ClinicalTrials.gg
Not yet recruitingNCT07796412IVUS-SCBUpdated Oct 15, 2026

IVUS-Guided Sirolimus-Coated Balloon Versus Sirolimus-Eluting Stent for De Novo Large Vessel Lesions in ACS

An interventional study of IVUS-Guided Sirolimus-Coated Balloon and IVUS-Guided Sirolimus-Eluting Stent in Acute Coronary Syndrome (ACS) Undergoing Percutaneous Coronary Intervention (PCI), sponsored by China National Center for Cardiovascular Diseases. Not yet recruiting at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-15.

Sponsored by China National Center for Cardiovascular Diseases · Not applicable, Interventional, and Treatment

Updated Oct 15, 2026Start date movedPrimary completion moved+1 moreGo to Updates ↓

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Not applicable
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 185 studies in Acute Coronary Syndrome with a site in China — 56 open to participants now, 63 under way, 3 of them phase 3. Acute Coronary Syndrome · China.

Planned enrollment
87th of 115
150 · median 499
Started
2026
with 9 others
No phase
47 of 185
20 open now
Primary completion
2028-12
later than 57 of 62 live
Registered
183rd of 185
by date
Lead sponsor
6 of 185
China National Center for Cardiovascular Diseases

Among the 185 studies in Acute Coronary Syndrome with a site in China, this one is the 87th largest by planned enrollment of the 115 interventional ones that give a count, is one of 10 that started in 2026, is one of 47 with no phase, reaches primary completion later than 57 of the 62 other live ones, and was the 183rd registered.

Acute Coronary Syndrome

1,490 studies on the registry are indexed under Acute Coronary Syndrome; 272 are open to participants now.

Browse Acute Coronary Syndrome studies →

Open to participants now

56 of the 185 studies in Acute Coronary Syndrome with a site in China are open now. Recruiting first, the newest first:

51 more — sign in →

All 56 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 196 Acute Coronary Syndrome studies recruiting now, 145 (74%) set no upper age limit and 19 (10%) stop at 75 or younger; 15 take children under 18; 15 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 185 studies in Acute Coronary Syndrome with a site in China, or all of them as a file.
02

Study summary

The goal of this interventional study is to evaluate the efficacy and safety of an intravascular ultrasound (IVUS)-guided sirolimus-coated balloon (SCB)-based strategy versus planned sirolimus-eluting stent (SES) implantation in patients with acute coronary syndrome (ACS) and de novo large-vessel coronary lesions. The main question is whether the SCB-based strategy is non-inferior to the SES strategy with respect to in-segment late lumen loss (LLL) at 9 months. Following adequate lesion preparation and confirmation according to the prespecified angiographic and IVUS criteria that the target lesion is suitable for both randomized treatment strategies, participants will be randomly assigned to undergo either SCB treatment without routine stent implantation or planned SES implantation. In the SCB group, bail-out SES implantation will be performed when clinically necessary, such as in cases of significant residual stenosis or flow-limiting dissection. Participants will undergo angiographic and IVUS follow-up at 9 months, and clinical outcomes will be assessed through 12 months.

Read the detailed description

Lesion preparation will be performed before randomization. Individuals with unsuccessful lesion preparation will be considered pre-randomization failures and will not be assigned to either study arm. The reason for unsuccessful lesion preparation, the treatment subsequently received, and limited safety information through 48 hours after the procedure will be documented for screening and safety oversight purposes only. These individuals will not undergo protocol-mandated follow-up and will not be included in the efficacy or comparative safety analyses of the randomized trial.

