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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 (SEER-2)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-518969-98-00
Acronym
RGN-NK-302
Enrollment
35
Registered
2025-03-13
Start date
2025-11-04
Completion date
Unknown
Last updated
2025-12-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neurotrophic Keratopathy

Brief summary

Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the Persistent Epithelial Defect (PED) at Visit 5 (Day 29) determined by corneal fluorescein staining as measured by the Central Reading Center. The size of the lesion is based on the longest dimension (length or width) of the defect

Detailed description

Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visit 5 (Day 29), Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Central Reading Center at Visits 2, 3, 4, 6, and 7, Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visits 2, 3, 4, 6, and 7, Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Central Reading Center at Visit 2-7 (measurements of greatest dimension of fluorescein staining), Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Investigator at Visit 2-7 (measurements of greatest dimension of fluorescein staining), NK stage (Mackie Classification) determined by corneal fluorescein staining as measured by the Investigator at Visits 2-7, Visual Acuity determined by Early Treatment of Diabetic Retinopathy Study (ETDRS) at Visits 2-7, Corneal sensitivity inside the lesion determined by Cochet-Bonnet aesthesiometer at Visits 2-7, Change from baseline in Ocular discomfort, Photophobia, Foreign body sensation, Burning and Dryness using VAS at Visit 3 and Visit 5., Change from baseline in Frequency of symptoms and severity of symptoms in SANDE questionnaire at Visit 3 and Visit 5., Proportion of subjects achieving complete healing (defined as 0 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Central Reading Center over multiple visits from visit 2 to visit 5, Proportion of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator over multiple visits from visit 2 to visit 5

Interventions

DRUGThe placebo matches the test product with identical composition (with the exclusion of the active ingredient
DRUGtimbetasin acetate)
DRUGmanufactured using the same process and package in the same container closure system.

Sponsors

Regentree LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the Persistent Epithelial Defect (PED) at Visit 5 (Day 29) determined by corneal fluorescein staining as measured by the Central Reading Center. The size of the lesion is based on the longest dimension (length or width) of the defect

Secondary

MeasureTime frame
Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visit 5 (Day 29), Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Central Reading Center at Visits 2, 3, 4, 6, and 7, Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visits 2, 3, 4, 6, and 7, Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Central Reading Center at Visit 2-7 (measurements of greatest dimension of fluorescein staining), Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Investigator at Visit 2-7 (measurements of greatest dimension of fluorescein staining), NK

Countries

Italy, Poland, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026