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SEER-3: A Phase 3, Multi-Center, Randomized, Parallel, Double Masked, Placebo-Controlled Clinical Study to Assess the Safety and Efficacy of 0.1% RGN-259 Ophthalmic Solution for the Treatment of Neurotrophic Keratopathy
EU CTIS ID: 2022-502697-16-00
What this study is testing
To compare the safety and efficacy of RGN-259 to placebo for the treatment of Neurotrophic Keratopathy (NK)
- Therapeutic confirmatory (Phase III)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- Be male or female of any race, at least 18 years of age at Visit 1
- Male subjects must agree to use an adequate method of contraception
- Have provided written informed consent
- Be able and willing to follow instructions, including participation in all study assessments and visits
- At the time of Visit 1, have documentation or observation of a Persistent Epithelial Defect (PED) in one or both eyes, defined as a corneal epithelial defect that has not resolved after 1 week of conventional, treatment using non-preserved ocular lubricants, non-preserved topical ophthalmic antibiotics, oral doxycycline, patching, amniotic membrane, serum tears, and/or therapeutic contact lenses. Note that re-screened subjects who failed conventional treatment needs to go through 1 week of conventional treatment again right before Visit 1
- Have stage 2 or 3 neurotrophic keratopathy (Mackie Classification) in at least one eye of which the longest dimension (length or width) of the defect measures a minimum length of 1 mm (study eye) and which is confirmed by the Investigator not to be simply superficial punctate keratitis, at Visit 1
You likely can't join if
- Have any condition that, in the opinion of the Investigator, would interfere with the subject’s ability to complete the study, would interfere with the interpretation of safety or efficacy, or would present an undue risk to the subject. In cases of uncertainty, the Investigator should contact the medical monitor for clarification
- Have received Botox® injection to induce blepharoptosis in the study eye within 90 days prior to Visit 1
- Have used contact lenses (for therapeutic or refractive correction) in the study eye within 14 days prior to Visit 1, or anticipate use of contact lenses during the study period. Note that consented subjects will be instructed to discontinue use of contact lenses for the study eye throughout the study
- Have used OxervateTM in the study eye within the past 2 months
- Anticipate use of serum tears in the study eye during the study period. Note that use of preservative free artificial tears for at least two weeks at the time of screening may continue throughout the study at the discretion of the Investigator
- Have a presence or history of any ocular or systemic disorder or condition that might hinder the efficacy of the study treatment or its evaluation, could possibly interfere with the interpretation of study results, or could be judged by the Investigator to be incompatible with the study visit schedule or conduct (eg, progressive or degenerative corneal or retinal conditions, optic neuritis, systemic infection, neoplastic diseases, poorly controlled diabetes)
See the full eligibility criteria
Who can join
- Be male or female of any race, at least 18 years of age at Visit 1
- Male subjects must agree to use an adequate method of contraception
- Have provided written informed consent
- Be able and willing to follow instructions, including participation in all study assessments and visits
- At the time of Visit 1, have documentation or observation of a Persistent Epithelial Defect (PED) in one or both eyes, defined as a corneal epithelial defect that has not resolved after 1 week of conventional, treatment using non-preserved ocular lubricants, non-preserved topical ophthalmic antibiotics, oral doxycycline, patching, amniotic membrane, serum tears, and/or therapeutic contact lenses. Note that re-screened subjects who failed conventional treatment needs to go through 1 week of conventional treatment again right before Visit 1
- Have stage 2 or 3 neurotrophic keratopathy (Mackie Classification) in at least one eye of which the longest dimension (length or width) of the defect measures a minimum length of 1 mm (study eye) and which is confirmed by the Investigator not to be simply superficial punctate keratitis, at Visit 1
- Have evidence of decreased corneal sensitivity ≤40 mm (average of 3 measurements) within the area of the PED or corneal ulceration and outside of the area of the defect within 3 mm of the central cornea using the Cochet-Bonnet aesthesiometer at Visit 1;
- Have BCVA score ≤75 letter counts in the study eye based on the ETDRS protocol
- Have at least one eye (the same eye) satisfy all criteria for 4, 5, 6, 7 above
- Female subjects of child-bearing potential must be non-lactating and using and agree to continue using an acceptable method of contraception for at least 4 weeks prior to the first dose of study product and until 12 weeks after last dose, and have a negative urine pregnancy test during screening
What rules you out