03

Conditions studied

  • Acute Coronary Syndrome (ACS) Undergoing Percutaneous Coronary Intervention (PCI)

Keywords

  • Large Vessel
  • Acute Coronary Syndrome
  • Sirolimus-Coated Balloon
  • Sirolimus-Eluting Stent
  • Intravascular Ultrasound
  • Non-inferiority Trial
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

All of the following criteria must be met:

  1. Aged ≥18 years.
  2. Diagnosed with acute coronary syndrome (ACS), including unstable angina (UA), non-ST-segment elevation myocardial infarction (NSTEMI), or ST-segment elevation myocardial infarction (STEMI). The diagnosis, classification, and clinical management of ACS will follow the 2025 ACC/AHA/ACEP/NAEMSP/SCAI Guideline for the Management of Patients With Acute Coronary Syndromes. NSTEMI and STEMI will be diagnosed according to the Fourth Universal Definition of Myocardial Infarction.
  3. A de novo lesion in a large native coronary artery with a target lesion reference vessel diameter ≥2.75 mm.
  4. Only one target lesion is considered to require intervention and is suitable for treatment with a sirolimus-coated balloon (SCB), with bail-out stenting if necessary, or with a sirolimus-eluting stent (SES).
  5. Successful lesion preparation according to the prespecified angiographic and IVUS criteria, confirming that the target lesion is suitable for both randomized treatment strategies.
  6. The participant has fully understood the study and provided written .

Exclusion criteria

Exclusion Criteria

Participants meeting any of the following criteria will be excluded:

  1. Acute heart failure, acute cardiogenic shock, or persistent hemodynamic instability.
  2. Percutaneous coronary intervention within the previous 12 months, including stent implantation, balloon angioplasty, or SCB treatment.
  3. A bifurcation lesion requiring simultaneous intervention of both the main vessel and side branch.
  4. In-stent restenosis in the target vessel; only de novo lesions are eligible for this study.
  5. Lesion anatomy unsuitable for SCB treatment or conventional SES implantation, including:

i. Lesion length >40 mm.

ii. Chronic total occlusion (CTO).

iii. A left main coronary artery target lesion or severe left main coronary artery disease requiring simultaneous treatment.

iv. Severe calcification expected to preclude satisfactory lesion preparation.

v. Severe vessel tortuosity or angulation >90° that may prevent safe device delivery.

vi. A bypass graft lesion or myocardial bridging involving the target lesion.

f. Severe hepatic or renal impairment.

g. A concomitant condition associated with a of less than 1 year.

h. Previous coronary artery bypass grafting (CABG).

i. Unsuitable for percutaneous coronary intervention or long-term antithrombotic therapy, including:

Known to aspirin, heparin, antiplatelet agents, or contrast media.

A history of intracranial hemorrhage. Pregnancy, breastfeeding, or planned pregnancy during the study period.

j. Previous prosthetic heart valve replacement.

k. Participation in another clinical study or clinical trial within the previous 12 months.

l. Known severe to sirolimus or its derivatives, any component of the study devices-including the SES polymer or metal-or contrast media; or inability or unwillingness to undergo repeat coronary angiography and IVUS at 9 months for any other reason.

m. Considered unsuitable for enrollment by the investigator because of anticipated nonadherence or any other reason.

Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
150 participants (estimated)

Study arms

  • Experimental
    IVUS-Guided Sirolimus-Coated Balloon

    Following successful lesion preparation, the sirolimus-coated balloon will be used for drug delivery without routine stent implantation. Bail-out sirolimus-eluting stent implantation will be performed in cases of significant residual stenosis, flow-limiting dissection, impaired coronary flow, or other prespecified indications. Participants requiring bail-out stenting will remain in the SCB group and will be analyzed according to their randomized treatment strategy.

    Device: IVUS-Guided Sirolimus-Coated Balloon

  • Active comparator
    IVUS-Guided Sirolimus-Eluting Stent

    Following successful lesion preparation, planned sirolimus-eluting stent implantation will be performed under IVUS guidance to optimize stent expansion and apposition.

    Device: IVUS-Guided Sirolimus-Eluting Stent

Interventions

  • DeviceIVUS-Guided Sirolimus-Coated Balloon

    Following adequate lesion preparation and confirmation of feasibility via IVUS assessment, the SCB will be used for dilation to achieve drug delivery without routine stent implantation. In cases of significant residual stenosis or flow-limiting dissection, bail-out SES implantation will be performed. Post-procedure antithrombotic therapy and follow-up will be managed according to guideline recommendations and at the discretion of the clinician.

