Coronary Artery DiseaseSPARX RCTNCT07397845
Stents Versus PAclitaxel Coated Balloons for Revascularization of CompleX and Small Coronary Vessels (SPARX) Trial
A study testing Protégé and Protégé NC, Agent and Drug Eluting Stent in people with Coronary Artery Disease and Drug Eluting Balloon, run by Translumina GmbH at 1 site in Switzerland.
Trial summary
The main objective of the SPARX trial is to compare paclitaxel-coated balloons to with contemporary DES in complex and small coronary artery lesions in patients with NSTEACS or CCS; the co-primary objective is to compare two different paclitaxel-coated balloons, Protégé and Agent, with each other. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Coronary Artery Disease, Drug Eluting Balloon, Drug Eluting Stent
- What is being tested?
- Protégé and Protégé NC, Agent and Drug Eluting Stent
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1,380 participants
- Where
- 1 siteSwitzerland
- Study dates
- 22 Apr 2026to Apr 2029
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Clinical inclusion criteria:
- Age≥18 years
- Patient with NSTE-ACS or CCS with either symptoms and/or ischemia on non-invasive or invasive testing (i.e. FFR/iFR, CMR, SPECT, PET-CT or stress-echo)
- The patient must be able to understand and provide written informed consent and comply with all study procedures
- Life expectancy of > 2 years Angiographic inclusion criteria:
- One or more trial target vessel (LAD, CX or RCA, or of their branches) with:
- Stenosis of ≥70% or
- Stenosis ≥50% and <70% (visually assessed) with evidence of ischemia by positive stress test, or FFR ≤0.80, or iFR <0.90 or IVUS minimum lumen area ≤4.0 mm2
- The target vessel/target lesion matches at least one of the following criteria
- Small vessel: vessel reference diameter is ≤ 3 mm
- Long lesions: length ≥ 25 mm
- Calcified lesion: grade 3 by angiography or confirmed on intravascular imaging
- Chronic total occlusion (CTO)
- Bifurcation lesions, including ostial LAD and ostial CX
- Lesions in diabetic coronary artery disease
- In-Stent Restenosis (ISR)
- Lesion preparation must be according to the 3rd DCB consensus, with lesions that have:
- ≤ 30% residual stenosis
- TIMI (Thrombolysis in Myocardial Infarction) flow grade 3.
- The absence of flow-limiting dissection (Type A-C allowed only)
Clinical exclusion criteria:
- STEMI or cardiogenic shock related to an acute MI within 2 days prior to the index PCI
- Pregnancy or nursing declarations (As per country specific guideline) (a negative pregnancy test is required of women with child-bearing potential within 7 days prior to enrollment)
- LVEF<30%
- Known contraindication or hypersensitivity to any limus family drugs, paclitaxel, or to medications such as heparin, aspirin, clopidogrel, ticlopidine, prasugrel and ticagrelor or any component of the devices.
- Allergy to imaging contrast media which cannot be adequately pre-medicated
- Stroke/TIA during the last 6 months, or any prior intracranial hemorrhage
- Active peptic ulcer or upper gastrointestinal bleeding within last 6 months
- Known renal insufficiency with an eGFR<30 ml/min1.73m2, or subject on dialysis, or acute renal failure (as per physician judgment)
- Planned surgery within 6 months with the necessity to stop DAPT
- History of bleeding diathesis or coagulopathy
- Platelet count<100.000 cells/mm3 or >400.000 cells/mm3, a WBC of <3000 cells/mm3, documented or suspected liver disease (including laboratory evidence of hepatitis)
- Patient is a recipient of a heart transplant
- Participation in another investigation with an investigational drug or another MD within the 30 days preceding and during the present investigation Angiographic exclusion criteria:
- Target lesion is in the left main coronary artery
- Target lesion is in a coronary artery bypass graft
- Flow limiting target vessel thrombus
- Evidence of aneurysm in target vessel within 10 mm of the target lesion
- Aorto-ostial target lesion (within 3 mm of the aorta junction)
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Deepanshi Thakur, MSc contact
Switzerland1 site, 1 recruiting
- Recruiting
Luzerner Kantonsspital Spitalstrasse, 6000 Luzern 16, Switzerland
Lucerne, Canton of Lucerne, 6000 Luzern 16
Monika Röthlin, 41 41 205 60 14 ext. +41, monika.roethlin@luks.ch
About this study
The main objective of the SPARX trial is to compare paclitaxel-coated balloons to with contemporary DES in complex and small coronary artery lesions in patients with NSTEACS or CCS; the co-primary objective is to compare two different paclitaxel-coated balloons, Protégé and Agent, with each other.
