ClinicalTrials.gg
Status unknownNCT03856645RUBYUpdated Apr 21, 2022

OKG-0301 for the Treatment of Acute Adenoviral Conjunctivitis

A Phase 2 interventional study of OKG-0301 in Adenoviral Conjunctivitis, sponsored by Okogen. Status unknown at 6 sites in Australia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-04-21.

Sponsored by Okogen · Phase 2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Apr 2022), so the status shown — last known as Active, not recruiting — may be out of date.
Phase
Phase 2
Study type
Interventional
Enrollment
219
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Acute adenoviral conjunctivitis is a highly contagious, widespread endemic disease associated with frequent outbreaks, significant patient discomfort, lost productivity, and in some cases permanent visual compromise from long-term immune mediated sequelae. OKG-0301 is a novel ophthalmic solution with a potent ribonuclease that has broad-spectrum antiviral properties relevant for the treatment of acute adenoviral conjunctivitis. This randomized, double masked, multi-center Phase 2 study is being conducted entirely within Australia and is designed to support the safety and efficacy of OKG-0301 for the treatment of acute adenoviral conjunctivitis. The study intends to show superiority of OKG-0301 Ophthalmic Solution compared to vehicle for the primary efficacy endpoint of mean change from baseline in viral titre in patients with acute adenoviral conjunctivitis. Secondary efficacy endpoints including adenoviral eradication, clinical cure of acute adenoviral conjunctivitis, subepithelial infiltrates, other clinical signs and symptoms, and rate of cross-over infection to the other eye will also be assessed. Safety will also be evaluated.

02

Conditions studied

  • Adenoviral Conjunctivitis

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03

In context

Conjunctivitis

85 studies on the registry are indexed under Conjunctivitis; 5 are open to participants now.

This study's planned enrollment of 219 is above the median of 156 across 63 interventional studies indexed under Conjunctivitis.

Browse Conjunctivitis studies →

Lead sponsor

This is the only study on the registry with Okogen as lead sponsor.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
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

Each patient MUST:

  1. Be willing and able to provide either written, or if the patient is not able to read, provide consent as stipulated by local laws and Human Research Ethics Committee (HREC) guidelines.
  2. Be willing and able to follow all instructions and attend all study visits.
  3. Have a clinical diagnosis of suspected acute adenoviral conjunctivitis in at least 1 eye and the presence of both of the following minimal clinical signs in that same eye:

    • Bulbar conjunctival redness: a minimum grade of '1' on 0-3 scale
    • Watery ocular discharge: a minimum grade of '1' on a 0-3 scale
  4. Patient reported presence of signs and symptoms consistent with adenoviral conjunctivitis equal to or less than 3 days in same eye prior to Visit 1.
  5. Have a positive AdenoPlus® test at Visit 1 in the same eye that meets the minimum 1+ grade for bulbar conjunctival redness and watery ocular discharge.
  6. Be willing to discontinue contact lens wear for the duration of the study.

Exclusion criteria

Exclusion Criteria:

Each patient MUST NOT:

  1. Have known sensitivity or poor tolerance to any component of the study medications or diagnostics.
  2. Have a history of ocular surgical intervention or trauma within 12 weeks prior to Visit 1 or planned for the period of the study.
  3. Have presence of any active ocular inflammation (e.g., uveitis, allergic conjunctivitis, ocular rosacea, or iritis), other than acute adenoviral conjunctivitis.
  4. Have clinical signs or presence of an ocular infection other than acute adenoviral conjunctivitis (e.g., bacterial, fungal or other ocular viral infection, such as herpes).
  5. Have the presence of corneal subepithelial infiltrates at baseline.
  6. Have a history of recurrent corneal erosion syndrome, ulcerative keratitis or dry eye, including meibomian gland dysfunction and other ocular surface diseases.
  7. Have presence of blepharitis, lid abnormality, significant inflammation of the lid margin, or ptosis.
  8. Have lacrimal duct obstruction in either eye.
  9. Have presence of any other findings during the slit lamp exam that may interfere with study parameters or otherwise confound the data as determined by the investigator
  10. Have any clinically significant retinal or optic nerve findings (as observed in the non-dilated fundus exam) or prior diagnoses in either eye that may interfere with study parameters or otherwise confound the data as determined by the investigator).
  11. Have used any topical ocular or systemic anti-viral or topical ocular or systemic within 7 days of enrollment and do not plan to start any topical ocular or systemic anti-viral during study duration. Inhaled, intranasal, and topical dermatologic steroids (except on the face) are allowed during the study.
  12. Initiate or continue the use of warm or cold compresses for the duration of the trial.
  13. Have used any topical ophthalmic solutions, including tear substitutes and diagnostics, within 2 hours of Visit 1 and be unable to discontinue all topical ophthalmic solutions (including diagnostics, except as required by this protocol and antibiotics) for the duration of the study. In addition, if the patient has used an artificial tear or other topical ophthalmic formulated in a hydrogel within the past 72 hours.
  14. Be currently pregnant, nursing, or planning a pregnancy; or be a woman that has a positive pregnancy test.
  15. Have any uncontrolled (not on a stable regimen for the past 30 days) systemic disease or debilitating disease (e.g., cardiovascular disease, hypertension, diabetes, or cystic fibrosis) or taking medications known to impact the ocular surface and/or tear film.
  16. Have a planned overnight hospitalization during the period of the study.
  17. Have any uncontrolled (not on a stable regimen for the past 30 days) disease or taking medications known to impact the ocular surface and/or tear film.
  18. Have prior (within 30 days of beginning study treatment) or anticipated concurrent use of an drug or device.
  19. Have a condition or a situation which, in the investigator's opinion, may put the patient at increased risk, confound study data, or interfere significantly with the patient's study participation.
  20. Be unlikely to follow study instructions or to complete all required study visits or has a condition or situation that in the investigator's opinion, may put the patient at significant risk, may confound the study results, or may interfere significantly with the patient's participation in the study
Terms in these criteria, in plain language(5)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
219 participants (estimated)

