NCT04204915Recruiting
The Early Valve Replacement in Severe ASYmptomatic Aortic Stenosis Study
A Randomised Controlled Trial of Early Valve Replacement in Severe ASYmptomatic Aortic Stenosis
Source: ClinicalTrials.gov · Last updated 21 Jul 2026
Brief summary (registry, in English)
Aortic stenosis (AS) affects approximately 5% of individuals \>65 years old, with \~3% of people \>75 years having moderate to severe disease. The prevalence of AS is rising rapidly due to an ageing population and is projected to double in the next two decades. Increasingly clinicians face the dilemma of how to best manage this growing population of mainly elderly patients, many of whom are asymptomatic but have been identified as having severe AS, often as an incidental finding. Reduced aortic valve opening progresses over decades without any apparent symptoms because the heart compensates for the AS. Ultimately, compensatory mechanisms fail resulting in angina, syncope or heart failure. If these symptomatic patients with severe AS remain untreated, they have a dire prognosis. In this situation the only effective treatment is AVR, either surgically or using TAVI. Conversely, conventional teaching and clinical practice in cardiology has been that, in the absence of symptoms, the prognosis is usually excellent and, except in a few very specific circumstances, conservative management and regular review (expectant management) is recommended. This advice is reflected in current international guidelines but is based largely on historical precedent. There has never been a randomised controlled trial to address the relative benefits of early AVR versus expectant management in patients with severe asymptomatic AS. The relative benefits of a strategy of early AVR/TAVI versus expectant management in patients with asymptomatic severe AS are unclear. There is clinical equipoise but it remains one of the few areas of cardiovascular medicine where no randomised controlled trials (RCT) have been performed. The EASY-AS study will provide crucial data on the relative merits of these differing approaches to management, in terms of important patient orientated outcomes, conventional cardiovascular end-points and cost effectiveness.
- Status (registry)
- Recruiting
- Study type
- Interventional
- Enrollment
- 2104 (estimated)
- First submitted
- 17 Dec 2019
- Start date
- 10 Mar 2020
- Primary completion date
- 1 Apr 2031
- Lead sponsor
- University of Leicester
- Diseases
- Heart failure
- NCT number
- NCT04204915
What you commit to
- Study type: Interventional
- Planned participants: 2104
- From 10 Mar 2020 to the primary completion date, 1 Apr 2031
- 109 sites in 7 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Patient has previously undergone AVR or TAVI with restenosis
Other illness
- Additional severe valvular heart disease
- Other cardiac surgery planned pre-randomisation (eg CABG)
Lab values
- Left ventricular systolic dysfunction (LVEF \<50%)
Age
- Co-morbid condition that, in the opinion of the treating cardiologist, limits life expectancy to \<2 years
Other
- Symptoms related to AS
- Pregnancy
Who the study is looking for
- Age \>18 years
- Patient has severe asymptomatic AS, in line with current international guidelines, defined as either:
- Peak velocity ≥4m/s OR mean pressure gradient ≥40mmHg WITH aortic valve area ≤1.0cm2 OR ≤0.6cm2/m2 body surface area OR
- Peak velocity ≥4m/s OR mean pressure gradient ≥40mmHg WITH aortic valve area \>1.0 - ≤1.2cm2 OR \>0.6 - ≤0.7cm2/m2 body surface area AND high sex specific calcium score\* OR
- Peak Velocity ≥3.5m/s - 3.9m/s AND mean pressure gradient \<40 mmHg WITH aortic valve area ≤1.0cm2 OR ≤0.6cm2/m2 body surface area AND high sex specific calcium score\* \*Sex specific high calcium scores (Agatston units): \>1200 females; \>2000 males
- The responsible clinician feels that either ongoing surveillance or early AVR are appropriate.
