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RecruitingNCT07884318Updated Oct 20, 2026

Long-term Safety Study Following to JRM-001 Treatment in Pediatric Patients With Congenital Heart Disease

An observational study in Single Ventricle and Hypoplastic Left Heart Syndrome (HLHS), sponsored by Metcela Inc.. Recruiting at 1 site in Japan. Per ClinicalTrials.gov, last updated 2026-10-20.

Sponsored by Metcela Inc. · Observational

From the registry’s dates

  • Started Sep 2026; still recruiting 1 month later.
Updated Oct 20, 2026Newly registeredGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
40
Sex
All
01

Study summary

The objective of this observational study is to investigate the long-term safety of autologous cardiac stem cells (JRM-001) administered to patients with single ventricle physiology. This study will conduct a one-year safety follow-up of participants in "Efficacy and safety study of autologous cardiac stem cells (JRM-001) treated after reconstructive surgery in pediatric patients with congenital heart disease".

02

Conditions studied

  • Single Ventricle
  • Hypoplastic Left Heart Syndrome (HLHS)

Keywords

  • cardiac stem cells
  • autologous cell therapy
  • congenital heart diseases
03

In context

Univentricular Heart

108 studies on the registry are indexed under Univentricular Heart; 23 are open to participants now.

This study's planned enrollment of 40 is below the median of 48 across 45 observational studies indexed under Univentricular Heart.

Browse Univentricular Heart studies →

Lead sponsor

Metcela Inc. is the lead sponsor of 2 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Participants in "Efficacy and safety study of autologous cardiac stem cells (JRM- 001) treated after reconstructive surgery in pediatric patients with congenital heart disease"

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients who participated in "Efficacy and safety study of autologous cardiac stem cells (JRM-001) treated after reconstructive surgery in pediatric patients with congenital heart disease" and meet the following criteria;
  • JRM-001 administration group: received JRM-001 investigational product after catheter examination
  • Non-administered group: underwent cardiac catheter examiniation only

Exclusion criteria

Exclusion Criteria:

  • Patients who is difficult to visit the clinical trial site
  • Patients who is difficult to obtain the provision of medical information from clinical institute to which the patient is transferred
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
40 participants (estimated)
Patient registry
No

Groups and cohorts

  • JRM-001 administration Group

    Patients who were administered JRM-001 in the study "Efficacy and safety study of autologous cardiac stem cells (JRM-001) treated after reconstructive surgery in pediatric patients with congenital heart disease".

  • Non-administeration Group

    Patients who were not administered JRM-001 in the study "Efficacy and safety study of autologous cardiac stem cells (JRM-001) treated after reconstructive surgery in pediatric patients with congenital heart disease".

06

What researchers measure

Primary outcomes

  1. Adverse events or serious adverse events (SAE)

    Any adverse events or serious adverse events (SAE) occurred till months 12 of this study (corresponding to 24 months after JRM-001 administration)

    Time frame: From enrollment to the end of treatment at 12 months

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Study locations

1 of 1 sites recruiting
  • Okayama University Hospital
    Okayama, Okayama-ken 700-8558, Japan
    Recruiting
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Registered
First appeared on the registry. No changes since
Oct 20, 2026
Show all 1 update
  1. Oct 20, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

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Registry details

Key details

Study ID
NCT07884318
Lead sponsor
Metcela Inc.
Responsible party
Sponsor
First posted
Oct 20, 2026
Start date
Sep 1, 2026
Primary completion
Feb 28, 2030 (estimated)
Completion
Feb 28, 2030 (estimated)
Last update
Oct 20, 2026

Study contacts

Clinical Trial Inquiry Contact
Contact
info@j-rm.com
81-44-201-1376

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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