Recent Updates
Recently added Catalysts

Reproxalap

Phase 3

Allergic Conjunctivitis | Small molecule | Ophthalmology |Aldeyra Therapeutics, Inc.|Last Updated: May 14, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials4
Total Enrollment596

FDA Designations

No designations recorded

Clinical trial landscape

Reproxalap · 15 trials · 6 indications

Phase 3 8Phase 2 5Phase 1 2
NCT06493604A Trial to Assess the Safety and Efficacy of Subjects With Dry Eye DiseaseDry Eye Disease
COMPLETED116 Analytics
NCT06424444A Clinical Trial to Assess the Safety and Efficacy of Subjects With Dry Eye DiseaseDry Eye Disease
COMPLETED421 Analytics
NCT06389214A Clinical Trial to Assess the Efficacy and Safety of Subjects With Dry Eye DiseaseDry Eye Disease
COMPLETED132 Analytics
NCT05234554The INVIGORATE 2 Trial: A Clinical Trial to Assess the Efficacy and Safety of Subjects With Seasonal Allergic ConjunctivitisAllergic Conjunctivitis
COMPLETED131 Analytics
NCT05062330The TRANQUILITY 2 Trial: A Phase 3 Clinical Trial to Assess the Efficacy and Safety in Subjects With Dry Eye DiseaseDry Eye
COMPLETED361 Analytics
NCT04735393A Multi-Center, Double-Masked, Randomized, Vehicle-Controlled, Parallel-Group Clinical Trial Evaluating the Safety of Reproxalap Ophthalmic Solution in Subjects With Dry Eye DiseaseDry Eye Disease
COMPLETED757 Analytics
NCT04207736The INVIGORATE Trial: A Clinical Trial to Assess the Efficacy and Safety of Subjects With Seasonal Allergic Conjunctivitis.Allergic Conjunctivitis
COMPLETED95 Analytics
NCT03494504ALLEVIATE Trial - A Phase 3 Trial in Subjects With Allergic ConjunctivitisAllergic Conjunctivitis
COMPLETED318 Analytics
PHASE3COMPLETED
A Trial to Assess the Safety and Efficacy of Subjects With Dry Eye Disease
Dry Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
A Clinical Trial to Assess the Safety and Efficacy of Subjects With Dry Eye Disease
Dry Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
A Clinical Trial to Assess the Efficacy and Safety of Subjects With Dry Eye Disease
Dry Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
The INVIGORATE 2 Trial: A Clinical Trial to Assess the Efficacy and Safety of Subjects With Seasonal Allergic Conjunctivitis
Allergic ConjunctivitisUnlock trial analytics
PHASE3COMPLETED
The TRANQUILITY 2 Trial: A Phase 3 Clinical Trial to Assess the Efficacy and Safety in Subjects With Dry Eye Disease
Dry EyeUnlock trial analytics
PHASE3COMPLETED
A Multi-Center, Double-Masked, Randomized, Vehicle-Controlled, Parallel-Group Clinical Trial Evaluating the Safety of Reproxalap Ophthalmic Solution in Subjects With Dry Eye Disease
Dry Eye DiseaseUnlock trial analytics
PHASE3COMPLETED
The INVIGORATE Trial: A Clinical Trial to Assess the Efficacy and Safety of Subjects With Seasonal Allergic Conjunctivitis.
Allergic ConjunctivitisUnlock trial analytics
PHASE3COMPLETED
ALLEVIATE Trial - A Phase 3 Trial in Subjects With Allergic Conjunctivitis
Allergic ConjunctivitisUnlock trial analytics

Study Endpoints

Primary Endpoints

Ocular discomfort symptom score over 100 minutes in the dry eye chamber at Visit 1 and Visit 3
Day -14 to Day 2

Measured using a 0 - 100 visual analog scale (VAS) where 0 is "no discomfort" and 100 is "maximal discomfort"

Subject-reported ocular discomfort score over Week 1 to Week 6
From Day -14 to Day 43

Measured using a 0 - 100 visual analog scale where 0 is "no discomfort" and 100 is "maximal discomfort"

Ocular discomfort symptom score over 100 minutes in the dry eye chamber at Visit 2 and Visit 4
From Day -14 to Day 2

Measured using a 0 - 100 visual analog scale (VAS) where 0 is "no discomfort" and 100 is "maximal discomfort"

Subject-Reported Ocular Itching Score Assessed in the Allergy Chamber
110 to 210 minutes during allergen chamber exposure

The method of assessment was a 9-point ocular itch scale measured in half-unit increments (0 none - 4 severe) with a higher score representing worse symptomology. Subjects were dosed once just prior to allergen chamber entry and again halfway through the chamber. The allergen chamber was 210 ten minutes in duration with the itching assessment being collected every 10 minutes from 110 to 210 minutes. The timepoints were assessed using mixed model repeated measures.

