ADRB1 and metabolic syndrome: Among the 100 PET/CT patients, dyslipidemia was associated with a higher anti-β1AR Ab (median 1.263 vs. 1.034 μg/ml; p = 0.04) whereas in AP, patients with dyslipidemia trended toward lower concentrations (median 0.837 vs. 0.644 μg/ml p = 0.09).