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Urcosimod

Phase 3

Neuropathic Corneal Pain | Small Molecules | Neurology |OKYO Pharma Limited|Trials Updated: Sep 29, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment111

FDA Designations

FAST_TRACK

Urcosimod clinical trials

Urcosimod · 1 trial · 1 indication

Phase 3 1
NCT07838506Phase 3, Multi-Center, Randomized, Double-Masked, Placebo-Controlled Study Assessing the Safety and Efficacy of Urcosimod Ophthalmic Solution in Participants With Neuropathic Corneal Pain (NCP).Neuropathic Corneal Pain
NOT YET_RECRUITING111 Analytics
PHASE3NOT YET_RECRUITING
Phase 3, Multi-Center, Randomized, Double-Masked, Placebo-Controlled Study Assessing the Safety and Efficacy of Urcosimod Ophthalmic Solution in Participants With Neuropathic Corneal Pain (NCP).
Neuropathic Corneal PainUnlock trial analytics

Study Endpoints

Primary Endpoints

The change from baseline at Week 12 in ocular pain assessed by Visual Analogue Scale (0-10) score. (Score of 10 is "worst possible pain".)
From baseline (time of randomization) compared to Week 12.

Evaluate the efficacy and safety of urcosimod 0.05% as compared to placebo instilled 4 times/day in participants who have a documented ocular history of symptoms of neuropathic corneal pain.

Secondary Endpoints

Change from baseline at Week 12 in Quality-of-Life score.
Baseline visit compared to Week 12.
Change from baseline at Weeks 4, 8, and 16 in ocular pain assessed by Visual Analogue Scale (0-10) score. (Score of 10 is "worst possible pain".)
Baseline visit compared to Weeks 4, 8 and 16.
Change from baseline at Week 2 in ocular pain assessed by Visual Analogue Scale (0-10) score in the participant diary. (Score of 10 is "worst possible pain".)
Baseline visit compared to Week 2 of treatment period.
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Urcosimod Ophthalmic SolutionEXPERIMENTAL• Urcosimod 0.05% - one drop in affected eye(s), four times a day
Vehicle ophthalmic solutionPLACEBO_COMPARATORVehicle - one drop in affected eye(s), four times a day.

Interventions

NameTypeDescription
Urcosimod ophthalmic solution is a preservative-free topical ophthalmic product; supplied in unit dose ampoules; administered QID for 12-weeks.DRUGTopical ophthalmic solution, applied as 1 drop QID in affected eye(s)\* for the 12-week Treatment Period
Vehicle Ophthalmic SolutionOTHERVehicle solution of the study drug (without active ingredient); preservative-free topical ophthalmic solution supplied in unit-dose ampoules; administered QID for 12-weeks.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Aged 18 years of age or older. 2. Able and willing to provide written informed consent prior to any study-related procedures. 3. Presence of symptoms of neuropathic corneal pain for at least 3 months defined as the presence of ocular pain associated or not with ocular symptom...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMSep 29, 2026NCT07838506lastUpdatePostDate: changed
MEDIUMSep 29, 2026NCT07838506lastUpdatePostDate: changed
LOWSep 24, 2026NCT07838506NEW_TRIAL: changed
LOWSep 24, 2026NCT07838506NEW_TRIAL: changed

Frequently asked questions about Urcosimod

What is Urcosimod used for?

Urcosimod is an investigational ophthalmic solution being developed for neuropathic corneal pain, a condition involving persistent eye pain. It is a preservative-free topical product supplied in unit dose ampoules and is administered four times daily (QID) over a 12-week treatment period.

Who is developing Urcosimod?

Urcosimod is being developed by OKYO Pharma Limited, which trades under the ticker OKYO. The company is advancing the ophthalmic solution for neuropathic corneal pain, a neurology-related therapeutic area, with the product currently in Phase 3 clinical development.

What phase is Urcosimod in?

Urcosimod is in Phase 3 clinical development. It is an investigational product and has not been approved by the FDA. The Phase 3 program is evaluating the safety and efficacy of Urcosimod ophthalmic solution in participants with neuropathic corneal pain.

What clinical trials is Urcosimod in?

Urcosimod is being studied in one active Phase 3 trial, NCT07838506, titled a Phase 3, Multi-Center, Randomized, Double-Masked, Placebo-Controlled Study Assessing the Safety and Efficacy of Urcosimod Ophthalmic Solution in Participants With Neuropathic Corneal Pain. The trial plans to enroll 111 participants in the United States and is not yet recruiting.

Does Urcosimod have any FDA designations?

Urcosimod has received Fast Track designation from the FDA. Fast Track is intended to facilitate development and expedite review of drugs addressing serious conditions with unmet medical need. Urcosimod remains investigational and is in Phase 3 development for neuropathic corneal pain.

How is Urcosimod administered?

Urcosimod is a preservative-free topical ophthalmic product supplied in unit dose ampoules. It is administered four times daily (QID) for a 12-week period. The Phase 3 trial NCT07838506 is evaluating this dosing regimen in participants with neuropathic corneal pain.