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Bardan S, Kvaslerud AB, Andresen K, Kløve SF, Edvardsen T, Gullestad L, Broch K. Intravenous ferric derisomaltose in iron-deficient patients undergoing transcatheter aortic valve implantation due to severe aortic stenosis: study protocol of the randomised controlled IIISAS trial. BMJ Open 2022; 12:e059546. [PMID: 36691165 PMCID: PMC9442485 DOI: 10.1136/bmjopen-2021-059546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 07/13/2022] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Iron deficiency is a prevalent comorbidity in patients with severe aortic stenosis and may be associated with procedural and clinical outcomes after transcatheter aortic valve implantation (TAVI). In the Intravenous Iron Supplement for Iron Deficiency in Patients with Severe Aortic Stenosis (IIISAS) trial, we aim to examine whether a single administration of ferric derisomaltose can improve physical capacity after TAVI. METHODS AND ANALYSIS This randomised, double-blind, placebo-controlled trial aims to enrol 150 patients with iron deficiency who are scheduled for TAVI due to severe aortic stenosis. The study drug and matching placebo are administered approximately 3 months prior to TAVI, and the patients are followed for 3 months after TAVI. Inclusion criteria are iron deficiency, defined as serum ferritin<100 µg/L or ferritin between 100 and 300 µg/L in combination with a transferrin saturation<20% and written informed consent. Exclusion criteria include haemoglobin<10 g/dL, red blood cell disorders, end-stage kidney failure, intolerance to ferric derisomaltose, and ongoing infections. The primary endpoint is the baseline-adjusted distance walked on a 6 min walk test (6MWT) 3 months after TAVI. Secondary end points include quality of life, New York Heart Association functional class (NYHA functional class), and skeletal muscle strength. ETHICS AND DISSEMINATION Ethical approval was obtained from the Regional Committee for Medical and Health Research of South-Eastern Norway and The Norwegian Medicines Agency. Enrolment has begun, and results are expected in 2022. The results of the IIISAS trial will be disseminated by presentations at international and national conferences and by publications in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT04206228.
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Affiliation(s)
- Sara Bardan
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Anette Borger Kvaslerud
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
- K.G. Jebsen Cardiac Research Center and Center for Heart Failure Research, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kristoffer Andresen
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Sophie Foss Kløve
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Thor Edvardsen
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Lars Gullestad
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
- K.G. Jebsen Cardiac Research Center and Center for Heart Failure Research, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kaspar Broch
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
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Kvaslerud AB, Bardan S, Andresen K, Kløve SF, Fagerland MW, Edvardsen T, Gullestad L, Broch K. Intravenous iron supplement for iron deficiency in patients with severe aortic stenosis scheduled for TAVI Results of the IIISAS randomised trial. Eur J Heart Fail 2022; 24:1269-1279. [PMID: 35579454 PMCID: PMC9544901 DOI: 10.1002/ejhf.2557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/11/2022] [Accepted: 05/14/2022] [Indexed: 11/12/2022] Open
Abstract
Aims The aim of this trial was to evaluate whether intravenous iron could provide benefit beyond transcatheter aortic valve implantation (TAVI) in iron‐deficient patients with severe aortic stenosis. Methods and results In this randomised, placebo‐controlled, double‐blind, single‐centre trial, we enrolled patients with severe aortic stenosis and iron deficiency (defined as ferritin <100 µg/L, or 100–299 µg/L with a transferrin saturation <20%) who were evaluated for TAVI. Patients were randomly assigned (1:1) to receive intravenous ferric derisomaltose or placebo ∼3 months before TAVI. The primary endpoint was the between‐group, baseline‐adjusted 6‐min walk distance measured 3 months after TAVI. Secondary outcomes included quality of life, iron stores, hand grip strength, New York Heart Association (NYHA) class, and safety. Between January 2020 and September 2021, we randomised 74 patients to ferric derisomaltose and 75 patients to placebo. The modified intention‐to‐treat population comprised the 104 patients who completed the 6‐min walk test at baseline and 3 months after successful TAVI. Iron stores were restored in 76% of the patients allocated to iron and 13% of the patients allocated to placebo (p < 0.001). There was no difference in the baseline‐adjusted 6‐min walk distance between the two treatment arms (p = 0.82). The number of serious adverse events, quality of life, hand grip strength, and NYHA class did not differ between the treatment arms. Conclusion Treatment with intravenous iron did not provide clinical benefit beyond TAVI in iron‐deficient patients with severe aortic stenosis. Clinical Trial Registration: ClinicalTrials.gov NCT04206228.
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Affiliation(s)
- Anette B Kvaslerud
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway.,KG Jebsen Center for Cardiac Research and Center for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Sara Bardan
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kristoffer Andresen
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Sophie Foss Kløve
- Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Morten Wang Fagerland
- Oslo Centre for Biostatistics and Epidemiology, Research Support Services, Oslo University Hospital, Oslo, Norway
| | - Thor Edvardsen
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Lars Gullestad
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway.,KG Jebsen Center for Cardiac Research and Center for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Kaspar Broch
- Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Cardiology, Rikshospitalet, Oslo University Hospital, Oslo, Norway.,KG Jebsen Center for Cardiac Research and Center for Heart Failure Research, University of Oslo, Oslo, Norway
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