ClinicalTrials.gg
WithdrawnNCT03812341Updated May 27, 2020

SINGLE PATIENT EXPANDED ACCESS OF A PROSPECTIVE, MULTICENTER CLINICAL TRIAL DESIGNED TO EVALUATE THE SAFETY AND PROBABLE BENEFIT OF THE KERAKLEAR NON-PENETRATING KERATOPROSTHESIS IN SUBJECTS WITH CORNEAL OPACITY WITH POOR PROGNOSIS FOR CORNEAL TRANSPLANT

An interventional study of Experimental in CORNEAL OPACITY WITH POOR PROGNOSIS FOR CORNEAL TRANSPLANT, sponsored by University of California, Irvine. Withdrawn at 1 site in United States. Open to female participants aged 88 Years to 88 Years. Per ClinicalTrials.gov, last updated 2020-05-27.

Sponsored by University of California, Irvine · Not applicable, Interventional, and Treatment

Why this study was withdrawn
No enrollment

From the registry’s dates

  • Registered 5 months after the study started (first participant enrolled Aug 2018, registered Jan 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
88 Years to 88 Years
Sex
Female
01

Study summary

This is for a "Single Patient Expanded Access" of an on-going study (IRB#2017-3526). In the on-going study, the maximum number of subject will be 35 subjects (35 eyes) will be implanted with the KeraKlear device and will be followed for one year. However, this expanded access is for single patient use below is a description of patient condition and circumstances necessitating treatment:

88 year old female with 2 previous failed corneal transplants, had significant scarring and mild edema, surface well epithelialized, has potential for 10 letters of improvement in visual acuity. Patient is high risk for recurrent corneal rejection and failure and therefore would not be a candidate for standard corneal transplant. She would potentially do well with a partial thickness artificial cornea such as the KeraKlear.

Read the detailed description

For this "Single Patient Expanded Access" the research procedures will be based on the Master Protocol Version #1.2 dated 18Dec2017, with one foreseen deviation. Section 7.1 Page 27 under Inclusion Criteria #1 Male or female from 22 years to 80 years of age at screening study visit. This patient is 88 years old as of the submission of this Protocol Narrative to the IRB.

Postoperatively, subject will be examined at (with window size in parentheses):

  • 1 Day (+2 days)
  • 1 Week (7±2 days)
  • 1 Month (30±5 days)
  • 2 Months (60±7 days)
  • 3 Months (90±7 days)
  • 4 Months (120±10 days)
  • 6 Months (180±10 days)
  • 9 Months (270±20 days)
  • 12 Months (360±20 days)
02

Conditions studied

  • CORNEAL OPACITY WITH POOR PROGNOSIS FOR CORNEAL TRANSPLANT

Browse trials for

03

In context

Corneal Opacity

37 studies on the registry are indexed under Corneal Opacity; 5 are open to participants now.

Browse Corneal Opacity studies →

Lead sponsor

University of California, Irvine is the lead sponsor of 476 studies on the registry; 98 are open to participants now.

Of its 41 completed or terminated interventional studies of FDA-regulated products, 30 (73%) have results posted.

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

04

Who can participate

Ages eligible
88 Years to 88 Years
Sexes eligible
Female
Accepts healthy volunteers
No

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

  • Corneal blindness where cornea transplantation is necessary but is expected to be unsuccessful due to severe limbal stem cell deficiency (LSCD) associated with aniridia or due to multiple (two or more) failed cornea transplantation surgeries and spontaneous visual improvement without surgical intervention is not expected or probable.
  • Best Corrected Distance Visual Acuity (Snellen) which is equal or worse than 20/200 in the study eye (but at least light perception with projection)
  • Estimated visual potential of the study eye is greater than or equal to at least two lines visual improvement of BCDVA of current vision in the study eye.