- Regarded by the treating cardiologist to be suitable for AVR (surgical or TAVI) with an acceptable risk
- Willing to provide informed consent and be randomised to early AVR or expectant management
- An ability to understand one of the written languages that the study has provided written and visual materials in, or the availability of a translator to explain the study documentation
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (109)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Flinders Medical Centre Coordinator of this site? Confirm its status | Adelaide | Australia | Recruiting |
| Royal Adelaide Hospital Coordinator of this site? Confirm its status | Adelaide | Australia | Recruiting |
| Prince Charles Hospital Coordinator of this site? Confirm its status | Chermside | Australia | Recruiting |
| Monash Health Coordinator of this site? Confirm its status | Clayton | Australia | Recruiting |
| Townsville Hospital Coordinator of this site? Confirm its status | Douglas | Australia | Recruiting |
| Lyell McEwin Hospital Coordinator of this site? Confirm its status | Elizabeth Vale | Australia | Recruiting |
| Northern Hospital Coordinator of this site? Confirm its status | Epping | Australia | Recruiting |
| Canberra Hospital Coordinator of this site? Confirm its status | Garran | Australia | Recruiting |
| University Hospital Geelong Coordinator of this site? Confirm its status | Geelong | Australia | Recruiting |
| Royal Hobart Hospital Coordinator of this site? Confirm its status | Hobart | Australia | Recruiting |
| Nepean Hospital Coordinator of this site? Confirm its status | Kingswood | Australia | Recruiting |
| Liverpool Hospital Coordinator of this site? Confirm its status | Liverpool | Australia | Recruiting |
| John Hunter Hospital Coordinator of this site? Confirm its status | New Lambton Heights | Australia | Recruiting |
| Royal Perth Hospital Coordinator of this site? Confirm its status | Perth | Australia | Recruiting |
| Fiona Stanley Hospital Coordinator of this site? Confirm its status | Perth | Australia | Recruiting |
| The Gold Coast Hospital Coordinator of this site? Confirm its status | Southport | Australia | Recruiting |
| Royal North Shore Hospital Coordinator of this site? Confirm its status | St Leonards | Australia | Recruiting |
| Royal Darwin Hospital Coordinator of this site? Confirm its status | Tiwi | Australia | Recruiting |
| Westmead Hospital Coordinator of this site? Confirm its status | Westmead | Australia | Recruiting |
| Wollongong Hospital Coordinator of this site? Confirm its status | Wollongong | Australia | Recruiting |
| Sint-Jan Hospital Coordinator of this site? Confirm its status | Bruges | Belgium | Recruiting |
| Ziekenhuis Oost-Limburg Coordinator of this site? Confirm its status | Genk | Belgium | Recruiting |
| University Hospital of Brussels Coordinator of this site? Confirm its status | Jette | Belgium | Recruiting |
| Hospital Germans Trias Coordinator of this site? Confirm its status | Barcelona | Spain | Recruiting |
| University Hospital of Navarra Coordinator of this site? Confirm its status | Pamplona | Spain | Recruiting |
| Aberdeen Royal Infirmary Coordinator of this site? Confirm its status | Aberdeen | United Kingdom | Recruiting |
| Aintree University Hospital Coordinator of this site? Confirm its status | Aintree | United Kingdom | Recruiting |
| Wansbeck General Hospital Coordinator of this site? Confirm its status | Ashington | United Kingdom | Recruiting |
| University Hospital Ayr Coordinator of this site? Confirm its status | Ayr | United Kingdom | Recruiting |
| Barnsley Hospital NHS Foundation Trust Coordinator of this site? Confirm its status | Barnsley | United Kingdom | Recruiting |
| Basildon University Hospital Coordinator of this site? Confirm its status | Basildon | United Kingdom | Recruiting |
| Basingstoke and North Hampshire Hospital Coordinator of this site? Confirm its status | Basingstoke | United Kingdom | Recruiting |
| Queen Elizabeth Hospital Coordinator of this site? Confirm its status | Birmingham | United Kingdom | Recruiting |
| Blackpool Victoria Hospital Coordinator of this site? Confirm its status | Blackpool | United Kingdom | Recruiting |
| Glan Clwyd Hospital Coordinator of this site? Confirm its status | Bodelwyddan | United Kingdom | Recruiting |