Read the detailed description
PCI with DES remains a cornerstone of interventional cardiology for the treatment of coronary artery disease. While DES have significantly improved outcomes compared to plain old angioplasty (POBA) and metal stents, there is still a risk of in-stent restenosis (ISR) and stent thrombosis (ST). To overcome these problems, non-stent techniques using only DCBs have emerged as a way of delivering anti-proliferative drugs to the vessel wall without the need for a permanent implant. It is hypothesised that this approach may promote positive remodelling and reduce the risk of vessel thrombosis and restenosis.
The use of PCI with DCB alone was first investigated for the treatment of ISR, where it showed good results and is currently recommended in guidelines for the treatment of ISR. There have also been several DCB trials in de novo coronary lesions, but the results have been more mixed. Many DCBs are now commercially available, both with paclitaxel and sirolimus coating, and it appears that there is no "class effect" due to the heterogeneity that exists within balloon designs, polymer coating, type of drug and concentrations used.
One of the first trials in de novo lesions, the PICCOLETO trial, was stopped early due to a higher MACE rate in the DCB group compared to the DES group. However, several weaknesses of the study may explain the worse outcome in those treated with DCBs compared to DES. The most important was probably the low dose of paclitaxel delivered by the balloon and the fact that only a small percentage of the population underwent lesion predilatation. Several studies have later shown non-inferiority of DCB to DES for de novo lesions, and the method is currently embraced by the interventional cardiology community.
Several DCBs are now available and approved for use, and more are on the way, but head-to-head data are scarce. The SPARX trial is designed to compare two DCBs, Protégé™ and Agent™, with conventional DES PCI in complex and small coronary lesions, with the idea that this type of coronary disease may benefit from a DCB-only technique. The trial will also compare the two certified and well-established paclitaxel-coated balloons, Protégé™ and Agent™. The hypothesis is that Protégé™ will perform at least as well as Agent™.
The primary objective of the SPARX trial is to compare paclitaxel-coated balloons with contemporary DES in complex and small coronary artery lesions in patients with non-ST elevation acute coronary syndrome (NSTEACS) or chronic coronary syndrome (CCS); The co-primary objective is to compare 2 different paclitaxel-coated balloons, Protégé™ and Agent™, with each other.
- Being tested
- Protégé and Protégé NC, Agent, Drug Eluting Stent
- Keywords
- SPARX RCT, Protege
- Medical subject headings
- Coronary Artery Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Protégé and Protégé NCDevice
Protégé Drug-eluting PTCA Balloon Catheters are rapid exchange catheters with a semi-compliant (Protégé DEB) balloon, or a non-compliant (NC) balloon (Protégé NC DEB), both with paclitaxel coating. Protégé is certified and CE marked.
AgentDevice
The AgentTM Paclitaxel-Coated Balloon Catheter (AgentTM DCB) is a monorail, semi-compliant PCI catheter. Agent™ PCB is CE and FDA certified and approved for clinical use both in Europe and in the US.
Drug Eluting StentDevice
Drug Eluting stents is a standard of care treatment for narrowed coronary arteries of the patients
| Study group | Role | What they receive |
|---|---|---|
| Paclitaxel coated balloon | Experimental | Patients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects Protege on the opted platform, then the patient is enrolled in this arm of the RCT Receives: Device: Protégé and Protégé NC |
| Drug coated balloon | Active comparator | Patients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects Agent on the opted platform, then the patient is enrolled in this arm of the RCT Receives: Device: Agent |
| Drug eluting stent (DES) | Active comparator | DES to standard of care treatment during percutaneous coronary intervention. In this RCT, patients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects DES (CE/FDA marked) on the opted platform, then the patient is enrolled in this arm of the RCT Receives: Device: Drug Eluting Stent |
What is being measured
The primary outcome is the main question the study is designed to answer.
