Clonally expanded B cell populations are a distinguishing feature of chronic Chagas cardiomyopathy

Chagas disease, caused by the parasite Trypanosoma cruzi, affects 10.5 million people worldwide, resulting in over 8000 deaths per year. Most of these deaths are due to chronic Chagas cardiomyopathy (CCC), a severe form of cardiomyopathy that develops in 20-30% of infected patients decades after initial infection. While the immune system is thought to play a major role in CCC, the immune mechanisms underlying CCC remain poorly understood. In this study, we initially sought to identify peripheral blood gene expression signatures that precede CCC progression in patients with Chagas disease. Our

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