A recently developed frailty index may be a valuable way to quantify vulnerability in patients with systemic lupus erythematosus (SLE), according to a study published in Arthritis & Rheumatology.1 When evaluating SLE, physicians consider a patient’s disease activity, organ damage and health-related quality of life. The Systemic Lupus International Collaborating Clinics (SLICC)/ACR Damage Index (SDI)…