Vericiguat for patients with heart failure and reduced ejection fraction across the risk spectrum: an individual participant data analysis of the VICTORIA and VICTOR trials

BACKGROUND: Following completion of the VICTORIA trial, vericiguat was approved for the treatment of worsening heart failure with reduced ejection fraction (HFrEF) and received a class IIb recommendation in European and North American guidelines. The subsequent VICTOR trial evaluated the use of vericiguat in patients with HFrEF and no recent worsening. We aimed to assess the effect of vericiguat on clinical endpoints through pooled analyses of patient-level data from the VICTORIA and VICTOR trials. METHODS: This prespecified, pooled individual participant-level analysis was conducted on data from two trials: VICTORIA, which was active from Sept 25, 2016, to Sept 2, 2019 in 42 countries, and VICTOR, which was active from Nov 2, 2021, to Feb 5, 2025 in 36 countries. The VICTORIA trial enrolled adult (aged ≥18 years) participants with HFrEF with recent worsening (defined as either hospitalisation for heart failure within the previous 6 months or outpatient use of intravenous diuretics within the previous 3 months) and increased NT-proBNP concentrations; the VICTOR trial had similar eligibility criteria but participants had no recent worsening of heart failure. Participants in both trials received contemporary background guideline-directed heart failure therapy as appropriate. The primary endpoint was a composite endpoint of cardiovascular death or hospitalisation for heart failure (also assessed individually). This study is registered with PROSPERO, CRD420251065636. FINDINGS: Data from 11 155 patients (5050 in the VICTORIA trial and 6105 in the VICTOR trial) were included in the pooled analysis. The primary endpoint of cardiovascular death or hospitalisation for heart failure occurred in 1446 (25·9%) of 5579 patients in the vericiguat group and 1556 (27·9%) of 5576 patients in the placebo group (hazard ratio [HR] 0·91 [95% CI 0·85-0·98]; p=0·0088), with similar reductions in its individual components of cardiovascular death (0·89 [0·80-0·98]; p=0·020) and hospitalisation for heart failure (0·92 [0·84-1·00]; p=0·043) as first events. INTERPRETATION: Vericiguat reduced the risk of hospitalisation for heart failure and cardiovascular death in patients with HFrEF across a broad range of clinical severity, including those receiving contemporary guideline-directed medical therapy. Vericiguat might be suitable as an additional treatment option for selected patients with HFrEF. FUNDING: Merck Sharp & Dohme (a subsidiary of Merck) and Bayer.