Schirmer Test Mean Change From Baseline
The efficacy assessment period was before and after the final dose on Day 1 (Dose 4). Baseline was approximately two weeks before dosing at Screening.

Change from baseline comparison of reproxalap to vehicle for Schirmer test (0 to 35 mm). Higher scores represent greater tear production. The least squares mean (standard error) was derived from a mixed model repeated measures analysis of change from baseline, with baseline as a covariate, and time point and treatment group as factors.

Number of Subject Eyes That Are Schirmer Test Responders
The efficacy assessment period was before and after the final dose on Day 1 (Dose 4). Baseline was approximately two weeks before dosing at Screening.

Comparison of reproxalap to vehicle for number of subject eyes that are Schirmer test responders (10 millimeters or more increase from baseline). A generalized estimating equation analysis was performed with baseline as a covariate, and time point and treatment group as factors.

Treatment-Emergent Serious Adverse Events (TE-SAEs) of Visual Acuity Decrease
Safety assessment period (six weeks)

The proportion of 6-week safety population subjects that experience at least one visual acuity TE-SAE decrease (defined as an increase of 0.22 or greater in logMAR score) categorized as probably or definitely related to test article.

TE-SAEs of Increase in Intraocular Pressure
Safety assessment period (six weeks)

The proportion of 6-week safety population subjects that experience at least one intraocular pressure TE-SAE (increase from baseline of greater than or equal to 10 mmHg and intraocular pressure of greater than 25 mmHg) categorized as probably or definitely related to test article.

TE-SAEs of the Cornea
Safety assessment period (six weeks)

The proportion of 6-week safety population subjects that experience at least one cornea-related TE-SAE (detected via slit-lamp examination) categorized as probably or definitely related to test article.

TE-SAEs of the Retina
Safety assessment period (six weeks)

The proportion 6-week safety population subjects that experience at least one retinal TE-SAE (detected via fundoscopy) categorized as probably or definitely related to test article.

TE-SAEs of Visual Acuity Decrease
Safety assessment period (12 months)

The proportion of 12-month safety population subjects that experience at least one visual acuity TE-SAE (defined as an increase of 0.22 or greater in logMAR score) categorized as probably or definitely related to test article.

Subject-Reported Ocular Itching Score Assessed Over 110 to 210 Minutes in the Allergy Chamber
The efficacy assessment period was 110 to 210 minutes in the allergy chamber; baseline was pre-Dose #1 for each treatment period.

Change from baseline comparison of reproxalap to vehicle for ocular itching on a 0 to 4 scale ( 0 = none, 4 = severe). The treatment comparison was performed using a mixed model repeated measures approach for a crossover trial with two treatment periods. The model included time point, treatment, treatment period, treatment sequence, and interaction between time point and treatment as fixed effects, and subject nested within treatment sequence as a repeated measure.

Subject-reported Ocular Itching Score
Efficacy was assessed after a single dose; baseline was assessed approximately two weeks before dosing.

Subject-reported ocular itching score area under the curve from 10 to 60 minutes post allergen challenge using a 0 to 4 scale (0 = none, 4 = severe) was assessed. The least squares mean was derived from analysis of covariance of area under the curve with baseline as a covariate and treatment as a fixed effect The possible range for area under the curve least squares mean is 0 to 100, where a lower score is better.

Conjunctival Redness Assessed Via Digital Photography Over 90 Minutes in the Dry Eye Chamber
The efficacy assessment period was during a 90-minute dry eye chamber; baseline was pre-dose #1 for each treatment period.

Change from baseline comparison of reproxalap to vehicle for conjunctival redness assessed on a 0 to 4 scale (0 = none, 4 = extremely severe). The least squares mean (95% confidence interval) was derived from mixed model repeated measure for change from baseline included baseline as a covariate, and treatment, period, sequence, and time point as factors.

Change From Baseline in Ocular Discomfort
The efficacy assessment period was approximately every 5 minutes during a 45-minute dry eye chamber. Baseline was prior to dosing for each treatment period.

Ocular discomfort (0 = none, 10 = extremely severe) was reported by patients in a dry eye chamber. Change from baseline was analyzed using a mixed model repeated measures (MMRM) analysis, with baseline as a covariate, and treatment and intra-chamber time point as factors.

