INFINITY-SWEDEHEART: Large-scale RCT of DynamX Coronary Bioadaptor vs drug-eluting stents

Confirms durable outcomes in real-world clinical practice

The INFINITY-SWEDEHEART trial is a large-scale, multi-center randomized controlled trial designed to evaluate the safety, effectiveness, and long-term outcomes of the DynamX Coronary Bioadaptor compared to a contemporary drug-eluting stent. Enrolling 2,400 patients, it is the largest randomized controlled trial to evaluate the drug-eluting bioadaptor system versus a contemporary drug-eluting stent.

The INFINITY-SWEDEHEART study confirms the safety and effectiveness of the DynamX coronary bioadaptor in a broad patient population representative of everyday clinical practice. More than 76% of this patient population presented with Acute Coronary Syndrome (ACS).

This study provides large-scale, real-world evidence on the performance of the DynamX Coronary Bioadaptor in a broad patient population. Its size and national registry integration enable evaluation of long-term outcomes and clinical effectiveness in routine clinical practice.

Primary non-inferiority endpoint met

DynamX
(N=1,189)
0 %
p-value <0.001
Difference: -0.41%
[-1.94%, 1.11%]
Resolute Onyx
(N=1,192)
0 %

Significant Reduction in TLF and Sustained Treatment Benefit After 6 Months

Favorable reduction in CVD, TV-MI, ID-TLR after 6 months

Furthermore, favorable outcomes for the Bioadaptor in the high-risk subgroup of acute coronary syndrome, and consistent benefit in prespecified subgroups were observed.

TLF in ACS: Significant Reduction and Sustained Treatment Benefit After 6 Months

TLF landmarked at 6 months in LAD lesions

TLF landmarked at 6 months in small
vessels (< 2.75 mm)

These results confirm the novel impact of the Bioadaptor in CAD treatment through its unique mechanism of action of restoring the hemodynamic modulation of a diseased artery.

Key findings:

INFINITY-SWEDEHEART is the largest and second RCT to confirm consistency of low and plateauing adverse event rates versus DES after the unlocking of the Bioadaptor at 6 months.

  • DynamX bioadaptor met the primary endpoint
  • Significant reduction and plateau in TLF (p=0.003) and TVF (p=0.008) from 6 to 12 months in prespecified landmark analyses, driven by reduction in all components, compared to DES
Study design:

The trial compares the DynamX Coronary Bioadaptor to a contemporary drug-eluting stent using a 1:1 randomized controlled design.

  • Interventional Clinical Trial
  • 2400 participants enrolled in Sweden
  • Ages 18 – 85 years
  • 1:1 randomization of eligible patients with DynamX : Resolute Onyx
  • Intervention Model: Parallel Assignment
  • Clinical follow up to 5 years
Primary endpoint(s):
  • Primary Device Oriented Clinical Endpoint is target lesion failure (TLF); a composite of cardiovascular death, target vessel myocardial infarction (TV-MI), or ischemia-driven target lesion revascularization (ID-TLR)
Powered secondary endpoints:
  • Landmark analysis of TLF from 6 months to End of Follow-up
  • Landmark analysis of TVF from 6 months to End of Follow-up

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Frequently asked questions about the INFINITY-SWEDEHEART trial and DynamX

One of the largest clinical trials evaluating an alternative to drug-eluting stents is the INFINITY-SWEDEHEART trial, which studied the DynamX coronary bioadaptor in 2,400 patients. This randomized controlled trial compared DynamX to a leading drug-eluting stent (Resolute Onyx™ DES) in a representative, clinically complex ischemic patient population, including those with acute coronary syndrome (ACS).

Yes. The INFINITY-SWEDEHEART trial was designed to reflect everyday clinical practice, not just controlled conditions.

The study included:

  • A broad patient population
  • High-risk patients (including ACS)
  • Multiple lesion types

The results provide strong real-world evidence that DynamX performs safely and effectively across a wide range of patients.

In the INFINITY-SWEDEHEART clinical trial of the DynamX Coronary Bioadaptor, the 6-month mark represents a critical turning point:

  • It is when the DynamX bioadaptor unlocks
  • Vessel motion and hemodynamic function begin to return
  • Clinical outcomes begin to diverge from drug-eluting stents

The INFINITY-SWEDEHEART trial specifically analyzed outcomes from 6 months onward to capture this effect.

Target Lesion Failure (TLF) is a composite measure that includes:

  • Cardiovascular death
  • Target vessel myocardial infarction (TV-MI)
  • Repeat procedures (revascularization)

In the INFINITY-SWEDEHEART trial:

  • DynamX achieved 2.35% TLF vs. 2.77% for DES at 12 months
  • Then demonstrated significant reductions in TLF after 6 months

Event rates in studies of patients who have undergone percutaneous coronary intervention (PCI) typically refer to major adverse coronary events or MACE.

With drug-eluting stents, multiple studies report a rising event rate over the five years after the procedure.

Plateauing event rates means that:

  • After a certain point (in this case, 6 months)
  • The number of new adverse events stops increasing significantly

In the INFINITY-SWEDEHEART trial:

  • DynamX showed flattening (plateauing) of event rates
  • Drug-eluting stents continued to accumulate events over time

The study evaluates clinical endpoints such as target lesion failure (TLF), major adverse cardiac events (MACE), and long-term patient outcomes, along with additional assessments of vessel function and performance.

PMN 2501 Rev A

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PMN 1777 Rev A