| Royal Sussex County Hospital Coordinator of this site? Confirm its status | Brighton | United Kingdom | Recruiting |
| North Cumbria Integrated Care Coordinator of this site? Confirm its status | Carlisle | United Kingdom | Recruiting |
| Chesterfield Royal Hospital Coordinator of this site? Confirm its status | Chesterfield | United Kingdom | Recruiting |
| University Hospital Coventry & Warwickshire Coordinator of this site? Confirm its status | Coventry | United Kingdom | Recruiting |
| County Durham and Darlington NHS Foundation Trust Coordinator of this site? Confirm its status | Darlington | United Kingdom | Recruiting |
| Doncaster Royal Infirmary Coordinator of this site? Confirm its status | Doncaster | United Kingdom | Recruiting |
| Dorset County Hospital Coordinator of this site? Confirm its status | Dorchester | United Kingdom | Withdrawn |
| Russells Hall Hospital Coordinator of this site? Confirm its status | Dudley | United Kingdom | Recruiting |
| Ninewells Hospital Coordinator of this site? Confirm its status | Dundee | United Kingdom | Recruiting |
| University Hospital of North Durham Coordinator of this site? Confirm its status | Durham | United Kingdom | Recruiting |
| The Royal Infirmary of Edinburgh Coordinator of this site? Confirm its status | Edinburgh | United Kingdom | Recruiting |
| Royal Devon & Exeter Hospital Coordinator of this site? Confirm its status | Exeter | United Kingdom | Recruiting |
| Gateshead Health NHS Foundation Trust Coordinator of this site? Confirm its status | Gateshead | United Kingdom | Recruiting |
| Golden Jubilee National Hospital Coordinator of this site? Confirm its status | Glasgow | United Kingdom | Recruiting |
| Glasgow Royal Infirmary Coordinator of this site? Confirm its status | Glasgow | United Kingdom | Recruiting |
| Queen Elizabeth University Hospital Coordinator of this site? Confirm its status | Glasgow | United Kingdom | Recruiting |
| Gloucestershire Hospitals NHS Foundation Coordinator of this site? Confirm its status | Gloucester | United Kingdom | Recruiting |
| Wycombe Hospital Coordinator of this site? Confirm its status | High Wycombe | United Kingdom | Recruiting |
| Huddersfield Royal Infirmary Coordinator of this site? Confirm its status | Huddersfield | United Kingdom | Recruiting |
| Raigmore Hospital Coordinator of this site? Confirm its status | Inverness | United Kingdom | Recruiting |
| West Middlesex University Hospital Coordinator of this site? Confirm its status | Isleworth | United Kingdom | Recruiting |
| Airedale General Hospital Coordinator of this site? Confirm its status | Keighley | United Kingdom | Recruiting |
| Kettering General Hospital Coordinator of this site? Confirm its status | Kettering | United Kingdom | Recruiting |
| University Hospital Crosshouse Coordinator of this site? Confirm its status | Kilmarnock | United Kingdom | Recruiting |
| Leeds General Infirmary Coordinator of this site? Confirm its status | Leeds | United Kingdom | Recruiting |
| University Hospitals Leicester, Glenfield Coordinator of this site? Confirm its status | Leicester | United Kingdom | Recruiting |
| Lincoln County Hospital Coordinator of this site? Confirm its status | Lincoln | United Kingdom | Recruiting |
| Royal Liverpool Hospital Coordinator of this site? Confirm its status | Liverpool | United Kingdom | Recruiting |
| Liverpool Heart and Chest Hospital Coordinator of this site? Confirm its status | Liverpool | United Kingdom | Recruiting |
| Imperial College Healthcare NHS Trust Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| St. George's Hospital Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| Chelsea And Westminster Hospital Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| St. Bartholomew's Hospital Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| Cleveland Clinic London Hospital Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| St Thomas Hospital Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| University Hospital Lewisham Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| Maidstone & Tunbridge Wells Hospital Coordinator of this site? Confirm its status | Maidstone | United Kingdom | Recruiting |
| Wythenshawe Hospital Coordinator of this site? Confirm its status | Manchester | United Kingdom | Recruiting |