  • DeviceIVUS-Guided Sirolimus-Eluting Stent

    Following successful lesion preparation, the SES will be implanted under IVUS guidance to optimize stent expansion and apposition. Post-procedure antithrombotic therapy and follow-up will be managed according to guideline recommendations and at the discretion of the clinician.

06

What researchers measure

Primary outcomes

  1. In-Segment Late Lumen Loss at 9 Months

    In-segment late lumen loss (LLL) of the target lesion is calculated as the in-segment minimal lumen diameter (MLD) measured immediately after the index procedure minus the in-segment MLD measured at 9-month follow-up, assessed by quantitative coronary angiography (QCA) by an independent angiographic core laboratory. The in-segment analysis region comprises the device-treated segment plus the 5 mm proximal and 5 mm distal edge segments. A negative value indicates lumen enlargement relative to the immediate post-procedural result. The mean value will be reported.

    Time frame: 9 months

Secondary outcomes

  1. Periprocedural Complications

    A composite of cardiovascular death, periprocedural myocardial infarction, acute target lesion or target vessel thrombosis, and acute target lesion or target vessel occlusion occurring within 48 hours after the procedure.

    Time frame: Within 48 hours after the procedure

  2. Target Lesion Failure (TLF)

    a composite of cardiovascular death, target vessel myocardial infarction (TV-MI), and clinically driven target lesion revascularization (TLR).

    Time frame: 12 months

  3. Patient-oriented Composite Endpoint (PoCE)

    a composite of all-cause death, any myocardial infarction, any stroke, and any revascularization

    Time frame: 12 months

  4. Bleeding Events

    assessed according to Bleeding Academic Research Consortium (BARC) types 2-5 criteria.

    Time frame: 12 months

  5. Net Adverse Clinical Events (NACE)

    Time to the first occurrence of any PoCE component or BARC type 3 or 5 bleeding.

    Time frame: 12 months

  6. IVUS-derived External Elastic Membrane area

    Changes in IVUS-measured external elastic membrane (EEM) area within the target lesion segment from pre-procedure to post-procedure and from post-procedure to the 9-month follow-up.

    Time frame: Pre-procedure, immediately post-procedure, and 9 months

  7. IVUS-derived minimum lumen area

    Changes in intravascular ultrasound (IVUS)-measured minimum lumen area (MLA) from pre-procedure to post-procedure and from post-procedure to 9-month follow-up.

    Time frame: Pre-procedure, immediately post-procedure, and 9 months

  8. IVUS-derived plaque burden

    Changes in intravascular ultrasound (IVUS)-measured plaque burden from pre-procedure to post-procedure and from post-procedure to 9-month follow-up.

    Time frame: Pre-procedure, immediately post-procedure, and 9 months

  9. Minimum lumen diameter

    Target lesion segment minimum lumen diameter (MLD) measured by quantitative coronary angiography (QCA) before lesion preparation, immediately after the procedure, and at 9-month follow-up.

    Time frame: Pre-procedure, immediately post-procedure, and 9 months

  10. Percent diameter stenosis

    Target lesion segment percent diameter stenosis (%DS) measured by QCA before lesion preparation, immediately after the procedure, and at 9-month follow-up.

    Time frame: Pre-procedure, immediately post-procedure, and 9 months

  11. Binary restenosis

    Proportion of participants with target lesion segment %DS ≥50% at 9-month follow-up, as assessed by QCA

    Time frame: 9 months

  12. Acute lumen gain

    Acute lumen gain, calculated as post-procedure MLD minus pre-procedure MLD.

    Time frame: Immediately post-procedure

  13. Net lumen gain

    Net lumen gain, calculated as 9-month MLD minus pre-procedure MLD.