- Have any condition that, in the opinion of the Investigator, would interfere with the subject’s ability to complete the study, would interfere with the interpretation of safety or efficacy, or would present an undue risk to the subject. In cases of uncertainty, the Investigator should contact the medical monitor for clarification
- Have received Botox® injection to induce blepharoptosis in the study eye within 90 days prior to Visit 1
- Have used contact lenses (for therapeutic or refractive correction) in the study eye within 14 days prior to Visit 1, or anticipate use of contact lenses during the study period. Note that consented subjects will be instructed to discontinue use of contact lenses for the study eye throughout the study
- Have used OxervateTM in the study eye within the past 2 months
- Anticipate use of serum tears in the study eye during the study period. Note that use of preservative free artificial tears for at least two weeks at the time of screening may continue throughout the study at the discretion of the Investigator
- Have a presence or history of any ocular or systemic disorder or condition that might hinder the efficacy of the study treatment or its evaluation, could possibly interfere with the interpretation of study results, or could be judged by the Investigator to be incompatible with the study visit schedule or conduct (eg, progressive or degenerative corneal or retinal conditions, optic neuritis, systemic infection, neoplastic diseases, poorly controlled diabetes)
- Have used drugs which affect lacrimation or function of the trigeminal nerve (e.g., neuroleptics, antipsychotics and anti-histamine drugs including oral pilocarpine and cevimeline, cholinergics including nasal varenicline, cytotoxic cancer therapy, neuroleptics, and antipsychotics) within 30 days of Visit 1 or anticipate use of these systemic medication throughout the course of the study
- Have any autoimmune or chronic inflammatory disease that might have hindered the efficacy of the study treatment or its evaluation, could possibly have interfered with the interpretation of study results, or could have been judged by the Investigator to be incompatible with the study visit schedule or conduct (e.g., psoriasis, systemic lupus erythematosus, giant cell arteritis, polyarteritis nodosa, relapsing polychondritis, scleroderma, Behcet’s disease, reactive arthritis, inflammatory bowel disease, ankylosing spondylitis, Graves' disease)
- q. Be on topical (Ocular/Nasal) immunosuppressive therapy within 30 days prior to screening or is likely to require this during the course of the study; Note that only Systemic and dermal immunosuppressive therapy (including inhalation) with a stable dose for at least two weeks at the time of Visit 1 is permitted
- Have a known allergy and/or sensitivity to the study product or its components
- History of drug, medication or alcohol abuse or addiction
- Have any clinically significant slit-lamp findings in the study eye at Visit 1 that in the opinion of the Investigator may interfere with the study parameters; Examples include stromal keratitis, numerous punctate keratitis or pterygium, and thin cornea
- Have participated in an investigational drug study within 30 days prior to screening. In addition, it is necessary that at least 5 half-lives of the previously administered investigational drug have elapsed by Visit 1. Observational studies are not exclusionary
- Have fever, inflammation, or systemic signs of illness suggestive of systemic or invasive infection, including COVID-19 or a positive test for COVID-19, within 2 weeks prior to first dose of study drug
- Clinically significant active blepharitis, meibomian gland dysfunction (MGD), or lid margin inflammation, or active ocular allergy in study eye that requires treatment that in the opinion of the investigator may interfere with the study parameters;
- Have a Unanesthetized Schirmer’s test score of ≤3 mm at Visit 1
- Have a lid function abnormality (ex. Lagophthalmos) which, in the opinion of the Investigator, is the primary cause of the persistent epithelial defect
- Have an ongoing ocular infection (bacterial, viral or fungal) or active inflammation (e.g., follicular conjunctivitis) in the study eye. Note that subjects with active stromal herpetic keratitis will also be excluded
- History of any ocular surgery (including laser or refractive surgical procedures) within the three months before study enrollment. Ocular procedures that are the cause of NK that occurred within 3 months prior to Visit 1 are not exclusionary
- Prior surgical procedure(s) for the treatment of NK (e.g. tarsorraphy, conjunctival flap, etc) within the three months before study enrollment with the exception of amniotic membrane transplantation. Subjects previously treated with amniotic membrane transplantation may only be enrolled after the membrane has disappeared within the area of the PED or at least four weeks after the date of the amniotic membrane transplantation procedure
- Have any planned ocular surgical procedures or are likely to require ocular surgery for the study eye during the study
The study team makes the final eligibility decision.
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18-64 years, 65+ years. The study team makes the final eligibility decision.
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BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.