Exclusion criteria

Exclusion Criteria:

  • Visual Acuity of No Light Perception (NLP) in the study eye
  • The patient is monocular or the non-study eye has Best Corrected Distance Visual Acuity (Snellen) of worse than 20/160 due to an ocular condition other than severe aniridic limbal stem cell deficiency or due to multiple (two or more) failed cornea transplantation surgeries.
  • Suitable for standard PK with donor tissue in the study eye.
  • History of severe dry eye syndrome or a Schirmer test with results of less than 3mm after 5 minutes of testing with the use of topical anesthetic in either eye.
  • Active or history of an auto-immune disease (e.g. Rheumatoid Arthritis, Ocular Cicatricial Pemphigoid, Lupus, Steven's Johnson Syndrome, atopic keratoconjunctivitis, etc.).
  • On medications that may affect wound healing, such as antimetabolites or other chemotherapeutic agents.
  • History of posterior segment eye disease in either eye (including macular degeneration, optic neuropathy, posterior uveitis) which is expected to limit the visual improvement to less than two lines of vision.
  • History of retinal surgery in the fellow eye (including retinal detachment repair, intravitreal injection etc.).
  • History of retinal surgery in the study eye (including retinal detachment repair, intravitreal injection, etc.) unless the vision is at least light perception with projection in four field quadrants and the macula is attached (if there is no view of the retina, an ultrasound must show the macula is attached).
  • History of uncontrolled glaucoma in either eye (IOP has been measured above 25 mmHg at any time in the last 6 months).
  • Current use of beta blocker eye drops (e.g. timolol, levobunolol, etc.).
  • Vertical cup-to-disc (C:D) ratio greater than or equal to 0.8 in either eye (if able to visible through corneal opacity). If not visible, patient is not to be excluded.
  • Limited visual potential (patient does not have the ability to improve a minimum of two lines of vision of BCDVA by history).
  • History of amblyopia in the study eye limiting visual potential.
  • If the patient has had a corneal transplant, corneal transplantation surgery was performed less than 2 years ago.
  • Anticipated need for surgery on the study eye during the course of the study (including cataract surgery).
  • Aphakia in the study eye.
  • Active ocular infection in either eye.
  • Hypotony in the study eye (IOP \< 6mmHg).
  • History of herpetic ocular infection in the study eye.
  • Corneal thickness less than 400 microns in any region of the pachymetry map.
  • Inability to protect the operated eye from trauma.
  • Females who are pregnant, lactating, or unwilling to use adequate for t the duration of the study.
  • Patient is currently taking Sumatriptan (Imitrex) and unable to discontinue during the study.

For this "Single Patient Expanded Access" the research procedures will be based on the Master Protocol Version #1.2 dated 18Dec2017, with one foreseen deviation. Section 7.1 Page 27 under Inclusion Criteria #1 Male or female from 22 years to 80 years of age at screening study visit. This patient is 88 years old.

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Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Interventions

  • OtherExperimental

    KeraKlear Non-Penetrating Keratoprosthesis The KeraKlear is a flexible non-penetrating artificial cornea designed to be implanted through small corneal incisions in subjects with corneal opacity

06

What researchers measure

Primary outcomes

  1. 1.Improvement in BCDVA compared to baseline [ Time Frame: Baseline, Month 1, Month 2, Month 3, Month 4, Month 6, Month 9 and Month 12 ]

    Best Corrected Distance Visual Acuity (BCDVA) will be measured in the study eye. An ETDRS visual acuity chart will be used to measure BCDVA at baseline, Month 1, Month 2, Month 3, Month 4, Month 6, Month 9, and Month 12.

    Time frame: 1 year

07

Study locations

1 site
  • University of California Irvine
    Irvine, California 92697, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Aug 2018 to primary completion in Aug 2019, 11 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 18, 2019
First posted
Jan 23, 2019
StartActual
Aug 10, 2018
Primary completionActual
Aug 9, 2019
CompletionActual
Aug 9, 2019
Last update
May 27, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 27, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03812341
Responsible party
Sponsor
First posted
Jan 23, 2019
Start date
Aug 10, 2018
Primary completion
Aug 9, 2019
Completion
Aug 9, 2019
Last update
May 27, 2020

Oversight

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

Not currently enrolling

This study is withdrawn, as verified in May 2020. You cannot join it, but the record below documents what was studied.

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