1. LANDMARK comparison of early outcomes of newer-generation Myval transcatheter heart valve series with contemporary valves (Sapien and Evolut) in real-world individuals with severe symptomatic native aortic stenosis: a randomised non-inferiority trial.
- Author
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Baumbach A, van Royen N, Amat-Santos IJ, Hudec M, Bunc M, Ijsselmuiden A, Laanmets P, Unic D, Merkely B, Hermanides RS, Ninios V, Protasiewicz M, Rensing BJWM, Martin PL, Feres F, De Sousa Almeida M, van Belle E, Linke A, Ielasi A, Montorfano M, Webster M, Toutouzas K, Teiger E, Bedogni F, Voskuil M, Pan M, Angerås O, Kim WK, Rothe J, Kristić I, Peral V, Garg S, Elzomor H, Tobe A, Morice MC, Onuma Y, Soliman O, and Serruys PW
- Subjects
- Aged, Aged, 80 and over, Female, Humans, Male, Aortic Valve surgery, Postoperative Complications epidemiology, Prospective Studies, Prosthesis Design, Severity of Illness Index, Treatment Outcome, Aortic Valve Stenosis surgery, Heart Valve Prosthesis, Transcatheter Aortic Valve Replacement methods
- Abstract
Background: Transcatheter aortic valve implantation is an established, guideline-endorsed treatment for severe aortic stenosis. Precise sizing of the balloon-expandable Myval transcatheter heart valve (THV) series with the aortic annulus is facilitated by increasing its diameter in 1·5 mm increments, compared with the usual 3 mm increments in valve size. The LANDMARK trial aimed to show non-inferiority of the Myval THV series compared with the contemporary THVs Sapien Series (Edwards Lifesciences, Irvine, CA, USA) or Evolut Series (Medtronic, Minneapolis, MN, USA)., Methods: In this prospective, multinational, randomised, open-label, non-inferiority trial across 31 hospitals in 16 countries (Germany, France, Sweden, the Netherlands, Italy, Spain, New Zealand, Portugal, Greece, Hungary, Poland, Slovakia, Slovenia, Croatia, Estonia, and Brazil), 768 participants with severe symptomatic native aortic stenosis were randomly assigned (1:1) to the Myval THV or a contemporary THV. Eligibility was primarily decided by the heart team in accordance with 2021 European Society of Cardiology guidelines. As per the criteria of the third Valve Academic Research Consortium, the primary endpoint at 30 days was a composite of all-cause mortality, all stroke, bleeding (types 3 and 4), acute kidney injury (stages 2-4), major vascular complications, moderate or severe prosthetic valve regurgitation, and conduction system disturbances resulting in a permanent pacemaker implantation. Non-inferiority of the study device was tested in the intention-to-treat population using a non-inferiority margin of 10·44% and assuming an event rate of 26·10%. This trial is registered with ClinicalTrials.gov, NCT04275726, and EudraCT, 2020-000137-40, and is closed to new participants., Findings: Between Jan 6, 2021, and Dec 5, 2023, 768 participants with severe symptomatic native aortic stenosis were randomly assigned, 384 to the Myval THV and 384 to a contemporary THV. 369 (48%) participants had their sex recorded as female, and 399 (52%) as male. The mean age of participants was 80·0 years (SD 5·7) for those treated with the Myval THV and 80·4 years (5·4) for those treated with a contemporary THV. Median Society of Thoracic Surgeons scores were the same in both groups (Myval 2·6% [IQR 1·7-4·0] vs contemporary 2·6% [1·7-4·0]). The primary endpoint showed non-inferiority of the Myval (25%) compared with contemporary THV (27%), with a risk difference of -2·3% (one-sided upper 95% CI 3·8, p
non-inferiority <0·0001). No significant difference was seen in individual components of the primary composite endpoint., Interpretation: In individuals with severe symptomatic native aortic stenosis, the Myval THV met its primary endpoint at 30 days., Funding: Meril Life Sciences., Competing Interests: Declaration of interests NvR reports grant funding and personal fees from Abbott; grants from Philips, Biotronik, and Medtronic; and personal fees from MicroPort, Bayer, and RainMed Medical outside the submitted work. IJA-S reports being a proctor for Medtronic, Boston Scientific, and Meril Life Sciences. AIj reports consulting fees from Meril Life Sciences, Medtronic, Angiocare, Keystone Heart, PulseCath, Salveo, Abbott, Philips, Fysicon, Cardiawave, Pi Medical, and Svelte. DU reports lecture and educational event fees from Medtronic; a lecture fee from and being a proctor for Meril Life Sciences; and being a member of the Medtronic EMEA surgical advisory board. RSH reports grant funding from Bayer; and speaker fees from Amgen, Novartis, and Abbott outside the submitted work. MW reports institutional research funding from Emboline, Meril Life Sciences, Edwards Lifesciences, and TransAortic Medical. MPa reports honoraria from Boston Scientific, Philips, and Abbott. OA reports research grants and lecture fees from and being a proctor for Abbott; and advisory board participation for and support for attending meetings from Meril Life Sciences. W-KK reports honoraria or consultancy fees from Abbott, Boston Scientific, Edwards Lifesciences, Meril Life Sciences, and Hi-D Imaging; and participation on an advisory board or data and safety monitoring board for Abbott and Boston Scientific. JR reports being a consultant with Medtronic and Qatma; being a proctor for Medtronic; and travel support for attending meetings from Meril Life Sciences, Edwards Lifesciences, Abbott, Medtronic, and Boston Scientific. AT reports a grant from the Fukuda Foundation for Medical Technology. SG reports honoraria or consultancy fees from Biosensors. PWS reports consultancy fees from SMT, Novartis, Meril Life Sciences, Xeltis, and Philips. All other authors declare no competing interests., (Copyright © 2024 Elsevier Ltd. All rights reserved, including those for text and data mining, AI training, and similar technologies.)- Published
- 2024
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