Study arms

  • Experimental
    OKG-0301 0.012% w/v

    Drug: OKG-0301

  • Experimental
    OKG-0301 0.03% w/v

    Drug: OKG-0301

  • Placebo comparator
    Vehicle Control

    Drug: OKG-0301

Interventions

  • DrugOKG-0301

    OKG-0301 is an experimental ophthalmic antiviral and immunomodulatory therapeutic

06

What researchers measure

Primary outcomes

  1. Mean change from baseline in viral titre levels in the study eye

    PFU

    Time frame: Day 7

Secondary outcomes

  1. Clinical Cure as Measured by the Absence of Bulbar Conjunctival Injection

    Clinical cure of acute adenoviral conjunctivitis as measured by the absence (score = 0) of bulbar conjunctival redness (graded using the validated Ora Calibra Scale 16.2: Bulbar Conjunctival Redness Grading Scale)

    Time frame: Day 4, 7 and 14

  2. Clinical Cure as Measured by the Absence of Watery Conjunctival Discharge

    Clinical cure of acute adenoviral conjunctivitis as measured by the absence (score = 0) of watery conjunctival discharge (graded on a scale of 0-3 based on severity, developed specifically for this trial)

    Time frame: Day 4, 7 and 14

  3. Adenoviral eradication (CC-IFA)

    Adenoviral eradication is defined as negative CC-IFA. CC-IFA will be conducted using conjunctival swab samples collected at each visit to determine the presence or absence of adenovirus.

    Time frame: Day 4, 7 and 14

  4. Adenoviral eradication (PFU)

    Adenoviral eradication is defined as zero plaques in cultures of ocular samples. PFU will be conducted using conjunctival swab samples collected at each visit to determine the presence or absence of adenovirus.

    Time frame: Day 4, 7 and 14

  5. Severity of subepithelial infiltrates

    Evaluation of SEIs in study eye, assessed under slit lamp exam with Investigator grading on a 0-3 semi-quantitative scale (developed specifically for this study).

    Time frame: Day 4, 7 and 14

  6. The rate of cross-over infection

    Clinical signs in contra-lateral eye that initially presented with no signs or symptoms of adenoviral conjunctivitis

    Time frame: Day 4, 7 and 14

07

Study locations

6 sites
  • Albury Eye Clinic
    Albury, New South Wales 2640, Australia
  • Sydney Eye Hospital
    Sydney, New South Wales 2000, Australia
  • The Royal Adelaide Hospital
    Adelaide, South Australia 5000, Australia
  • Hobart Eye Surgeons
    Hobart, Tasmania 7000, Australia
  • The Royal Victorian Eye and Ear Hospital
    Melbourne E., Victoria 3002, Australia
  • Lions Eye Institute Day Surgery Centre
    Nedlands, Western Australia 6009, Australia
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 21, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03856645
Lead sponsor
Okogen
Responsible party
Sponsor
First posted
Feb 27, 2019
Start date
Feb 11, 2019
Primary completion
Jun 30, 2022 (estimated)
Completion
Jun 30, 2022 (estimated)
Last update
Apr 21, 2022

Oversight

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

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This study is status unknown, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.

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