NCT03943797

Brief Summary

Earlier protocol for cultivated oral mucosal epithelial transplantation (COMET) requires trypsin/EDTA to isolate epithelial cells from tissue, and uses murine 3T3 cells as feeder cells, which results in biosafety concern. This study uses collagenase instead of trypsin/EDTA to isolate epithelial cells, and does not use 3T3 cells co-culture, so as to make an animal ingredient-free cell culture product. The purpose of the study is to evaluate the feasibility of the new protocol of COMET in clinical use.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
8

participants targeted

Target at below P25 for phase_1

Timeline
Completed

Started Mar 2016

Longer than P75 for phase_1

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 1, 2016

Completed
3.2 years until next milestone

First Submitted

Initial submission to the registry

May 8, 2019

Completed
1 day until next milestone

First Posted

Study publicly available on registry

May 9, 2019

Completed
5.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2024

Completed
Last Updated

August 13, 2020

Status Verified

August 1, 2020

Enrollment Period

8.8 years

First QC Date

May 8, 2019

Last Update Submit

August 12, 2020

Conditions

Keywords

Oral mucosal epithelial cellsCorneaAmniotic membraneCollagenase

Outcome Measures

Primary Outcomes (1)

  • The proportion of study specific AE

    The tolerance and safety

    12 months

Study Arms (1)

Cultivated oral mucosal epithelial cell transplantation

EXPERIMENTAL

Cell therapy for treating severe limbal stem cell deficiency using cultivated autologous oral mucosal epithelial cells.

Biological: Cultivated oral mucosal epithelial cell transplantation

Interventions

Cultivated oral mucosal epithelial cell transplantation (COMET) will be used to treat severe limbal stem cell deficiency so as to restore the integrity of corneal surface

Cultivated oral mucosal epithelial cell transplantation

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Severe corneal epithelial deficiency
  • Having favorable prognosis potential
  • Normal of the intraocular pressure
  • Normal of the light perception for the optic nerve
  • No retinal diseases for the inflicted eyes
  • No severe dry eye

You may not qualify if:

  • Having unfavorable prognosis potential
  • Severe systemic disorders
  • Unable to use daily vision
  • Mentally retarded to execute permit on surgery
  • Pregnant woman

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Core Laboratory for Cell Therapy, Veterans General Hospital

Taipei, 112, Taiwan

RECRUITING

Related Publications (13)

  • Chen HC, Chen HL, Lai JY, Chen CC, Tsai YJ, Kuo MT, Chu PH, Sun CC, Chen JK, Ma DH. Persistence of transplanted oral mucosal epithelial cells in human cornea. Invest Ophthalmol Vis Sci. 2009 Oct;50(10):4660-8. doi: 10.1167/iovs.09-3377. Epub 2009 May 20.

  • Chen HC, Yeh LK, Tsai YJ, Lai CH, Chen CC, Lai JY, Sun CC, Chang G, Hwang TL, Chen JK, Ma DH. Expression of angiogenesis-related factors in human corneas after cultivated oral mucosal epithelial transplantation. Invest Ophthalmol Vis Sci. 2012 Aug 17;53(9):5615-23. doi: 10.1167/iovs.11-9293.

  • Inatomi T, Nakamura T, Koizumi N, Sotozono C, Yokoi N, Kinoshita S. Midterm results on ocular surface reconstruction using cultivated autologous oral mucosal epithelial transplantation. Am J Ophthalmol. 2006 Feb;141(2):267-275. doi: 10.1016/j.ajo.2005.09.003.

  • Inatomi T, Nakamura T, Kojyo M, Koizumi N, Sotozono C, Kinoshita S. Ocular surface reconstruction with combination of cultivated autologous oral mucosal epithelial transplantation and penetrating keratoplasty. Am J Ophthalmol. 2006 Nov;142(5):757-64. doi: 10.1016/j.ajo.2006.06.004. Epub 2006 Sep 20.

