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LANDMARK Trial: A prospective, multinational, multicentre, open-label, randomised, noninferiority trial to compare safety and effectiveness of Meril*s Myval Transcatheter Heart Valve (THV) series vs. Contemporary Valves (Edwards* Sapien THV series and Medtronic*s Evolut THV series) in patients with severe symptomatic native aortic valve stenosis.

LANDMARK Trial: A prospective, multinational, multicentre, open-label, randomised, noninferiority trial to compare safety and effectiveness of Meril*s Myval Transcatheter Heart Valve (THV) series vs. Contemporary Valves (Edwards* Sapien THV series and Medtronic*s Evolut THV series) in patients with severe symptomatic native aortic valve stenosis. - Landmark

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
NL-OMON
Registry ID
NL-OMON56440
Enrollment
422
Registered
2020-03-05
Start date
2020-11-26
Completion date
Unknown
Last updated
2026-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Severe aortic stenosis Severe aortic stenosis

Interventions

1 group (384 patients) will be treated with the Myval transcatheter heartvalve. 1 group (384 patients) will be treated with the Edwards Sapien or Medtronic Evolut heartvalve. For the nested registry

Sponsors

Meril Life Sciences
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: As per local Heart Team assessment, patient is eligible for TAVI and the patient is suitable for implantation with all three study devices.

Exclusion criteria

Exclusion criteria: Any condition, which in the Investigator*s opinion, would preclude safe participation of patient in the study.

Design outcomes

Primary

MeasureTime frame
Primary study parameters/outcome of the study: It is the composite of following (at 30 days) VARC-3 defined criteria: - All-cause mortality - All stroke - Bleeding (Type 3 and 4) - Acute kidney injury (stage 2, 3 and 4) - Major vascular complications - Moderate or severe prosthetic valve regurgitation - Conduction system disturbances resulting in a new permanent pacemaker implantationPrimary study parameters/outcome of the study: It is the composite of following (at 1 year) VARC-3 defined criteria:Freedom from all-cause mortalityFreedom from all strokeFreedom from hospitalization for procedure- or valve-related causes 

Secondary

MeasureTime frame
Clinical efficacy endpoint  is the composite of following [at 1-year] (VARC-3 defined criteria): -  Freedom from all-cause mortality - Freedom from all stroke - Freedom from hospitalization for procedure- or valve-related causes - Freedom from SF-12 physical and mental score decline of > 2.5 points from baselineClinical efficacy endpoint  is the composite of following [at 3-year, 5-year] (VARC-3 defined criteria): -  Freedom from all-cause mortality - Freedom from all stroke - Freedom from hospitalization for procedure- or valve-related causes - Freedom from SF-12 physical and mental score decline of > 2.5 points from baseline 2- All-cause mortality (VARC-3 defined criteria) (till 10-year) 3- All stroke (VARC-3 defined criteria till 5-year 4. Acute Kidney Injury (AKI)( stage 2, 3 and 4) (VARC-3 defined criteria) ( till 1-year) 5. Bleeding (Type 3 and 4) (VARC-3 defined criteria) (till 5-year) 6. Moderate or severe prosthetic valve regurgitation (VARC-3 defined criteria) (10-year) 7. New permanent pacemaker implantation (VARC-3 defined criteria) (till 10-year) 8. Conduction disturbances and arrhythmias (VARC-3 defined criteria(till 5-year) 9. Technical success (VARC-3 defined criteria) [Time Frame: Post-procedure] 10 Device success (VARC-3 criteria) 11 Safety at 30 days (VARC-3 criteria) 12 Clinical efficacy at 30 days (VARC-2 criteria) 13. Valve related long-term clinical efficacy (VARC-3 defined criteria) (till 10 years) 14. Vascular and access related complications (VARC-3 defined criteria) (till 1-year) 15. Major vascular complications (VARC-3 defined criteria) (till 1-year) 16. Myocardial Infarction (VARC-3 defined criteria) (till 5-year) 17. Functional improvement from baseline as measured per - NYHA class - 6 minute walking test 18 - Echocardiographic parameters (till 10 years) 19- Bioprosthetic valve deterioration (VARC-3 defined criteria (5-year) 20. Patient-prosthesis mismatch (VARC-2 defined criteria) (till 1-ye

Countries

Croatia, France, Germany, Greece, Hungary, Italy, Netherlands, New Zealand, Norway, Poland, Portugal, Slovenia, Spain, Sweden, Switzerland, United Kingdom

Contacts

Public ContactPHJ Schelfhout

Clinical Research Assistance

paul.schelfhout@kpnmail.nl0651574024

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Jun 27, 2026