NCT05102019ClinicalTrials.gov
Efficacy of the COronary SInus Reducer in Patients With Refractory Angina II
In brief
To demonstrate the safety and effectiveness of the Shockwave Reducer for treatment of patients with refractory angina pectoris treated with maximally tolerated guideline-directed medical therapy who demonstrate objective evidence of reversible myocardial ischemia in the distribution of the left coronary…
Interventional380 participants sought96 sites3 countries
Categories
Registered in 1 registry
- ClinicalTrials.govNCT05102019Open this record at ClinicalTrials.govSynced 4 weeks ago
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How this study is set up
The points below are drawn from the public registry record for this study. Each one cites the field or sentence it came from. A dash (—) means the record does not state something — not that it is missing or wrong. Many well-run studies, especially small ones, leave some of these blank.
- Present: Registered before enrolment beganFirst posted 2021-11-01; recorded start 2022-01-04
- Present: Has a defined primary outcomeA primary outcome measure is listed in the record
- Present: The primary outcome states a time frameThe primary outcome measure records a time frame
- Present: Participants are randomly assignedAllocation is recorded as randomised
- Present: Has a comparison groupThe record lists a placebo or comparator arm, or more than one study arm
- Present: Uses blinding (masking)A masking level is recorded in the record
- Not stated: An ethics committee is not stated in the registry recordThis registry's ingested record has no ethics-committee field
- Not stated: Regulatory oversight (such as an IND or IDE) is not stated in the registry recordThis registry's ingested record has no regulatory-authorisation field
- Not stated: A data monitoring committee is not stated in the registry recordThis registry's ingested record has no data-monitoring-committee fieldA data monitoring committee is not required for many smaller studies, and its absence here is not unusual.
- Present: No cost to participants is mentioned in the recordChecked the summary, description and eligibility text; no cost-to-participant phrase found
- Present: Sponsor has 6 other studies in this databaseCounted from the lead sponsor named in the record (Shockwave Medical, Inc.)
- Present: Sponsor has posted results for at least one studyBased on the sponsor’s studies in this database
- The record lists 1 condition.
- Lead sponsor type recorded as: industry.
Trial stature
Three independent measures of this study, described from its registry record — not a recommendation about it. A rigorous study by investigators nobody has heard of is better evidence than a weak study led by a famous one. How these are scored.
A strong methodological design for a study of this type, judged from its ClinicalTrials.gov record.
How this score is built
- Randomised allocation20/20
Participants are randomly allocated between arms
- Blinding13/20
Double-blind
- Control arm13/15
Placebo / sham control arm
- Primary-outcome specificity10/10
Named primary outcome with a defined time frame
- Endpoint type3/10
Surrogate or intermediate endpoint (conservative default)
- Multi-centre8/8
Multi-centre: 95 sites
- Data monitoring committee7/7
A data monitoring committee is in place
- Prospective registration5/5
Registered before the study start date
- Protocol / SAP posted0/5
No protocol or SAP posted to the registry
A medium-sized study, international in scope: 380 participants (target), run at 96 sites, across 3 countries.
How this score is built
- Enrolment25/40
380 participants (target)
- Site count22/25
95 sites
- Country count7/15
3 countries
- Planned duration10/10
Planned over about 122 months
- Sponsor scale3/10
Shockwave Medical, Inc. has led 7 trials in our corpus
We have no verifiable track record for the investigator named on this trial. That is common for early-career investigators and for records held outside ClinicalTrials.gov — it is not a negative signal.
How this score is built
- Investigator standing0/100
No investigator recorded in the registry for this trial
These describe the registry record only, and today we hold ClinicalTrials.gov data. Absent fields lower a score, and absence often reflects registration practice rather than study quality. A high-stature trial is not necessarily safer or a better choice for you — enrolling in a large definitive trial can mean a higher chance of receiving placebo, while a small early-phase study may be the only route to a new therapy.
Summary
To demonstrate the safety and effectiveness of the Shockwave Reducer for treatment of patients with refractory angina pectoris treated with maximally tolerated guideline-directed medical therapy who demonstrate objective evidence of reversible myocardial ischemia in the distribution of the left coronary artery and who are deemed unsuitable for revascularization. A non-randomized single-arm registry will further assess the safety and effectiveness of the Shockwave Reducer in selected subjects with reversible myocardial ischemia in the distribution of the right coronary artery and who are deemed unsuitable for revascularization, subjects without documented obstructive coronary disease and abnormal coronary flow reserve (ANOCA), and subjects who cannot complete an exercise tolerance test due to lower limb amputation (above the ankle) or other physiologic condition with documented chronic mobility or balance issues that require the use of a walking aid.
