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Transplantation of cultured conjunctival cells for corneal epithelial stem cell deficiency

Autologous transplantation of mucosal epithelial cells cultured on amniotic membrane for corneal epithelial stem cell deficiency - Transplantation of cultured conjunctival cells for corneal epithelial stem cell deficiency

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTb030250605
Enrollment
3
Registered
2025-12-25
Start date
2025-12-25
Completion date
Unknown
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Corneal epithelial stem cell deficiency Corneal epithelial stem cell deficiency

Interventions

Cut out the uninjured part (about 2 mm x 5 mm) of the patient's conjunctival tissue in the ophthalmology surgery room of Itabashi Hospital, Nihon University School of Medicine. Transport the excised c

Sponsors

Yamagami Satoru
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Target Disease Patients with Corneal Epithelial Stem Cell Deficiency Syndrome Inclusion Criteria Patients who meet all of the following criteria are eligible: 1) Patients with Stage III corneal epithelial stem cell depletion syndrome (LSCD) as defined by the Working Group for the Development of Standards for the Use of Human (Autologous) Oral Mucosa-Derived Epithelial Cell Sheets of the Japanese Ophthalmological Society and the Japanese Corneal Transplant Society. 2) Men and women aged 20 years or older at the time of consent 3) Patients who have provided written informed consent

Exclusion criteria

Exclusion criteria: Exclusion Criteria Patients who meet any of the following criteria will not be enrolled in this study: 1) Pregnant or potentially pregnant patients, and breastfeeding patients. 2) Patients with infectious diseases (HBV, HCV, HIV, HTLV-1). 3) Patients with aqueous lacrimation (Schirmer test: 1 mm or less). 4) Patients who have undergone the following surgery on the recipient eye within the last 6 months: - Conjunctival sac formation - Amniotic membrane transplantation onto the sclera - Mitomycin treatment 5) Patients with obvious scarring or signs of inflammation at the harvest site, making harvesting impossible. 6) Patients who the attending physician deems inappropriate for participation due to other complications, etc.

Design outcomes

Primary

MeasureTime frame
After the postoperative observation period of 3 months, the safety will be evaluated. Presence or absence of transplanted cell sheet shedding, evaluation of predicted ocular complications, Evaluate all adverse events, including abnormal changes in laboratory test values.

Secondary

MeasureTime frame
Evaluation of effectiveness 1) Judgment of the condition of the eye surface 2) Visual acuity (corrected visual acuity) 3) Corneal opacity 4) Corneal neovascularization

Countries

Japan

Contacts

Public ContactSeiichi Yokoo

The University of Tokyo Hospital

syokoo-tky@umin.ac.jp+81-3-5800-9891

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026