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Treatment of concomitant myasthenia gravis and Lambert-Eaton myasthenic syndrome with autologous CD19-targeted CAR T cells.
Neuron 2024 April 26
Myasthenia gravis (MG) and Lambert-Eaton myasthenic syndrome (LEMS) are autoimmune disorders affecting neuromuscular transmission. Their combined occurrence is rare, and treatment remains challenging. Two women diagnosed with concomitant MG/LEMS experienced severe, increasing disease activity despite multiple immunotherapies. Anti-CD19 chimeric antigen receptor (CAR) T cells have shown promise for treating autoimmune diseases. This report details the safe application of anti-CD19 CAR T cells for treating concomitant MG/LEMS. After CAR T cell therapy, both patients experienced rapid clinical recovery and regained full mobility. Deep B cell depletion and normalization of acetylcholine receptor and voltage-gated calcium channel N-type autoantibody levels paralleled major neurological responses. Within 2 months, both patients returned to everyday life, from wheelchair dependency to bicycling and mountain hiking, and remain stable at 6 and 4 months post-CAR T cell infusion, respectively. This report highlights the potential for anti-CD19 CAR T cells to achieve profound clinical effects in the treatment of neuroimmunological diseases.
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