    Time frame: 9 months

  14. Late lumen enlargement

    In-segment late lumen enlargement (LLE) is defined as an in-segment late lumen loss (LLL) value less than 0 mm. In-segment LLL is calculated as the in-segment minimal lumen diameter (MLD) measured immediately after the index procedure minus the in-segment MLD measured at 9-month follow-up, assessed by quantitative coronary angiography (QCA) by an independent angiographic core laboratory. The in-segment analysis region comprises the device-treated segment plus the 5 mm proximal and 5 mm distal edge segments. A negative LLL value indicates lumen enlargement relative to the immediate post-procedural result. Each participant is classified as having LLE or not; a single value - the percentage of participants meeting this criterion - will be reported.

    Time frame: 9 months

  15. Length of Index Hospital Stay

    Length of stay for the index hospitalization, defined as the number of days from admission to discharge for the procedure hospitalization.

    Time frame: From admission to discharge for the index hospitalization

  16. Percentage of Participants With Cardiovascular-Related Rehospitalization

    The percentage of participants with at least one unplanned rehospitalization for a cardiovascular cause after discharge from the index hospitalization. Each participant is counted only once regardless of the number of rehospitalizations.

    Time frame: 12 months

  17. Percentage of Participants With Repeat Coronary Revascularization

    The percentage of participants undergoing any repeat coronary revascularization, including percutaneous coronary intervention or coronary artery bypass grafting, of any vessel after the index procedure. Each participant is counted only once regardless of the number of procedures.

    Time frame: 12 months

  18. Cumulative Cardiovascular-Related Direct Medical Costs

    Cumulative direct medical costs related to cardiovascular care, including the index procedure, index hospitalization, rehospitalizations, and repeat revascularization procedures.

    Time frame: 12 months

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Yes — Deidentified individual participant data that underlie the results reported in the primary publication will be made available to qualified researchers upon reasonable request and approval of a methodologically sound research proposal, subject to an appropriate data use agreement.

Supporting information: Study protocol, Statistical analysis plan

Time frame: Beginning 36 months after publication of the primary study results and continuing for 5 years.

Access criteria: Deidentified individual participant data underlying the results reported in the primary publication will be available to qualified researchers who submit a methodologically sound research proposal. Requests will be reviewed by the study investigators and, where applicable, relevant institutional or ethics authorities. Proposals that substantially overlap with prespecified ongoing analyses may be deferred until completion of those analyses. Data will be provided for the purposes specified in the approved proposal, subject to an appropriate data use agreement and applicable privacy and data protection requirements.

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Dec 2026; primary completion for Dec 2028, 24 months later.

Of 213 non-industry interventional studies with no phase under Acute Coronary Syndrome, half reached primary completion within 34 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 46. This study's planned 24 months is below that.

Counting every sponsor, half of 228 studies reached it within 34 months; a quarter within 17 and three quarters within 46.

Since we started tracking on Sep 25, 2026, the dates moved once, on Oct 15, 2026: start Sep 2026 → Dec 2026, primary completion Dec 2027 → Dec 2028 and completion May 2028 → Jan 2029.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Aug 21, 2026
First posted
Sep 1, 2026
StartEst.
Dec 1, 2026was Sep 2026
Primary completionEst.
Dec 31, 2028was Dec 2027
CompletionEst.
Jan 30, 2029was May 2028
Last update
Oct 15, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Start date
Sep 1, 2026→Dec 1, 2026
Oct 15, 2026
Primary completion
Dec 31, 2027→Dec 31, 2028
Oct 15, 2026
Study completion
May 1, 2028→Jan 30, 2029
Oct 15, 2026
Show all 1 update
  1. Oct 15, 2026
    Start date Sep 1, 2026→Dec 1, 2026
    Primary completion Dec 31, 2027→Dec 31, 2028
    Study completion May 1, 2028→Jan 30, 2029
    + 2 other changes: verification date and data sharing statement

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07796412
Responsible party
Erli Zhang (Principal Investigator, Chinese Academy of Medical Sciences, Fuwai Hospital) — Principal investigator
First posted
Sep 1, 2026
Start date
Dec 1, 2026 (estimated)
Primary completion
Dec 31, 2028 (estimated)
Completion
Jan 30, 2029 (estimated)
Last update
Oct 15, 2026

Study contacts

Erli Zhang
Contact
zhangerli@fuwaihospital.org
+86 13621010047

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion