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Dementia-related adverse events in PARADIGM-HF and other trials in heart failure with reduced ejection fraction.


ABSTRACT: Inhibition of neprilysin, an enzyme degrading natriuretic and other vasoactive peptides, is beneficial in heart failure with reduced ejection fraction (HFrEF), as shown in PARADIGM-HF which compared the angiotensin receptor-neprilysin inhibitor (ARNI) sacubitril/valsartan with enalapril. As neprilysin is also one of many enzymes clearing amyloid-? peptides from the brain, there is a theoretical concern about the long-term effects of sacubitril/valsartan on cognition. Therefore, we have examined dementia-related adverse effects (AEs) in PARADIGM-HF and placed these findings in the context of other recently conducted HFrEF trials.In PARADIGM-HF, patients with symptomatic HFrEF were randomized to sacubitril/valsartan 97/103?mg b.i.d. or enalapril 10?mg b.i.d. in a 1:1 ratio. We systematically searched AE reports, coded using the Medical Dictionary for Regulatory Activities (MedDRA), using Standardized MedDRA Queries (SMQs) with 'broad' and 'narrow' preferred terms related to dementia. In PARADIGM-HF, 8399 patients aged 18-96 years were randomized and followed for a median of 2.25?years (up to 4.3?years). The narrow SMQ search identified 27 dementia-related AEs: 15 (0.36%) on enalapril and 12 (0.29%) on sacubitril/valsartan [hazard ratio (HR) 0.73, 95% confidence interval (CI) 0.33-1.59]. The broad search identified 97 (2.30%) and 104 (2.48%) AEs (HR 1.01, 95% CI 0.75-1.37), respectively. The rates of dementia-related AEs in both treatment groups in PARADIGM-HF were similar to those in three other recent trials in HFrEF.We found no evidence that sacubitril/valsartan, compared with enalapril, increased dementia-related AEs, although longer follow-up may be necessary to detect such a signal and more sensitive tools are needed to detect lesser degrees of cognitive impairment. Further studies to address this question are warranted.

SUBMITTER: Cannon JA 

PROVIDER: S-EPMC5248626 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature

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Dementia-related adverse events in PARADIGM-HF and other trials in heart failure with reduced ejection fraction.

Cannon Jane A JA   Shen Li L   Jhund Pardeep S PS   Kristensen Søren L SL   Køber Lars L   Chen Fabian F   Gong Jianjian J   Lefkowitz Martin P MP   Rouleau Jean L JL   Shi Victor C VC   Swedberg Karl K   Zile Michael R MR   Solomon Scott D SD   Packer Milton M   McMurray John J V JJ  

European journal of heart failure 20161120 1


<h4>Aims</h4>Inhibition of neprilysin, an enzyme degrading natriuretic and other vasoactive peptides, is beneficial in heart failure with reduced ejection fraction (HFrEF), as shown in PARADIGM-HF which compared the angiotensin receptor-neprilysin inhibitor (ARNI) sacubitril/valsartan with enalapril. As neprilysin is also one of many enzymes clearing amyloid-β peptides from the brain, there is a theoretical concern about the long-term effects of sacubitril/valsartan on cognition. Therefore, we h  ...[more]

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