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Transcatheter Mitral Valve Replacement in Patients With Severe Symptomatic Mitral Regurgitation - APOLLO-EU Trial

Sponsor: Medtronic Cardiovascular

NCT ID: NCT05496998

View on ClinicalTrials.gov ↗

At a glance

What the study gets you
Access to the study treatment being tested
Type of study
Interventional (receives a drug or procedure)
Time in hospital
In-person visits at study sites — visit count not specified by the sponsor
Drug or intervention
Medtronic Intrepid™ TMVR TF System (device)
How long the study runs
Study runs about 190 months (dates as stated)
About the drug or intervention
Medtronic Intrepid™ TMVR TF System — device: Patients with moderate-to-severe or severe symptomatic mitral regurgitation, or moderate symptomatic mitral regurgitation combined with mitral stenosis in the presence of MAC will have a Transcatheter Mitral Valve Replacement with the Medtronic Intrepid™ TMVR Transfemoral System
Patient visit burden
Not specified by the sponsor

In plain English

This study, called the APOLLO-EU trial, is looking at a treatment called transcatheter mitral valve replacement (TMVR) for people with moderate-to-severe or severe symptomatic mitral regurgitation. Mitral regurgitation means the valve between the two left chambers of the heart does not close properly, letting blood leak backwards. The study is sponsored by Medtronic Cardiovascular.

Who can take part

  • Has moderate-to-severe or severe symptomatic mitral regurgitation, or moderate symptomatic mitral regurgitation combined with mitral stenosis and mitral annular calcification (calcium build-up around the valve)
  • A heart team experienced in mitral valve treatments agrees the patient is not suitable for approved transcatheter repair or conventional mitral valve surgery
  • The patient and their doctor agree the patient will return for all follow-up visits after the procedure
  • The patient meets the legal minimum age to give informed consent where they live
  • The patient's body structure is suitable for the Medtronic Intrepid TMVR TF System

Who may not be able to

  • Life expectancy of less than 24 months
  • Currently has a surgically implanted mitral valve
  • Has had a previous transcatheter mitral valve procedure with a device still in place
  • Has body structure issues that make the procedure unsuitable
  • Has severe calcium build-up around the mitral valve (mitral annular calcification) that makes treatment impossible
  • Has aortic valve disease needing treatment, or had aortic valve treatment within 90 days of joining the study
  • Has a pumping strength of the heart's main chamber (left ventricular ejection fraction, LVEF) below 25% (those between 25% and under 30% will be reviewed by the Screening Committee)
  • Has a left ventricle that is too wide (left ventricular end diastolic diameter over 75mm)
  • Needs emergency or urgent surgery
  • Is unstable blood-flow-wise (haemodynamic instability)
  • Has a history of bleeding disorders or blood clotting problems
  • Has end-stage kidney disease
  • Has liver failure
  • Is frail

What taking part involves

  • • Not stated — ask the trial team

Time commitment: Not stated in full — patients and their doctors agree to return for all required follow-up visits after the procedure; ask the trial team about how many visits and how long the study lasts.

Plain-English summary (AI-generated) from registry data. Not eligibility advice — only the trial team can confirm whether you can take part. Use the eligibility checker to see how your health profile matches this trial.

Type of study
Testing a treatment
Ages
18 Years and over
Who
All
Number of participants
400
Started
2023-02-07
Last checked
2026-07

Plain English Summary

What is this study?

  • • Testing a new treatment for mitral regurgitation
  • • NA - 400 participants
  • • Evaluate the safety and efficacy of Medtronic Intrepid™ TMVR TF System in patients with moderate-to-severe or severe symptomatic mitral regurgitation, or moderate symptomatic mitral regurgitation combined with mitral stenosis in the presence of MAC who, by agreement of the local site multidisciplinary heart team experienced in mitral valve therapies, are unsuitable for treatment with approved transcatheter repair or surgical mitral valve intervention

Who can take part?

  • • Ages 18 Years and over
  • • Diagnosed with mitral regurgitation

Where?

  • • Brighton - University Hospitals Sussex NHS Foundation Trust
  • • Leeds - Leeds General Infirmary
  • • London - Guys & St Thomas NHS Foundation Trust - St Thomas Hospital London
  • • London - Royal Brompton Hospital

This is a simplified summary. Always discuss with your doctor before making any decisions.

