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  • Dapagliflozin action...

Dapagliflozin action on HFrEF not impacted by frailty: Data from DAPA-HF trial

Medha BaranwalWritten by Medha Baranwal Published On 2022-05-06T10:00:25+05:30  |  Updated On 2022-05-06T09:59:29+05:30
Dapagliflozin action on HFrEF not impacted by frailty: Data from DAPA-HF trial

UK: Findings from a post hoc analysis of the DAPA-HF trial suggests that the protective effects of dapagliflozin in patients having heart failure with reduced ejection fraction (HFrEF) is maintained regardless of frailty. The study appears in Annals of Internal Medicine. The study further reveals that the greatest benefit is derived by the most-frail patients, withe regards to outcomes...

UK: Findings from a post hoc analysis of the DAPA-HF trial suggests that the protective effects of dapagliflozin in patients having heart failure with reduced ejection fraction (HFrEF) is maintained regardless of frailty. The study appears in Annals of Internal Medicine. 

The study further reveals that the greatest benefit is derived by the most-frail patients, withe regards to outcomes like worsening heart failure, cardiovascular death, symptoms and quality of life. 

Previous studies have shown frailty to modify the risk-benefit profile of certain treatments, and frail patients may have reduced tolerance to treatments. Conaisering this, Jawad H. Butt, University of Glasgow, Glasgow, United Kingdom, and colleagues aimed to investigate the efficacy of dapagliflozin according to frailty status, using the Rockwood cumulative deficit approach, in DAPA-HF (Dapagliflozin and Prevention of Adverse Outcomes in Heart Failure).

The study was a post hoc analysis of a phase 3 randomized clinical trial conducted across 410 sites in 20 countries.

Patients with symptomatic heart failure (HF) with a left ventricular ejection fraction of 40% or less and elevated natriuretic peptide were included. They were randomized to addition of once-daily 10 mg of dapagliflozin or placebo to guideline-recommended therapy. Worsening HF or cardiovascular death was the primary outcome. 

The findings of the study were as follows:

  • Of the 4744 patients randomly assigned in DAPA-HF, a frailty index (FI) was calculable in 4742. In total, 2392 patients (50.4%) were in FI class 1 (FI ≤0.210; not frail), 1606 (33.9%) in FI class 2 (FI 0.211 to 0.310; more frail), and 744 (15.7%) in FI class 3 (FI ≥0.311; most frail). The median follow-up time was 18.2 months.
  • Dapagliflozin reduced the risk for worsening HF or cardiovascular death, regardless of FI class.
  • The differences in event rate per 100 person-years for dapagliflozin versus placebo from lowest to highest FI class were −3.5, −3.6, and −7.9.
  • Consistent benefits were observed for other clinical events and health status, but the absolute reductions were generally larger in the most frail patients.
  • Study drug discontinuation and serious adverse events were not more frequent with dapagliflozin than placebo, regardless of FI class.

The researchers conclude, "Dapagliflozin improved all outcomes examined, regardless of frailty status. However, the absolute reductions were larger in more frail patients."

The main limitation of the study was that the enrollment criteria precluded the inclusion of very high-risk patients. 

Reference:

Butt JH, Dewan P, Merkely B, Belohlávek J, Drożdż J, Kitakaze M, Inzucchi SE, Kosiborod MN, Martinez FA, Tereshchenko S, Ponikowski P, Bengtsson O, Lindholm D, Langkilde AM, Schou M, Sjöstrand M, Solomon SD, Sabatine MS, Chiang CE, Docherty KF, Jhund PS, Køber L, McMurray JJV. Efficacy and Safety of Dapagliflozin According to Frailty in Heart Failure With Reduced Ejection Fraction : A Post Hoc Analysis of the DAPA-HF Trial. Ann Intern Med. 2022 Apr 26. doi: 10.7326/M21-4776. Epub ahead of print. PMID: 35467935.

Annals of Internal Medicine dapagliflozin heart failure reduced ejection fraction frailty 
Source : Annals of Internal Medicine
Medha Baranwal
Medha Baranwal

    MSc. Biotechnology

    Medha Baranwal joined Medical Dialogues as an Editor in 2018 for Speciality Medical Dialogues. She covers several medical specialties including Cardiac Sciences, Dentistry, Diabetes and Endo, Diagnostics, ENT, Gastroenterology, Neurosciences, and Radiology. She has completed her Bachelors in Biomedical Sciences from DU and then pursued Masters in Biotechnology from Amity University. She has a working experience of 5 years in the field of medical research writing, scientific writing, content writing, and content management. She can be contacted at  editorial@medicaldialogues.in. Contact no. 011-43720751

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