Safety and Clinical Performance of the Freesolve Resorbable Magnesium Scaffold (RMS) System in Subjects With Coronary Artery Lesions (BIOMAG-III)

Safety and Clinical Performance of the Drug Eluting Resorbable Coronary Magnesium Scaffold System (Freesolve) in the Treatment of Subjects With de Novo Lesions in Native Coronary Arteries

The objective of this study is to assess the safety and efficacy of the Freesolve resorbable magnesium scaffold (RMS) in the treatment of subjects with up to two de novo lesions in native coronary arteries compared to the Xience coronary drug-eluting stent (DES) system

Study Overview

• Status: Not yet recruiting
• Conditions: Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Coronary Artery Disease; Pain; Coronary Disease; Arteriosclerosis; Arterial Occlusive Diseases; Neurologic Manifestations; Chest Pain; Angina Pectoris; Acute Coronary Syndrome; Signs and Symptoms; Pathological Conditions, Signs and Symptoms
• Intervention / Treatment: Device: Freesolve RMS; Device: Xience DES

Detailed Description

The BIOMAG-III clinical trial is a prospective, international, multi-center, single-blinded, randomized controlled, non-inferiority trial to compare the Freesolve Sirolimus Eluting Coronary Resorbable Magnesium Scaffold (Freesolve RMS) System with the Xience Everolimus Eluting Stent (Xience DES) System. with respect to Target Lesion Failure (TLF) rate at 12 months. Subjects will be randomized in a 2:1 fashion Freesolve to Xience. A total of up to 1859 subjects will be randomized at up to 120 total sites worldwide including North America, Europe, and Asia Pacific. Clinical follow-up will be conducted at 1, 6, and 12 months and at 2, 3, 4, and 5 years post-procedure.

• Study Type: Interventional
• Enrollment (Estimated): 1859
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: BIOMAG-III Project Manager; Phone Number: 1-866-246-6990; Email: biomag_us@teleflex.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Clinical Inclusion Criteria:

1. Subject is ≥ 18 years and ≤ 80 years of age
2. Subject has provided written informed consent as approved by the Ethics Committee / Institutional Review Board (IRB) of the respective clinical site prior to the study related procedures
3. Subject is eligible for PCI according to the applicable guidelines
4. Subject is an acceptable candidate for coronary artery bypass surgery

5. Subjects with stable or unstable angina pectoris, documented silent ischemia/abnormal physiologic testing or hemodynamically stable non-ST elevation myocardial infarction (NSTEMI) patients without angiographic evidence of thrombus at target lesion

   Note: STEMI patients may be eligible for the study for treatment of selected non-culprit lesions, if:

   • Subject and target lesion(s) meet all inclusion and no exclusion criteria and consent occurs at least ≥ 72 hours after successful treatment of the culprit lesion(s) [lesion(s) causing the acute STEMI];
   • Subject is hemodynamically stable with documented declining cardiac biomarkers;
   • Target lesion(s) to be treated are not located in the culprit vessel(s) and are not culprit lesion(s)
6. Subject is eligible for Dual Antiplatelet Therapy (DAPT) with aspirin plus either clopidogrel, prasugrel, ticagrelor or ticlopidine
7. Documented left ventricular ejection fraction (LVEF) ≥ 30% within 6 months prior to or during the procedure (prior to randomization)
8. Subject is willing and able to comply with protocol requirements, including completion of study visits for the duration of the study

Angiographic Inclusion Criteria:

1. Subjects with a maximum of two single de novo target lesions each in separate native coronary arteries
2. Target vessel must have a reference diameter between 2.5-4.2 mm by operator visual estimation, which may be assisted by Quantitative Coronary Angiography (QCA) / Intravascular Ultrasound (IVUS) / Optical Coherence Tomography (OCT)
3. Target lesion(s) must be ≤ 36 mm in length by operator visual estimation, which may be assisted by QCA / IVUS / OCT, (or < 20 mm for target lesion(s) to be treated with a study device < 3.0 mm in diameter) and must be amenable to treatment with a single study device
4. Target lesion stenosis ≥ 50% and < 100% by operator visual estimation, which may be assisted by QCA / IVUS / OCT. Target lesion stenosis < 70% by visual estimation, should have clinical justification for treatment as per local standards.
5. Target lesion must have a Thrombolysis in Myocardial Infarction (TIMI) flow ≥ 1

