Tiny study checks how drug balloon releases medicine in leg arteries
NCT ID NCT06065345
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study looked at how a special balloon coated with a drug called sirolimus derivative releases medication into the blood after being used to open blocked leg arteries. Six people with peripheral artery disease took part. The goal was to measure drug levels over time, not to test if the balloon works better than others.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- sirolimus derivative (BIOtorcin)
- What this could lead to
- If successful, this could help confirm that the drug-coated balloon delivers medication safely and predictably, supporting its use in treating peripheral artery disease.
- What could go wrong
- This is a very small, early-stage study with only 6 participants, focused on drug levels in the blood, not on whether the treatment actually improves symptoms or prevents artery reblockage.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
6 people
The number who actually took part.
- Started
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May 2024
- Finished
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Jul 2025
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. The subject has provided written informed consent 2. The subject is willing to participate in the clinical investigation and to comply with the study procedures and follow-up visits 3. Lifestyle-limiting claudication or rest pain requiring treatment of superficial femoral (SFA) and/or proximal popliteal artery (PPA) 4. Age ≥ 18 years old 5. Rutherford-Becker Clinical Category of 2, 3 or 4 6. Target vessel reference diameter ≥5 mm and ≤ 6 mm (by visual estimation) 7. De novo lesion with \>50% stenosis by operator visual estimate within the SFA and/or proximal popliteal arteries in a single limb. 8. Lesion must be located ≥ 1 cm below the Common Femoral Artery (CFA) bifurcation and terminate distally at ≥ 3 cm proximal to the knee joint (radiographic joint space). 9. Single lesion length ≤170 mm for de novo stenotic lesions, or ≤ 100 mm for occluded lesions (one long lesion or multiple serial lesions) by operator visual estimate. Notes: (1) Only 1 lesion per patient can be treated. Multiple serial lesions are allowed if they can be treated as a single lesion with a maximum of 2 balloons. (2) a non-occlusive lesion that includes a totally occluded segment along its length are eligible provided that the overall treated lesion length is ≤170 mm (with / or without an occluded segment not greater than 100 mm in length). 10. Successful guidewire crossing of lesion. 11. After pre-dilatation, the target lesion is ≤ 30% residual stenosis with no flow limiting dissection and treatable with a maximum of 2 balloons. 12. Inflow artery is patent, free from significant lesion stenosis (\>50% stenosis considered significant) as confirmed by angiography. Note: Where required, inflow iliac arteries (common and external iliac arteries only) must be successfully treated during the index procedure. Completion angiography must confirm successful treatment of inflow disease (≤50% residual stenosis, no distal embolization, and no Grade C or greater dissection) prior to pre-dilatation of the target lesion. Drug-eluting devices are not allowed for treatment of the occluded inflow iliac arteries. 13. Patency of the popliteal segments P2 and P3 with at least 1 patent infrapopliteal run-off vessel (that may have a stenosis of less than 50% not interfering with the outflow to the pedal arch) to the ankle in continuity with the native femoropopliteal artery, in the target limb confirmed at baseline. (Note: treatment of outflow disease is permitted. Drug-eluting devices are not allowed for outflow treatment) Exclusion Criteria: 1. Females who are pregnant, lactating, or intended to become pregnant, or males intending to father children during the study 2. Subject under current medication known to affect CYP3A4 metabolism, or consuming food or beverages that are known substrates of CYP3A4 3. Contraindication to dual anti-platelet therapy 4. Subject receiving chronic anticoagulation therapy (e.g. low molecular weight heparin, warfarin, or novel direct oral anticoagulants (N(D)OACs)) if the treatment cannot be interrupted 48 hours prior to the procedure 5. Known intolerance to study medications, Limus- like drug or contrast agents that in the opinion of the investigator could not be adequately pretreated 6. Current participation in an investigational drug or another device study 7. History of hemorrhagic stroke within 3 months 8. Patients with a history of Myocardial Infarction (MI) or thrombolysis within 30 days prior-index procedure 9. Previous or planned surgical or interventional procedure within 14 days before or 30 days after index procedure (successful treatment of the ipsilateral and contralateral iliac arteries is permitted during the index procedure. Drug-eluting devices are not allowed for treatment of the occluded inflow iliac arteries) 10. Prior endovascular treatment of the target lesion (e.g., POBA, DCB, BMS, DES, cutting balloons, scoring balloons, cryoplasty, thrombectomy, atherectomy, brachytherapy or laser devices) 11. Previous placement of a bypass graft proximal to the target lesion 12. Chronic renal insufficiency (eGFR \< 30 mL/min within 72 hours prior to index procedure) 13. Patient requiring renal replacement therapy 14. No normal proximal arterial segment in which duplex ultrasound velocity ratios could be measured. 15. Subject is unable to walk without assistance (e.g. walker, cane). 16. Subject is receiving immunosuppressant therapy. 17. Subject has known or suspected active infection at the time of the index procedure. 18. Subject has platelet count \< 100,000/mm3 or \> 700,000/mm3. 19. Subject has white blood cell (WBC) count \< 3,000/mm3. 20. Subject is unable to tolerate blood transfusions because of religious beliefs or other reasons. 21. Subject has history of gastrointestinal hemorrhage requiring a transfusion within 3 months prior to the index procedure. 22. Life expectancy less than 12 months due to other comorbidities, that in the investigators opinion, could limit subject ability to comply with the study required follow-up visits/procedure and threaten the study scientific integrity 23. Treatment of the contralateral limb during the same procedure or within 30 days following the study procedure (exclusive of the iliac arteries, which can be treated during the index procedure if no drug eluting technology is used) 24. Non femoral vascular access 25. Target lesion would require treatment with more than two BRight balloons 26. Known inadequate distal outflow 27. Acute or sub-acute thrombus in the target vessel 28. Aneurysmal target vessel 29. Use of adjunctive therapies (i.e. laser, atherectomy, cryoplasty, scoring/cutting balloon, brachytherapy) during the study procedure in the target lesion or target vessel 30. Presence of concentric calcification that precludes PTA pre-dilatation 31. Significant contralateral or ipsilateral common femoral disease that requires intervention during the index procedure 32. Persistent hemodynamically-significant stenosis following predilatation or residual stenosis of \>30%, stent placement, or flow-limiting (Grade D or greater) dissection following pre-dilatation 33. In-stent restenosis
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Royal Perth Hospital
Perth, WAUS, Australia
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