Device oriented composite endpoint (DOCE)
- Cardiac death
- New target vessel - related myocardial infarction (TV-MI)
- Ischemia-driven target-lesion revascularization (TLR)
Measured: 24 months
Secondary outcomes (2)
Patient oriented composite endpoint (POCE)
- All-cause death
- Any Stroke
- All new MI (TV and non-TV related)
- Unplanned ischemia-driven repeat revascularization
Measured: 1 month, 6 month, 12 month, 18 month, 24 month
Additional outcomes
Total no of events in 1380 patients will be analysed-
- Definite or probable vessel (stent) thrombosis
- Ischemia-driven target-vessel revascularization (TVR)
- Major bleeding (BARC type 3 to 5)
Measured: 1 month, 6 month, 12 month, 18 month, 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Feb 2026
- Study start22 Apr 2026
- Primary completionApr 2028 (estimated)
- Study completionApr 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Coronary Artery DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Randomized, controlled, multi-centre, global, open label, clinical trial
- Masking
- None (open label)
- Enrolment
- 1,380 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Translumina GmbH
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Prof. Dr. Florim Cuculi, MD, Principal investigator, Cardiology Division Heart Center - Luzerner Kantonsspital Spitalstrasse, 6000 Luzern 16, SwitzerlandProf. Dr. Adnan Kastrati, MD PhD, Study chair, German Heart Center Munich Lazarettstraße 36, 80636 München, Germany
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07397845
- Sponsor's protocol ID
- TL/RCT/DEB/2025-04
- Acronym
- SPARX RCT
- Status last verified
- Oct 2025
- First submitted
- 5 Jan 2026
- Last updated
- 1 Jun 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Investigators do not plan to share individual participant data. However, an overall study data and it's publication results shall be uploaded upon completion of this project at Ct.Gov.
Study at a glance
From the registry record, last updated by the sponsor on 1 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Stents Versus PAclitaxel Coated Balloons for Revascularization of CompleX and Small Coronary Vessels (SPARX) Trial
- ClinicalTrials.gov ID
- NCT07397845
- Acronym / sponsor ID
- SPARX RCT / TL/RCT/DEB/2025-04
- Keywords
- SPARX RCT, Protege
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 1,380 participants (estimated)
- Lead sponsor
- Translumina GmbHIndustry (pharma, biotech, devices)
- Study start
- 22 Apr 2026 (actual)
- Primary completion
- Apr 2028 (estimated)
- Study completion
- Apr 2029 (estimated)
- First posted
- 9 Feb 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The main objective of the SPARX trial is to compare paclitaxel-coated balloons to with contemporary DES in complex and small coronary artery lesions in patients with NSTEACS or CCS; the co-primary objective is to compare two different paclitaxel-coated balloons, Protégé and Agent, with each other.
Detailed description
PCI with DES remains a cornerstone of interventional cardiology for the treatment of coronary artery disease. While DES have significantly improved outcomes compared to plain old angioplasty (POBA) and metal stents, there is still a risk of in-stent restenosis (ISR) and stent thrombosis (ST). To overcome these problems, non-stent techniques using only DCBs have emerged as a way of delivering anti-proliferative drugs to the vessel wall without the need for a permanent implant. It is hypothesised that this approach may promote positive remodelling and reduce the risk of vessel thrombosis and restenosis.
The use of PCI with DCB alone was first investigated for the treatment of ISR, where it showed good results and is currently recommended in guidelines for the treatment of ISR. There have also been several DCB trials in de novo coronary lesions, but the results have been more mixed. Many DCBs are now commercially available, both with paclitaxel and sirolimus coating, and it appears that there is no "class effect" due to the heterogeneity that exists within balloon designs, polymer coating, type of drug and concentrations used.