Change From Baseline in Ocular Itching
The efficacy assessment period was approximately every 5 minutes during a 45-minute dry eye chamber. Baseline was prior to dosing for each treatment period.

Ocular itching (0 = none, 10 = extremely severe) was reported by patients in a dry eye chamber. Change from baseline was analyzed using a MMRM analysis, with baseline as a covariate, and treatment and intra-chamber time point as factors.

Subject-reported Ocular Dryness Score (0 - 100 Visual Analogue Scale (VAS))
The efficacy assessment period was assessed during the 90-minute dry eye chamber at Day 2; baseline was Pre-Dose #1 at Day 1.

Change from baseline comparison of reproxalap to vehicle for subject-reported ocular dryness score VAS (0 = no discomfort, 100 = maximal discomfort), where a high score means a worse outcome. The intervention was administered bilaterally. The least squares mean (standard error) was derived from mixed model repeated measure for change from baseline included baseline, treatment group, and nominal time point as fixed effects.

Schirmer Test Change From Baseline After the First Dose on Day 1
The efficacy assessment period was before and after the final dose on Day 1; baseline was Pre-Dose #1 at Day 1.

Change from baseline comparison of reproxalap to vehicle for Schirmer test on a millimeter line (0 = none, 35 = maximum), where a shorter length indicates a worse outcome. The intervention was administered bilaterally. The least squares mean (standard error) was derived from mixed model repeated measure for change from baseline included baseline and treatment group as fixed effects.

Conjunctival Redness Assessed Over 90 Minutes in the Dry Eye Chamber
The efficacy assessment period was assessed during the 90-minute dry eye chamber at Day 2; baseline was Pre-Dose #1 at Day 1.

Change from baseline comparison of reproxalap to vehicle for conjunctival redness on a 0 to 4 scale ( 0 = normal, 4 = prominent), where a high score means a worse outcome. The intervention was administered bilaterally. The least squares mean (standard error) was derived from mixed model repeated measures for change from baseline included baseline, site, treatment group, and nominal time point as fixed effects.

Efficacy of ADX-102 on the Ora Calibra® Discomfort & 4-Symptom Questionnaire for Dryness.
Efficacy assessment period (Day 1 through Day 85) - assessed on Days 1, 15, 29, 57, and 85.

Change from baseline comparison of ADX-102 to Vehicle on the Ora Calibra® Discomfort \& 4-Symptom Questionnaire (0 = least, 5 = most) for dryness across all time points. The intervention was administered bilaterally. The Least Squares Mean (Standard Error) was derived from Mixed Model Repeated Measure for change from baseline calculated using baseline score, visit, treatment, and visit-by-treatment interaction.

Change From Baseline Ocular Itching Score on High Pollen Days
Efficacy was assessed on high-pollen days over 28 days of treatment; baseline was assessed approximately one week before dosing.

Mean change from baseline in ocular itching score using a 0 to 4 scale (0 = least, 4 = most) was assessed on days when peak pollen counts meet or exceed the American Academy of Allergy Asthma \& Immunology weed pollen scale 95th percentile (325 grains per cubic meter). The least squares mean (standard error) was derived from analysis of covariance with baseline, treatment, and day as factors.

Secondary Endpoints

Conjunctival Redness Evaluated by the Investigator
12 to 212 minutes during allergen chamber exposure
Conjunctival Redness Score Assessed Over 12 to 212 Minutes in the Allergy Chamber
The efficacy assessment period was 12 to 212 minutes in the allergy chamber; baseline was pre-Dose #1 for each treatment period.
Number of Subjects With Two-point Reduction in Itching Score
Efficacy was assessed after a single dose; baseline was assessed approximately two weeks before dosing.
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Reproxalap Ophthalmic Solution (0.25%) administered six times over two consecutive daysEXPERIMENTAL -
Vehicle Ophthalmic Solution administered six times over two consecutive daysPLACEBO_COMPARATOR -
Reproxalap Ophthalmic Solution (0.25%)EXPERIMENTAL -
Vehicle Ophthalmic SolutionPLACEBO_COMPARATOR -
Reproxalap Ophthalmic Solution (0.25%) administered 7 times over two consecutive daysEXPERIMENTAL -
Vehicle Ophthalmic Solution administered 7 times over two consecutive daysPLACEBO_COMPARATOR -
Reproxalap (0.25%) for six weeksEXPERIMENTALReproxalap four times daily (QID) for four weeks followed by two times daily (BID) for two weeks
Vehicle for six weeksPLACEBO_COMPARATORVehicle QID for four weeks followed by BID for two weeks
Reproxalap (0.25%) for 12 monthsEXPERIMENTALReproxalap (0.25%) QID for four weeks followed by BID for 11 months
Vehicle for 12 monthsPLACEBO_COMPARATORVehicle QID for four weeks followed by BID for 11 months
Reproxalap Ophthalmic Solution (0.5%)EXPERIMENTAL -
Xiidra® (5% lifitegrast ophthalmic solution)ACTIVE_COMPARATORSingle dose
Reproxalap Ophthalmic Solution (0.25%) administered 7 times over two consecutive days.EXPERIMENTAL -
Vehicle Ophthalmic Solution administered 7 times over two consecutive days.PLACEBO_COMPARATOR -
Reproxalap Ophthalmic Solution (0.25%) administered QID over two consecutive days.EXPERIMENTAL -
Vehicle Ophthalmic Solution administered over two consecutive days.PLACEBO_COMPARATOR -
Reproxalap Ophthalmic Solution (0.1%)EXPERIMENTAL -

