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Lomecel-B

Phase 2

Hypoplastic Left Heart Syndrome | Monoclonal antibody | Cardiovascular |Longeveron Inc.|Last Updated: Jun 25, 2025

Target and mechanism

ModalityMonoclonal antibody

Also known as Lomecel-B medicinal signaling cells

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindNO_TREATMENT_CONTROLLEDDMC
Total Trials1
Total Enrollment40

FDA Designations

FAST_TRACKRMATORPHAN_DRUGRARE_PEDIATRIC_DISEASE

Clinical trial landscape

Lomecel-B · 1 trial · 1 indication

Phase 2 1
NCT04925024Evaluation of Lomecel-B™ Injection in Patients With Hypoplastic Left Heart Syndrome (HLHS): A Phase IIb Clinical Trial.Hypoplastic Left Heart Syndrome
ACTIVE NOT_RECRUITING40 Analytics
PHASE2ACTIVE NOT_RECRUITING
Evaluation of Lomecel-B™ Injection in Patients With Hypoplastic Left Heart Syndrome (HLHS): A Phase IIb Clinical Trial.
Hypoplastic Left Heart SyndromeUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in right ventricular ejection fraction (RVEF)
Baseline, 12 Months

Efficacy will be reported as change in right ventricular ejection fraction (RVEF) assessed as a percentage and will be measured via cardiac magnetic resonance (CMR) imaging.

Secondary Endpoints

Change in right ventricular ejection fraction (RVEF)
Baseline, 6 Months
Change in right ventricular mass index at diastole
Baseline, 12 Months
Change in right ventricular end-diastolic volume index (RVEDVI)
Baseline, 12 Months
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Lomecel B GroupEXPERIMENTALParticipants randomized to receive Lomecel-B injections during their Stage II palliation.
No Study Intervention Control GroupNO_INTERVENTIONParticipants randomized to receive no study intervention during their Stage II palliation.

Interventions

NameTypeDescription
Lomecel-B medicinal signaling cellsBIOLOGICALA single administration of Lomecel-B will be performed via 6-10 intramyocardial injections into the right ventricle during the participant's standard of care stage II palliation. Dosing is based on body weight. Each patient will be given 2.5 x 10\^5 cells per kg of body weight. The entire dose of the cells will be roughly 600 microliters.
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Eligibility Criteria

Age RangeN/A to 12 Months
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion: All participants must have HLHS (includes all types) requiring Stage II palliation (Glenn or Hemi-Fontan operation). Exclusion: 1. Requirement for ongoing mechanical circulatory support immediately prior to Stage II palliation within 5 days 2. Need for concomitant surgery for aortic co...

Countries:United States
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