Clinical Impact of Semaglutide in Patients with Heart Failure and Preserved Ejection Fraction

Background: The clinical impact of oral semaglutide on cardiac biomarkers in real-world patients with heart failure with preserved ejection fraction (HFpEF) and type 2 diabetes mellitus (T2DM) remains unclear. We evaluated whether initiation of oral semaglutide was associated with a reduction in B-type natriuretic peptide (BNP) levels and explored factors associated with this response. Methods: We retrospectively enrolled 27 patients with HFpEF who initiated oral semaglutide for T2DM management at a single academic center. Clinical data were collected at three time points: three months before treatment initiation (pre-treatment period), at initiation (baseline), and three months after semaglutide initiation (on-treatment period). The primary outcome was the change in the common logarithm of BNP levels (log BNP) during the on-treatment versus pre-treatment period. Results: Median age was 67 (59, 78) years and 21 (77.8%) were men. Log BNP remained stable during the pre-treatment period (p = 0.34) but decreased significantly during the on-treatment period (p < 0.001). The reduction in log BNP during the on-treatment period was significantly greater than during the pre-treatment period (mean difference −0.35, 95% confidence interval −0.44 to −0.11, p < 0.001). Concomitant reductions were observed in HbA1c, body weight, C-reactive protein, left atrial volume index, and left ventricular mass index. Changes in C-reactive protein levels were significantly correlated with those in log BNP (r = 0.46, p = 0.015). Conclusions: In patients with HFpEF and T2DM, three-month oral semaglutide therapy was associated with reductions in BNP, as well as improvements in glycemic control, systemic inflammation, left atrial volume index, and left ventricular mass index.