Interventions

NameTypeDescription
Reproxalap Ophthalmic Solution (0.25%)DRUGReproxalap Ophthalmic Solution (0.25%) administered six times over two consecutive days
Vehicle Ophthalmic SolutionDRUGVehicle Ophthalmic Solution administered six times over two consecutive days
Placebo ComparatorDRUGVehicle Ophthalmic Solution administered for six weeks (QID for four weeks then BID for two weeks).
Reproxalap Ophthalmic Solution (0.5%)DRUGReproxalap Ophthalmic Solution (0.5%) administered once.
Xiidra® (5% lifitegrast ophthalmic solution)DRUGXiidra® (5% lifitegrast ophthalmic solution) dosed once
Vehicle Opthalmic SolutionDRUGVehicle Ophthalmic Solution administered over two consecutive days (Day one pre-dry eye chamber and Day two dry eye chamber assessment).
Reproxalap Ophthalmic Solution (0.1%)DRUGReproxalap Ophthalmic Solution (0.1%) administered for approximately twelve weeks.
Unlock Study Design Details

Eligibility Criteria

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

Inclusion Criteria: * 18 years of age (either gender and any race) * Ability to provide written informed consent and sign the Health Information Portability and Accountability Act form * Reported history of ocular discomfort associated with dry eye disease for at least 6 months prior to Visit 1 * R...

Countries:United StatesCanada
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

MEDIUMJun 14, 2026NCT05234554TRIAL_REMOVED: changed
MEDIUMJun 14, 2026NCT05234554TRIAL_REMOVED: changed
MEDIUMJun 14, 2026NCT05234554TRIAL_REMOVED: changed

Frequently asked questions about Reproxalap

What is Reproxalap used for?

Reproxalap is an investigational small molecule being developed for the treatment of dry eye disease, including dry eye syndrome and allergic conjunctivitis. It is administered as an ophthalmic solution and is currently in Phase 3 clinical development for these ophthalmologic conditions.

Who makes Reproxalap?

Reproxalap is being developed by Aldeyra Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol ALDX. The company is conducting clinical trials of Reproxalap ophthalmic solution in the United States for the treatment of dry eye disease.

What phase is Reproxalap in?

Reproxalap is in Phase 3 clinical development for dry eye disease. While earlier Phase 2 trials have been completed, the most recent trials, including those with enrollment of 757 and 421 participants, are Phase 3 studies. Reproxalap is investigational and has not been approved by the FDA.

What clinical trials is Reproxalap in?

Reproxalap has been studied in four completed clinical trials in the United States. These include NCT03404115, a Phase 2 trial with 300 participants, and three Phase 3 trials: NCT04735393 with 757 participants, NCT06424444 with 421 participants, and NCT06493604 with 116 participants, all evaluating the safety and efficacy of Reproxalap in dry eye disease.

Is Reproxalap FDA approved?

No, Reproxalap is not FDA approved. It is an investigational drug currently in Phase 3 clinical development for dry eye disease. All four clinical trials of Reproxalap have been completed, but the drug remains under investigation and has not yet received regulatory approval for any indication.

How does Reproxalap work?

Reproxalap is a small molecule that works by reducing levels of reactive aldehydes, which are elevated in ocular inflammation and contribute to dry eye disease. By binding to these aldehydes, Reproxalap aims to alleviate the signs and symptoms of dry eye and allergic conjunctivitis.