Lupus nephritis (LN) and the presence of U1-RNP antibodies are significantly associated with low bone mineral density (BMD) and osteoporosis among patients with systemic lupus erythematosus (SLE), according to study findings published in Arthritis Research & Therapy. These results highlight the need for targeted bone health assessments in high-risk SLE subgroups. Although SLE is a well-recognized risk factor for osteoporosis and fragility fractures, the relative contribution of disease-specific factors remains incompletely understood. They focused on the relationship between clinical and serologic features and bone health measures. Clinical remission, higher body mass index, elevated Siglec-1 levels, and better physical function (higher health assessment questionnaire scores) correlated with higher BMD.