Clinical Exclusion Criteria:

1. Subject is pregnant and/or breastfeeding or intends to become pregnant during the duration of the study
2. Subject has clinical symptoms and/or electrocardiogram (ECG) changes consistent with STEMI < 72 hours prior to the index procedure Note: Hemodynamically stable non-STEMI (NSTEMI) subjects are eligible for study enrollment
3. Subject has undergone prior PCI within the target vessel during the last 12 months prior to the index procedure or prior PCI within a non-target vessel < 72 hours prior to the index procedure
4. Subject is on dialysis or has impaired renal function (serum creatinine > 2.5 mg/dL or 221 µmol/L, determined within 7 days prior to the index procedure)
5. Subject has a known allergy to contrast medium that cannot be adequately premedicated, or any known allergy to aspirin, P2Y12 inhibitors, both heparin and bivalirudin, sirolimus, everolimus (or similar limus drugs), poly L-lactide, the scaffold material (magnesium, aluminum, tantalum), or Xience stent material (cobalt, chromium, tungsten, nickel, methacrylic polymer, and fluoropolymer)
6. Subject is receiving oral or intravenous immunosuppressive therapy (inhaled steroids are permitted) or has known life-limiting immunosuppressive or autoimmune disease (e.g., human immunodeficiency virus, systemic lupus erythematosus; diabetes mellitus is permitted)
7. Life expectancy less than 1 year
8. Planned surgery or dental surgical procedure within 6 months after index procedure, unless DAPT can be maintained
9. In the investigator's opinion subject will not be able to comply with the follow-up requirements
10. Subjects under oral anticoagulation therapy (OAC) prior to index procedure unless DAPT + OAC (i.e., triple therapy) can be maintained for a minimum of 1 month
11. Subject has had a stroke or transient ischemic attack (TIA) within 6 months prior to the index procedure
12. Subject with active bleeding disorder, active coagulopathy, or any other reason, who is ineligible for DAPT
13. Subject is currently participating or plans to participate in another study with an investigational device or an investigational drug
14. Subject has known severe aortic or mitral valve stenosis/insufficiency or has previously undergone transcatheter aortic valve replacement (TAVR)

Angiographic Exclusion Criteria:

1. Target vessel has been previously treated and the target lesion is within 5 mm proximal or distal to the previously treated lesion
2. Left main coronary artery disease
3. Target lesion is totally occluded (100% stenosis)
4. Thrombus in target vessel
5. Future planned staged PCI either in target or non-target vessel
6. Ostial target lesion within the left anterior descending (LAD), left circumflex (LCX), or right coronary artery (RCA) (within 5.0 mm of vessel origin)
7. Target lesion involves a side branch ≥ 2.0 mm in diameter that requires a two-device strategy after pre-dilatation
8. Target lesion is located in or supplied by an arterial or venous bypass graft
9. Target lesion with excessive tortuosity proximal to or within the lesion based on visual estimation or heavily calcified target lesion which cannot be adequately pre-dilated by a non-compliant and/or cutting/scoring balloon as described in angiographic exclusion criteria 10
10. Target lesion requires treatment with a device other than the non-compliant balloon and/or cutting/scoring balloon prior to scaffold/stent placement (including but not limited to atherectomy devices, intravascular lithotripsy, drug-coated balloons, etc.)
11. Target vessel was treated with brachytherapy any time prior to the index procedure.
12. Unsuccessful pre-dilatation, defined as residual stenosis > 20% (by visual estimation) and/or angiographic complications (e.g., distal embolization, side branch closure, flow-limiting dissections)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Xience DES; Intervention with a Xience Everolimus Eluting Stent System	Device: Xience DES; Xience Everolimus Eluting Stent System
Experimental: Freesolve RMS; Intervention with a Freesolve Sirolimus Eluting Coronary Resorbable Magnesium Scaffold (RMS) System	Device: Freesolve RMS; Freesolve Sirolimus-Eluting Coronary Resorbable Magnesium Scaffold (RMS) System, a drug-eluting balloon-expandable resorbable scaffold

