies, complement proteins, and SLE‐specific antibodies) domains weighted from 2 to 10, with patients accumulating ≥10 points being diagnosed with SLE.2 Here, BTG3 is linked to systemic lupus erythematosus.