Heart failure & cardiomyopathies

Stem-Cell–Derived Biologic Ventricular Assist Tissue in Heart Failure

N Engl J MedPublished Phase 1-2 open-label study

Authors' conclusion

In this interim analysis, cardiac remuscularization with BioVAT was associated with an increase in the target heart-wall thickness, left ventricular ejection fraction, and KCCQ-OSS at 3 months; all the patients had at least one adverse event.

Study context

Population
Patients with HF, LVEF ≤35% and ≥1 hypokinetic or dyskinetic LV segment12 with 3-month interim follow-up
Participants
20 patients
Primary endpoint
Change from baseline in target heart-wall thickness, LVEF and KCCQ-OSS
Follow-up
3 months
Methodological detailssingle-group, prespecified 3-month interim analysis
  • Single-group
  • Prespecified 3-month interim analysis

Primary result

As reported in the abstract

Change from baseline (safe maximal dose, 20 units)
Target-wall thickness, least-squares mean increase 4.5 mm (90% CI 3.7 to 5.4)
P<0.001
LVEF increase 3.9 percentage points (90% CI 0.9 to 6.8)
P = 0.04
Kansas City Cardiomyopathy Questionnaire-Overall Summary Score (KCCQ-OSS) increase 6.7 points (90% CI 1.0 to 12.5)
P = 0.06

Safety

Heart transplantation
1
Immunosuppression discontinued (LV assist device 2, renal failure 1, urothelial carcinoma 1)
4
All patients had at least one adverse event

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

Stem-Cell–Derived Biologic Ventricular Assist Tissue in Heart Failure. N Engl J Med. Published 28 May 2026. doi:10.1056/nejmoa2513525

Composed by AI from the published abstract and checked against it. How Briefs are made →

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