  • Li W, Sabater AL, Chen YT, Hayashida Y, Chen SY, He H, Tseng SC. A novel method of isolation, preservation, and expansion of human corneal endothelial cells. Invest Ophthalmol Vis Sci. 2007 Feb;48(2):614-20. doi: 10.1167/iovs.06-1126.

  • Ma DH, Kuo MT, Tsai YJ, Chen HC, Chen XL, Wang SF, Li L, Hsiao CH, Lin KK. Transplantation of cultivated oral mucosal epithelial cells for severe corneal burn. Eye (Lond). 2009 Jun;23(6):1442-50. doi: 10.1038/eye.2009.60. Epub 2009 Apr 17.

  • Nakamura T, Inatomi T, Sotozono C, Amemiya T, Kanamura N, Kinoshita S. Transplantation of cultivated autologous oral mucosal epithelial cells in patients with severe ocular surface disorders. Br J Ophthalmol. 2004 Oct;88(10):1280-4. doi: 10.1136/bjo.2003.038497.

  • Nakamura T, Takeda K, Inatomi T, Sotozono C, Kinoshita S. Long-term results of autologous cultivated oral mucosal epithelial transplantation in the scar phase of severe ocular surface disorders. Br J Ophthalmol. 2011 Jul;95(7):942-6. doi: 10.1136/bjo.2010.188714. Epub 2010 Nov 19.

  • Petsoglou C, Balaggan KS, Dart JK, Bunce C, Xing W, Ali RR, Tuft SJ. Subconjunctival bevacizumab induces regression of corneal neovascularisation: a pilot randomised placebo-controlled double-masked trial. Br J Ophthalmol. 2013 Jan;97(1):28-32. doi: 10.1136/bjophthalmol-2012-302137. Epub 2012 Oct 20.

  • Satake Y, Higa K, Tsubota K, Shimazaki J. Long-term outcome of cultivated oral mucosal epithelial sheet transplantation in treatment of total limbal stem cell deficiency. Ophthalmology. 2011 Aug;118(8):1524-30. doi: 10.1016/j.ophtha.2011.01.039. Epub 2011 May 14.

  • Takeda K, Nakamura T, Inatomi T, Sotozono C, Watanabe A, Kinoshita S. Ocular surface reconstruction using the combination of autologous cultivated oral mucosal epithelial transplantation and eyelid surgery for severe ocular surface disease. Am J Ophthalmol. 2011 Aug;152(2):195-201.e1. doi: 10.1016/j.ajo.2011.01.046. Epub 2011 Jun 8.

  • Hsueh YJ, Huang SF, Lai JY, Ma SC, Chen HC, Wu SE, Wang TK, Sun CC, Ma KS, Chen JK, Lai CH, Ma DH. Preservation of epithelial progenitor cells from collagenase-digested oral mucosa during ex vivo cultivation. Sci Rep. 2016 Nov 8;6:36266. doi: 10.1038/srep36266.

  • Ma DH, Hsueh YJ, Ma KS, Tsai YJ, Huang SF, Chen HC, Sun CC, Kuo MT, Chao AS, Lai JY. Long-term survival of cultivated oral mucosal epithelial cells in human cornea: generating cell sheets using an animal product-free culture protocol. Stem Cell Res Ther. 2021 Oct 7;12(1):524. doi: 10.1186/s13287-021-02564-7.

MeSH Terms

Conditions

Limbal Stem Cell DeficiencyCorneal Diseases

Condition Hierarchy (Ancestors)

Eye Diseases

Study Officials

  • David Hui-Kang Ma, MD, PhD

    Chang Gung Memorial Hospital

    PRINCIPAL INVESTIGATOR

Central Study Contacts

David Hui-Kang Ma, MD, PhD

CONTACT

Zheng Hua Huang, MSc

CONTACT

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Attending Physician

Study Record Dates

First Submitted

May 8, 2019

First Posted

May 9, 2019

Study Start

March 1, 2016

Primary Completion

December 31, 2024

Study Completion

December 31, 2024

Last Updated

August 13, 2020

Record last verified: 2020-08

Data Sharing

IPD Sharing
Will not share

Locations