| North Manchester General Hospital Coordinator of this site? Confirm its status | Manchester | United Kingdom | Recruiting |
| The James Cook University Hospital Coordinator of this site? Confirm its status | Middlesbrough | United Kingdom | Recruiting |
| Freeman Hospital Coordinator of this site? Confirm its status | Newcastle upon Tyne | United Kingdom | Recruiting |
| Norfolk and Norwich University Hospital Coordinator of this site? Confirm its status | Norwich | United Kingdom | Recruiting |
| Queens Medical Centre Coordinator of this site? Confirm its status | Nottingham | United Kingdom | Recruiting |
| Kings Mill Hospital Coordinator of this site? Confirm its status | Nottingham | United Kingdom | Recruiting |
| George Eliot Hospital Coordinator of this site? Confirm its status | Nuneaton | United Kingdom | Recruiting |
| Royal Alexandra Hospital Coordinator of this site? Confirm its status | Paisley | United Kingdom | Recruiting |
| Derriford Hospital Coordinator of this site? Confirm its status | Plymouth | United Kingdom | Recruiting |
| Poole Hospital Coordinator of this site? Confirm its status | Poole | United Kingdom | Recruiting |
| Queen Alexandra Hospital Coordinator of this site? Confirm its status | Portsmouth | United Kingdom | Recruiting |
| Scunthorpe General Hospital Coordinator of this site? Confirm its status | Scunthorpe | United Kingdom | Recruiting |
| Northern General Hospital Coordinator of this site? Confirm its status | Sheffield | United Kingdom | Recruiting |
| Southampton General Hospital Coordinator of this site? Confirm its status | Southampton | United Kingdom | Recruiting |
| Forth Valley Royal Hospital Coordinator of this site? Confirm its status | Stirling | United Kingdom | Recruiting |
| Stepping Hill Hospital Coordinator of this site? Confirm its status | Stockport | United Kingdom | Recruiting |
| North Tees and Hartlepool NHS Foundation Trust Coordinator of this site? Confirm its status | Stockton-on-Tees | United Kingdom | Recruiting |
| South Tyneside and Sunderland NHS Foundation Trust Coordinator of this site? Confirm its status | Sunderland | United Kingdom | Recruiting |
| Morriston Hospital Coordinator of this site? Confirm its status | Swansea | United Kingdom | Recruiting |
| Musgrove Park Hospital Coordinator of this site? Confirm its status | Taunton | United Kingdom | Recruiting |
| Torbay Hospital Coordinator of this site? Confirm its status | Torquay | United Kingdom | Recruiting |
| Royal Cornwall Hospital Coordinator of this site? Confirm its status | Truro | United Kingdom | Recruiting |
| Pinderfields Hospital Coordinator of this site? Confirm its status | Wakefield | United Kingdom | Recruiting |
| Walsall Manor Hospital Coordinator of this site? Confirm its status | Walsall | United Kingdom | Recruiting |
| South Warwickshire University NHS Foundation Trust Coordinator of this site? Confirm its status | Warwick | United Kingdom | Recruiting |
| Watford General Hospital Coordinator of this site? Confirm its status | Watford | United Kingdom | Recruiting |
| Sandwell General Hospital Coordinator of this site? Confirm its status | West Bromwich | United Kingdom | Recruiting |
| New Cross Hospital Coordinator of this site? Confirm its status | Wolverhampton | United Kingdom | Recruiting |
| Worcester Acute Hospitals NHS FT Coordinator of this site? Confirm its status | Worcester | United Kingdom | Recruiting |
| Yeovil District Hospital Coordinator of this site? Confirm its status | Yeovil | United Kingdom | Withdrawn |
| Frisius Medical Center Coordinator of this site? Confirm its status | Leeuwarden | Netherlands | Recruiting |
| Radboud University Medical Center Coordinator of this site? Confirm its status | Nijmegen | Netherlands | Recruiting |
| Auckland City Hospital Coordinator of this site? Confirm its status | Auckland | New Zealand | Recruiting |
| Christchurch Hospital Coordinator of this site? Confirm its status | Christchurch | New Zealand | Recruiting |
| Dunedin Hospital Coordinator of this site? Confirm its status | Dunedin | New Zealand | Recruiting |
| Institute of Cardiovascular Diseases Coordinator of this site? Confirm its status | Kamenitz | Serbia | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.