Background: People with systemic lupus erythematosus (SLE) are at risk of developing complications in their blood vessels. This can increase the risk of heart attacks or stroke. No medications have been effective at reducing this risk in people with lupus. Objective: To test whether a drug (anifrolumab) can improve blood vessel function and reduce blood vessel inflammation in people with SLE. Eligibility: People aged 18 to 80 years with SLE. Design: Participants will undergo screening. They will have a physical exam. They will have blood and urine tests. They will have a test of their heart function and a chest X-ray. They will answer questions about their SLE symptoms. Participants will visit the clinic 9 times in 8 months. After screening, visits will be 4 weeks apart. Each visit may take up to 4 hours. Participants will receive infusions from a tube attached to a needle inserted into a vein in the arm (IV). Some will receive anifrolumab. Others will receive a placebo treatment. They will not know which one they are getting. At some visits they will have additional tests: CAVI (cardio-ankle vascular index) tests blood vessel function. Participants will lie still for 20 minutes. Small electrodes will be placed on both wrists with stickers. A microphone will be placed on their chest. Blood pressure cuffs will be wrapped around their ankles and arms. FDG-PET/CT is an imaging procedure. Participants will receive a substance through an IV line. They will lie on a table for 110 minutes while a machine captures images of their body.
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role of anifrolumab
Timeframe: 8 months