Conditions
- Refractory Angina
Eligibility
| Sex | All |
|---|---|
| Ages | 18 Years – No maximum |
| Healthy volunteers | No |
Eligibility as written in the registry
Eligibility in plain statements
This record's criteria have not been broken into separate statements yet. The registry text above is complete and is the authoritative version.
Study design
| Study type | Interventional |
|---|---|
| Phase | Not applicable |
| Allocation | Randomised |
| Intervention model | PARALLEL |
| Primary purpose | TREATMENT |
| Masking | DOUBLE (2) |
| Enrolment | 380 participants sought |
Sponsor and collaborators
- Shockwave Medical, Inc. Sponsor
Arms and interventions
- Arm 1 (treatment arm):Implantation of the Reducer deviceEXPERIMENTAL
- Arm 2 (sham-control arm): Control (no device implantation)SHAM_COMPARATOR
- Arm 3 (unblinded, non-randomized): Single Arm RegistryOTHER
Interventions
- Device Arm 1: treatment with Shockwave Reducer
Shockwave reducer is an implantable device being evaluated for the alleviation of refractory angina symptoms
- Other Arm 2 (control): Implantation procedure with no device implanted
No device is implanted
- Device Arm 3 (unblinded, non-randomized): Single arm registry
Shockwave Reducer is an implantable device being evaluated for the alleviation of refractory angina symptoms
Outcome measures
Primary outcome
Co-Primary Effectiveness Endpoints
Change in total exercise duration in a modified Bruce treadmill exercise tolerance testing evaluation in the Treatment arm compared to Sham-control arm. Change in SAQ clinical summary score assessed at 6 months post procedure compared to baseline in the Treatment arm compared to the Sham-control arm.
Time frame 6 months
Primary outcome
Primary Safety Endpoints
The rate of occurrence of a composite of death, myocardial infarction (MI), pericardial effusion requiring surgical or percutaneous intervention, device embolization, or BARC 3 or 5 bleeding evaluation in the Treatment arm compared to the Sham-control arm.
Time frame 6 months
Secondary outcome
Canadian Cardiovascular Society (CCS) Angina Score
Improvement by greater than or equal to 1 CCS angina grade. The CCS grading system for angina is a clinical tool used by doctors to assess the degree of severity of a patient's angina. Possible scores range from Class 0 (asymptomatic angina) to Class IV (angina at rest).
Time frame 6 months
Secondary outcome
Canadian Cardiovascular Society (CCS) Angina Score
Improvement by greater than or equal to 2 CCS angina grades. The CCS grading system for angina is a clinical tool used by doctors to assess the degree of severity of a patient's angina. Possible scores range from Class 0 (asymptomatic angina) to Class IV (angina at rest).
Time frame 6 months
Other outcome
Canadian Cardiovascular Society (CCS) Angina Score
Improvement by greater than or equal to 1 and greater than or equal to 2 CCS angina grades compared to baseline. The CCS grading system for angina is a clinical tool used by doctors to assess the degree of severity of a patient's angina. Possible scores range from Class 0 (asymptomatic angina) to Class IV (angina at rest).
Time frame 12 months, 2 years, 3 years, 4 years, and 5 years
Other outcome
Angina Burden
Angina frequency and burden compared to baseline
Time frame 6 and 12 months
Other outcome
Activity
Measure of activity assessed by actigraphy compared to baseline
Time frame 6 and 12 months
Other outcome
Exercise Tolerance Testing
Change in ETT parameters compared to baseline
Time frame 6 and 12 months
Other outcome
Exercise Tolerance Testing
Change in total exercise duration compared to baseline
Time frame 12 months
Other outcome
Doctor Visits
Number of unplanned office visits due for angina, and any hospitalizations or emergency department visits (for angina, non-angina cardiovascular causes) post procedure compared to baseline
Time frame 6 months, 12 months, 2 years, 3 years, 4 years, and 5 years
Other outcome
Exercise Tolerance Testing
Total exercise duration
Time frame 6 and 12 months
Other outcome
Seattle Angina Questionnaire (SAQ) Score
Change in other Seattle Angina Questionnaire (SAQ) domain scores and clinical summary score at 6 months (primary endpoint), 12 month and annually post procedure compared to baseline. The Seattle Angina Questionnaire (SAQ) is a disease-specific questionnaire used to quantify patients' symptoms of angina and the extent to which their angina affects their functioning and quality of life. Possible scores range from 0 (daily angina) to 100 (no angina). Lower scores indicate worse angina symptoms.
