This is to our knowledge, the first study that comprehensively investigated the genetics of DCM in a large-scale cohort and across a broad gene panel of the known DCM genes. Our results underline the high analytical quality and feasibility of Next-Generation Sequencing in clinical genetic diagnostics and provide a sound database of the genetic causes of DCM.

Aims The EMPERIAL (Effect of EMPagliflozin on ExeRcise ability and HF symptoms In patients with chronic heArt faiLure) trials evaluated the effects of empagliflozin on exercise ability and patient-reported outcomes in heart failure (HF) with reduced and preserved ejection fraction (EF), with and without type 2 diabetes (T2D), reporting, for the first time, the effects of sodium-glucose co-transporter-2 inhibition in HF with preserved EF (HFpEF). Methods and results HF patients with reduced EF (HFrEF) (≤40%,N = 312, EMPERIAL-Reduced) or preserved EF (>40%,N = 315, EMPERIAL-Preserved), with and without T2D, were randomized to empagliflozin 10 mg or placebo for 12 weeks. The primary endpoint was 6-minute walk test distance (6MWTD) change to Week 12. Key secondary endpoints included Kansas City Cardiomyopathy Questionnaire Total Symptom Score (KCCQ-TSS) and Chronic Heart Failure Questionnaire Self-Administered Standardized format (CHQ-SAS) dyspnoea score. 6MWTD median (95% confidence interval) differences, empagliflozin vs. placebo, at Week 12 were −4.0 m (−16.0, 6.0;P = 0.42) and 4.0 m (−5.0, 13.0;P = 0.37) in EMPERIAL-Reduced and EMPERIAL-Preserved, respectively. As the primary endpoint was non-significant, all secondary endpoints were considered exploratory. Changes in KCCQ-TSS and CHQ-SAS dyspnoea score were non-significant. Improvements with empagliflozin in exploratory pre-specified analyses of KCCQ-TSS responder rates, congestion score, and diuretic use in EMPERIAL-Reduced are hypothesis generating. Empagliflozin adverse events were consistent with those previously reported. Conclusion The primary outcome for both trials was neutral. Empagliflozin was well tolerated in HF patients, with and without T2D, with a safety profile consistent with that previously reported in T2D. Hypothesis-generating improvements in exploratory analyses of secondary endpoints with empagliflozin in HFrEF were observed.

Background: Patients with heart failure and preserved ejection fraction (HFpEF) have significant impairment in health-related quality of life (HRQoL). In EMPEROR-Preserved, we evaluated the efficacy of empagliflozin on HRQoL in patients with HFpEF and whether the clinical benefit observed with empagliflozin varies according to baseline health status. Methods: HRQoL was measured using the Kansas City Cardiomyopathy Questionnaire (KCCQ) at baseline, 12, 32 and 52 weeks. Patients were divided by baseline KCCQ Clinical Summary Score (CSS) tertiles and the effect of empagliflozin on outcomes were examined. The effect of empagliflozin on KCCQ-CSS, Total Symptom Score (TSS) and Overall Summary Score (OSS) were evaluated. Responder analyses were performed to compare the odds of improvement and deterioration in KCCQ related to treatment with empagliflozin. Results: The effect of empagliflozin on reducing the risk of time to cardiovascular death or HF hospitalization was consistent across baseline KCCQ-CSS tertiles (HR 0.83 [0.69-1.00], HR 0.70 [0.55-0.88] and HR 0.82 [0.62-1.08] for scores <62.5, 62.5-83.3 and ≥83.3, respectively; P trend=0.77). Similar results were seen for total HF hospitalizations. Patients treated with empagliflozin had significant improvement in KCCQ-CSS versus placebo (+1.03, +1.24 and +1.50 at 12, 32 and 52 weeks, respectively P<0.01); similar results were seen for TSS and OSS. At 12 weeks, patients on empagliflozin had higher odds of improvement ≥5 points (OR 1.23; 95%CI 1.10, 1.37), ≥10 points (1.15; 95%CI 1.03, 1.27), and ≥15 points (1.13; 95%CI 1.02, 1.26) and lower odds of deterioration ≥5 points in KCCQ-CSS (0.85; 95%CI 0.75, 0.97). A similar pattern was seen at 32 and 52 weeks, and results were consistent for TSS and OSS. Conclusions: In patients with HFpEF, empagliflozin reduced the risk for major HF outcomes across the range of baseline KCCQ scores. Empagliflozin improved HRQoL, an effect that appeared early and was sustained for at least one year.