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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01765244
Other study ID # CAH/Ulc/2010
Secondary ID 2010-024290-40
Status Completed
Phase Phase 1/Phase 2
First received
Last updated
Start date January 17, 2014
Est. completion date January 14, 2021

Study information

Verified date January 2021
Source Andalusian Network for Design and Translation of Advanced Therapies
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a prospective, phase I-II, randomised, open-label clinical trial that will evaluate the safety and feasibility, as well as clinical efficacy evidence, of a bioengineered anterior corneal substitute in adults with severe trophic corneal ulcers. This model of human anterior allogeneic cornea will provide an alternative approach in cases where human donor keratoplasty is not an option.


Description:

This is a phase I-II, randomised, controlled, open-label clinical trial, currently ongoing in eleven Spanish hospitals, to evaluate the safety and feasibility, as well as clinical efficacy evidence, of a bioengineered human anterior corneal substitute in adults with severe trophic corneal ulcers refractory to conventional treatment, or with sequelae of previous ulcers. In the initial phase of the trial (n=5), patients were sequentially recruited, with a safety period of 45 days, receiving the bioengineered corneal graft. In the second phase of the trial (currently ongoing), subjects are block randomised (2:1) to receive either the corneal graft (n=10), or amniotic membrane (n=5), as the control treatment. Adverse events, implant status, infection signs and induced neovascularization are evaluated as determinants of safety and feasibility of the bioengineered graft (main outcomes). Study endpoints are measured along a follow-up period of 24 months, including 27 post-implant assessment visits according to a decreasing frequency. Intention to treat, and per protocol, and safety analysis will be performed.


Recruitment information / eligibility

Status Completed
Enrollment 16
Est. completion date January 14, 2021
Est. primary completion date January 14, 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Man or woman aged=18, with no upper age limit. - Patients that give their informed consent for study participation. - Stage 3 Mackie corneal ulcers that do not respond to conventional medical treatment, or patients having undergone previous stage 3 Mackie corneal ulcers,33 currently suffering sequelae such as stromal fibrosis or corneal thinning, having no effective therapeutic alternative. - Stromal involvement, not reaching the Descemet membrane. Central or peripheral localization. - Minimum duration of the disease causing the corneal ulcer: 6 weeks. - No active ocular infection. - Patients with normal laboratory parameters as defined by: Leukocytes=3000 cells/µL; Neutrophils=1500 cells/µL; Platelets=100 billion/L; AST/ALT=1.5 ULN; Creatinine=1.5 mg/dL. Exclusion Criteria: - Absence of stromal involvement. - Good response to standard medical treatments for corneal disease in less than 3 to 5 weeks. - Bullous keratopathy or other endothelial decompensations. - Active ocular infection. - Positive serology to HBV, HCV, HIV or any other pathology that may interfere with correct patient follow-up. - Pregnant or breast-feeding women or childbearing-age women that do not consent the use of contraceptive methods approved in the protocol. - Medical history of active neoplasia within the past 5 years. Participation in other clinical trials in 3 months previous to inclusion, or in the previous 5 years for trials with advanced therapies.

Study Design


Related Conditions & MeSH terms

  • Corneal Ulcer
  • Sequelae of Previous Trophic Corneal Ulcers
  • Severe Trophic Corneal Ulcers Refractory to Conventional Treatment
  • Ulcer

Intervention

Drug:
Anterior lamellar nanostructured artificial human cornea.
Implantation of an anterior lamellar nanostructured artificial human cornea with allogeneic cells from dead donors embedded in a fibrin-agarose scaffold
Other:
Amniotic membrane transplantation
Implantation of an amniotic membrane graft to cover the corneal scarring using the mixed graft/patch technique.

Locations

Country Name City State
Spain Hospital San Juan de Dios Bormujos
Spain University Hospital Puerta del Mar Cádiz
Spain Hospital la Arruzafa Córdoba
Spain Hospital Universitario Reina Sofía Córdoba
Spain University Hospital San Cecilio Granada
Spain University Hospital Virgen de las Nieves Granada
Spain Marina Rodriguez Calvo-Mora Málaga
Spain Hospital Costa del Sol Marbella
Spain Hospital Nuestra Señora de Valme Sevilla
Spain University Hospital Virgen de Rocío Sevilla
Spain University Hospital Virgen Macarena Sevilla

Sponsors (2)

Lead Sponsor Collaborator
Andalusian Initiative for Advanced Therapies - Fundación Pública Andaluza Progreso y Salud Iniciativa Andaluza en Terapias Avanzadas

Country where clinical trial is conducted

Spain, 

References & Publications (1)

González-Andrades M, Mata R, González-Gallardo MDC, Medialdea S, Arias-Santiago S, Martínez-Atienza J, Ruiz-García A, Pérez-Fajardo L, Lizana-Moreno A, Garzón I, Campos A, Alaminos M, Carmona G, Cuende N. A study protocol for a multicentre randomised clinical trial evaluating the safety and feasibility of a bioengineered human allogeneic nanostructured anterior cornea in patients with advanced corneal trophic ulcers refractory to conventional treatment. BMJ Open. 2017 Sep 24;7(9):e016487. doi: 10.1136/bmjopen-2017-016487. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Adverse events (and serious adverse events) causally related to experimental treatment. 24 months
Primary Implant status (integrity, detachment and reabsorption) 24 months
Primary Local, regional or systemic infections related with the implant 24 months
Primary Induced corneal neovascularization 24 months
Secondary Ulcer persistency or relapse and corneal stromal repair 24 months
Secondary Visual acuity 24 months
Secondary Corneal transparency 24 months
Secondary Tear function (TBUT and Schirmer) 24 months
Secondary Quality of life (EQ-5) 24 months
Secondary Induced chronic ocular complications 24 months
Secondary In vivo confocal microscopy (IVCM) analysis of the grafted bioengineered cornea (and AM) 24 months