Fei Sun, Junyan Yao, Bingjie Li, Suli Zhang, Huirong Liu. "Retraction of: Abstract 4350116: β 1 -adrenergic autoantibodies (β 1 -AA) augment macropinocytosis in CD4 + T cells, leading to the expansion of CD4 + CD28 − T cell subsets in heart failure." Circulation, 2026. doi:10.1161/cir.0000000000001444