About This Trial

Evaluate the safety and efficacy of Medtronic Intrepid™ TMVR TF System in patients with moderate-to-severe or severe symptomatic mitral regurgitation, or moderate symptomatic mitral regurgitation combined with mitral stenosis in the presence of MAC who, by agreement of the local site multidisciplinary heart team experienced in mitral valve therapies, are unsuitable for treatment with approved transcatheter repair or surgical mitral valve intervention.

More detail

Prospective, single-arm, multi-center, interventional, pre-market trial

Mitral Regurgitation

How this trial compares with your answers

Answer 2 more questions to improve match

What we know so far

Condition· Matched your search
Age· Tell us your age for better matching
Gender· Tell us your sex for better matching

Still need:

  • • Tell us your age for better matching
  • • Tell us your sex for better matching

Preliminary match based on your answers. Full eligibility requires on-site assessment including medical history, physical exam, and lab tests. This does not guarantee enrolment.

Eligibility at a Glance

Key info

  • Age: 18 Years and over
  • Who can join: All genders

Treatment history

Treatments you must have had:

  • ✓ post-procedure follow-up visits

What the study is looking for

  • ✓Local site multidisciplinary heart team experienced in mitral valve therapies agrees that patient is unsuitable for...
  • ✓Subject and the treating physician agree that the subject will return for all required post-procedure follow-up visits
  • ✓Subject meets the legal minimum age to provide agreement to take part based on local regulatory requirements
  • ✓Subjects anatomically suitable for the Medtronic Intrepid™ TMVR TF System

Who cannot take part

  • ✗Estimated life expectancy of less than 24 months
  • ✗Currently surgically implanted mitral valve
  • ✗Prior transcatheter mitral valve procedure with device currently implanted
  • ✗Anatomic contraindications
  • ✗Anatomically prohibitive mitral annular calcification (MAC)
See the full criteria
Inclusion Criteria: * Subject has moderate-to-severe or severe symptomatic mitral regurgitation as defined by the American Society of Echocardiography 2017 Guidelines and Standards - Recommendations for Non-invasive Evaluation of Native Valvular Regurgitation, or subject has moderate symptomatic mitral regurgitation combined with mitral stenosis with the presence of MAC * Local site multidisciplinary heart team experienced in mitral valve therapies agrees that patient is unsuitable for treatment with approved transcatheter repair or conventional mitral valve surgery * Subject and the treating physician agree that the subject will return for all required post-procedure follow-up visits * Subject meets the legal minimum age to provide informed consent based on local regulatory requirements * Subjects anatomically suitable for the Medtronic Intrepid™ TMVR TF System Exclusion Criteria: * Estimated life expectancy of less than 24 months * Currently surgically implanted mitral valve * Prior transcatheter mitral valve procedure with device currently implanted * Anatomic contraindications * Anatomically prohibitive mitral annular calcification (MAC) * Aortic valve disease requiring intervention or previous intervention within 90 days of enrollment * LVEF \< 25% (measured by resting transthoracic echocardiogram), patients with LVEF 25 - \<30% will be further evaluated by the Screening Committee for approval (Right Ventricular Dysfunction, pulmonary hypertension, and left ventricular function) * Left ventricular end diastolic diameter (LVEDD) \> 75mm * Need for emergent or urgent surgery * Hemodynamic instability * History of bleeding diathesis or coagulopathy * End stage renal disease * Liver failure * Frailty

Where Is This Study? (4 UK sites)

University Hospitals Sussex NHS Foundation Trust

Brighton BN2 5BE, United Kingdom

Recruiting
Site contact (verified)
David Hildick-Smith, Prof.Principal Investigator

Leeds General Infirmary

Leeds LS1 3EX, United Kingdom

Recruiting
Site contact (verified)
Daniel Blackman, Prof.Principal Investigator

Guys & St Thomas NHS Foundation Trust - St Thomas Hospital London

London SE1 7EH, United Kingdom

Recruiting
Site contact (verified)
Simon Redwood, Prof.Principal Investigator

Royal Brompton Hospital

London SW3 6NP, United Kingdom

Recruiting
Site contact (verified)
Alison Duncan, Dr.Principal Investigator

How to Get in Touch

Hanne Gonnissen, PhD

Sponsor contact

CONTACT

+31 (0)43 356 6566 rs.apolloeurope@medtronic.com
Data sourced from ClinicalTrials.gov · Last verified: 2026-07