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Target Lesion Failure (TLF) rate at 12 months post-index procedure	The primary endpoint is Target Lesion Failure (TLF) at 12 months, a composite of Cardiac Death, Target Vessel Q-wave or non-Q wave MI, or clinically driven target lesion revascularization (TLR).	12 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Procedure success	Procedure success defined as achievement of < 30% final residual diameter stenosis [by Quantitative Coronary Angiography (QCA) or visual estimation] of the target lesion using the assigned study device only, without the occurrence of cardiac death, Q-wave or non-Q-wave MI, or repeat revascularization of the target lesion during the hospital stay	Hospital Discharge (6-24 hours post-index procedure)
Device Success	Device Success defined as a final residual diameter stenosis of < 30% by QCA or visual estimation, using the assigned device only with; successful delivery of the device to the target lesion, and; appropriate device deployment, and; successful removal of the delivery system	Hospital Discharge (6-24 hours post-index procedure)
Target lesion failure (TLF)	TLF is defined as a composite of Cardiac Death, Target Vessel Q-wave or non-Q-wave myocardial infarction (MI), or clinically driven Target Lesion Revascularization (TLR)	Time Frame: 1, 6 months and 2, 3, 4 and 5 years post-index procedure
Target Vessel Failure (TVF)	Target Vessel Failure (TVF), a composite of Cardiac Death, Target Vessel Q-wave or non-Q wave MI, or clinically driven Target Vessel Revascularization (TVR)	1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Cardiac death		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Cardiovascular death		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
All-cause mortality		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Target vessel MI in accordance with the primary endpoint definitions for periprocedural and non-periprocedural MI		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Any MI (including non-target vessel territory)		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Clinically driven TLR		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Clinically driven TVR		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Scaffold/stent thrombosis (definite, definite/probable, probable) according to Academic Research Consortium (ARC-2) criteria for acute, sub-acute, late, very late and cumulative scaffold/stent thrombosis		1, 6, 12 months and 2, 3, 4 and 5 years post-index procedure
Powered Secondary Endpoint 1: TLF from 1-5 Years	A powered secondary endpoint of cumulative TLF rates between 1 and 5 years post-procedure will be evaluated.	1 to 5 years post-index procedure
Powered Secondary Endpoint 2: TLF at 12 Months in the Diabetic Population	A powered secondary endpoint of TLF at 12 months in the diabetic population will be evaluated.	12 months post-index procedure

Collaborators and Investigators

• Sponsor: Teleflex

Study record dates

Study Major Dates

• Study Start (Estimated): May 1, 2026
• Primary Completion (Estimated): June 1, 2029
• Study Completion (Estimated): June 1, 2033

Study Registration Dates

• First Submitted: November 20, 2025
• First Submitted That Met QC Criteria: November 20, 2025
• First Posted (Actual): December 2, 2025

Study Record Updates

• Last Update Posted (Actual): December 2, 2025
• Last Update Submitted That Met QC Criteria: November 20, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Keywords: Sirolimus; RMS; Resorbable Magnesium Scaffold; Drug eluting absorbable metal scaffold
• Additional Relevant MeSH Terms: Nervous System Diseases; Pain; Neurologic Manifestations; Cardiovascular Diseases; Heart Diseases; Vascular Diseases; Coronary Artery Disease; Myocardial Ischemia; Arteriosclerosis; Coronary Disease; Acute Coronary Syndrome; Angina Pectoris; Chest Pain; Arterial Occlusive Diseases; Signs and Symptoms; Pathological Conditions, Signs and Symptoms
• Other Study ID Numbers: G230176

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: No IPD sharing is planned at this time. This study evaluates an investigational device under an FDA IDE. The sponsor may consider sharing de-identified IPD under controlled access following completion of primary endpoint analysis and regulatory review. Summary results will be reported in scientific publications and public registries.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes