Anifrolumab for treatment of refractory cutaneous lupus erythematosus.

Cutaneous lupus erythematosus (CLE) is a spectrum of skin changes related to systemic lupus erythematosus (SLE), a family of autoimmunity manifesting characteristic multisystem inflammation and damage. Treatment of CLE continues to evolve, especially for patients with moderate to severe disease. Type 1 interferon (IFN-1) plays a significant role in CLE pathogenesis. Anifrolumab, a fully humanized monoclonal antibody, selectively binds and inhibits the IFN-α receptor 1. Evidence from multiple Phase II and III randomized trials resulted in approval for anifrolumab for treatment of moderate to severe SLE. We present a case series of three patients with refractory CLE significantly improved with anifrolumab. The patients were recruited via clinic interaction and treated with anifrolumab from January 2021 to April 2022. Each patient received at least 12 weeks of therapy. Treatment and follow-up is ongoing. Patients were eligible for the study if they were a patient of the UNC Hospital System with resistant CLE, defined as having received inadequate disease control with standard therapies, including antimalarials, disease-modifying agents and biologics. Outcome measures were improvement in patient-reported symptoms and physician observation of erythema and pigmentary changes. All cases demonstrated significant improvement in disease appearance, cutaneous involvement, and symptomology after treatment with 2 months of anifrolumab infusions. Anifrolumab shows great potential for improving CLE in patients who have failed standard of care and multiple treatment options, including those that have failed belimumab or those who smoke. This report highlights the value of anifrolumab in managing patients with refractory CLE.

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