One of the first trials in de novo lesions, the PICCOLETO trial, was stopped early due to a higher MACE rate in the DCB group compared to the DES group. However, several weaknesses of the study may explain the worse outcome in those treated with DCBs compared to DES. The most important was probably the low dose of paclitaxel delivered by the balloon and the fact that only a small percentage of the population underwent lesion predilatation. Several studies have later shown non-inferiority of DCB to DES for de novo lesions, and the method is currently embraced by the interventional cardiology community.
Several DCBs are now available and approved for use, and more are on the way, but head-to-head data are scarce. The SPARX trial is designed to compare two DCBs, Protégé™ and Agent™, with conventional DES PCI in complex and small coronary lesions, with the idea that this type of coronary disease may benefit from a DCB-only technique. The trial will also compare the two certified and well-established paclitaxel-coated balloons, Protégé™ and Agent™. The hypothesis is that Protégé™ will perform at least as well as Agent™.
The primary objective of the SPARX trial is to compare paclitaxel-coated balloons with contemporary DES in complex and small coronary artery lesions in patients with non-ST elevation acute coronary syndrome (NSTEACS) or chronic coronary syndrome (CCS); The co-primary objective is to compare 2 different paclitaxel-coated balloons, Protégé™ and Agent™, with each other.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- Randomized, controlled, multi-centre, global, open label, clinical trial
| Arm | Type | Receives |
|---|---|---|
| Paclitaxel coated balloon | Experimental | Device: Protégé and Protégé NCPatients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects Protege on the opted platform, then the patient is enrolled in this arm of the RCT |
| Drug coated balloon | Active comparator | Device: AgentPatients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects Agent on the opted platform, then the patient is enrolled in this arm of the RCT |
| Drug eluting stent (DES) | Active comparator | Device: Drug Eluting StentDES to standard of care treatment during percutaneous coronary intervention. In this RCT, patients are only randomized after successful lesion preparations performed as per the the 3rd DCB Consensus. Post this, if the automatic generation of the device reflects DES (CE/FDA marked) on the opted platform, then the patient is enrolled in this arm of the RCT |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Protégé and Protégé NCProtégé Drug-eluting PTCA Balloon Catheters are rapid exchange catheters with a semi-compliant (Protégé DEB) balloon, or a non-compliant (NC) balloon (Protégé NC DEB), both with paclitaxel coating. Protégé is certified and CE marked. | Device | Paclitaxel coated balloon |
| AgentThe AgentTM Paclitaxel-Coated Balloon Catheter (AgentTM DCB) is a monorail, semi-compliant PCI catheter. Agent™ PCB is CE and FDA certified and approved for clinical use both in Europe and in the US. | Device | Drug coated balloon |
| Drug Eluting StentDrug Eluting stents is a standard of care treatment for narrowed coronary arteries of the patients | Device | Drug eluting stent (DES) |
Primary outcome
Device oriented composite endpoint (DOCE)
Time frame: 24 months
1. Cardiac death 2. New target vessel - related myocardial infarction (TV-MI) 3. Ischemia-driven target-lesion revascularization (TLR)
2 secondary outcomes
Patient oriented composite endpoint (POCE)
Time frame: 1 month, 6 month, 12 month, 18 month, 24 month
Additional outcomes
Time frame: 1 month, 6 month, 12 month, 18 month, 24 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Jun 2026.
- Individual participant dataSharing planned: No. Investigators do not plan to share individual participant data. However, an overall study data and it's publication results shall be uploaded upon completion of this project at Ct.Gov.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Deepanshi Thakur, MSc contact
Prof. Dr. Florim Cuculi, MD principal investigator
Cardiology Division Heart Center - Luzerner Kantonsspital Spitalstrasse, 6000 Luzern 16, Switzerland
Prof. Dr. Adnan Kastrati, MD PhD study chair
German Heart Center Munich Lazarettstraße 36, 80636 München, Germany
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Protégé and Protégé NC, Agent and Drug Eluting Stent in people with Coronary Artery Disease and Drug Eluting Balloon, run by Translumina GmbH at 1 site in Switzerland.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 1 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Dr Brijesh Mishra, PhD (+919654596737, drbrijeshmishra@translumina.in), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Device oriented composite endpoint (DOCE) (time frame: 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Jun 2026.