Time frame 6 month, 12 month, 2 years, 3 years, 4 years, and 5 years
Other outcome
Adverse Events
Number of deaths, myocardial infarctions, strokes, unplanned revascularization procedures in-hospital, at 30 days, 3 months, 6 months, 12 months and annually post procedure
Time frame 30 day, 6 month, 12 month, 2 years, 3 years, 4 years, and 5 years
Dates
| Start date | January 4, 2022 (actual) |
|---|---|
| Primary completion | July 1, 2027 (estimated) |
| Completion | January 1, 2032 (estimated) |
| First posted | November 1, 2021 (actual) |
| Last updated | August 26, 2026 |
| Results posted | Not stated in the registry record |
| Status last verified | August 2026 |
Actual means the event happened. Estimated means the sponsor expects it. The two mean different things.
Locations
91 sites are recruiting
Canada
| Facility | City | State or region | Status |
|---|---|---|---|
| CHUM | Montreal | Quebec | Recruiting |
| University of Ottawa Heart Institute | Ottawa | Ontario | Recruiting |
| IUCPQ-Ulaval | Québec | Quebec | Recruiting |
| Toronto General Hospital (UHN) | Toronto | Ontario | Recruiting |
| Vancouver General Hospital | Vancouver | British Columbia | Recruiting |
United Kingdom
| Facility | City | State or region | Status |
|---|---|---|---|
| Essex Cardiothoracic Centre | Basildon | Recruiting | |
| Queen Elizabeth Hospital Birmingham | Birmingham | Recruiting | |
| Bristol Heart Institute | Bristol | Recruiting | |
| Royal Papworth Hospital | Cambridge | Recruiting | |
| Dorset County Hospital NHS Foundation Trust | Dorchester | Recruiting | |
| Kettering General Hospital | Kettering | Recruiting | |
| Glenfield Hospital, Leicester | Leicester | Recruiting | |
| Liverpool Heart and Chest Hospital NHS Foundation Trust | Liverpool | Recruiting | |
| Royal Brompton Hospital | London | Recruiting | |
| Imperial College Healthcare NHS Trust | London | Recruiting | |
| St. Georges University Hospital | London | Recruiting | |
| King's College Hospital | London | Recruiting | |
| St. Thomas Hospital | London | Recruiting | |
| Royal Free Hospital | London | Recruiting | |
| Barts Health Centre | London | Recruiting | |
| Freeman Hospital | Newcastle upon Tyne | Recruiting | |
| Nottingham University Hospital | Nottingham | Recruiting | |
| Oxford University Hospital | Oxford | Recruiting | |
| Royal Bournemouth Hospital | Poole | Recruiting | |
| Musgrove Park Hospital | Taunton | Recruiting |
United States
| Facility | City | State or region | Status |
|---|---|---|---|
| University of Michigan | Ann Arbor | Michigan | Recruiting |
| Emory Hospital | Atlanta | Georgia | Recruiting |
| Northside Hospital | Atlanta | Georgia | Withdrawn |
| Ascension Texas Cardiovascular | Austin | Texas | Recruiting |
| Massachusetts General Hospital | Boston | Massachusetts | Recruiting |
| Brigham and Women's Hospital | Boston | Massachusetts | Recruiting |
| Ascension St. Vincent Heart Center | Carmel | Indiana | Recruiting |
| Novant Health | Charlotte | North Carolina | Recruiting |
| University of Virginia | Charlottesville | Virginia | Recruiting |
| Northwestern University | Chicago | Illinois | Recruiting |
| The Christ Hospital | Cincinnati | Ohio | Recruiting |
| Cleveland Clinic | Cleveland | Ohio | Recruiting |
| The Ohio State University | Columbus | Ohio | Recruiting |
| Henry Ford St. Johns | Detroit | Michigan | Recruiting |
| Henry Ford Hospital | Detroit | Michigan | Recruiting |
| Medical City Fort Worth | Fort Worth | Texas | Recruiting |
| The Cardiac and Vascular Institute | Gainesville | Florida | Recruiting |
| Northeast Georgia | Gainsville | Georgia | Recruiting |
| Corewell Health | Grand Rapids | Michigan | Recruiting |
| Hackensack University | Hackensack | New Jersey | Recruiting |
| Cardiovascular Institute of the South | Houma | Louisiana | Recruiting |
| HCA Houston Healthcare Medical Center | Houston | Texas | Withdrawn |
| University of Texas Health Science Center at Houston | Houston | Texas | Recruiting |
| Texas Heart Institute | Houston | Texas | Recruiting |
| Houston Methodist | Houston | Texas | Recruiting |
46 further sites are listed in the registry record.
Study documents
No documents are linked in this registry record.
Changes over time
- August 12, 2026
Site added
1 site added (96 total)
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