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A Multicenter Study Assessing the Efficacy and Safety of STN1010904 Ophthalmic Suspension 0.03% and 0.1% Compared With Vehicle in Subjects With Fuchs Endothelial Corneal Dystrophy (FECD)

A Phase IIa, Randomized, Double-Masked, Placebo-Controlled, Parallel-Group, Multicenter Study Assessing the Efficacy and Safety of STN1010904 Ophthalmic Suspension 0.03% and 0.1% Compared With Vehicle in Subjects With Fuchs Endothelial Corneal Dystrophy (FECD) - PHANTOM Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05376176
Acronym
PHANTOM
Enrollment
86
Registered
2022-05-17
Start date
2022-05-19
Completion date
2025-05-26
Last updated
2026-08-07

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

Conditions

Fuchs Endothelial Corneal Dystrophy

Brief summary

This is a Phase IIa study to assess efficacy and safety of STN1010904 ophthalmic suspension (0.03%, and 0.1 %), twice daily dosing when compared to Placebo in subjects diagnosed with Fuchs Endothelial Corneal Dystrophy (FECD). This study will consist of a Screening Period of up to 15 days and an 18-month Double-Masked Treatment Period, including 9 individual visits to the study site.

Interventions

DRUGSTN1010904 ophthalmic suspension 0.03% BID

0.03% STN1010904 ophthalmic suspension BID

DRUGSTN1010904 ophthalmic suspension 0.1% BID

0.1% STN1010904 ophthalmic suspension BID

DRUGPlacebo (Vehicle) BID

Placebo (vehicle) BID

Sponsors

Santen Inc.
Lead SponsorINDUSTRY
ActualEyes, Inc.
CollaboratorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
30 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Male or female diagnosed with FECD.

Exclusion criteria

* Females who are pregnant or lactating. * Any ocular surgery for FECD (e.g., penetrating keratoplasty (PKP), Descemet stripping endothelial keratoplasty (DSEK), Descemet membrane endothelial keratoplasty (DMEK), Descemet stripping automated endothelial keratoplasty (DSAEK), Descemet stripping only (DSO) in the study eye.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Best Corrected Visual Acuity (BCVA) With Contrast Level of 100% at Month 18The change is calculated as the difference between the BCVA score at the 18-month visit and the baseline score.This measure evaluates the change in Best Corrected Visual Acuity (BCVA) with a contrast level of 100% from baseline to the 18-month mark. BCVA is assessed using standardized visual acuity charts, and the results are expressed in logMAR units. The baseline score is determined prior to the first dose at Visit 2, and if unavailable, the last observed measurement before the first dose is used. The change is calculated as the difference between the BCVA score at the 18-month visit and the baseline score.
Change From Baseline in BCVA With Contrast Level of 10% at Month 18The change is calculated as the difference between the BCVA score at the 18-month visit and the baseline score.This measure evaluates the change in Best Corrected Visual Acuity (BCVA) with a contrast level of 10% from baseline to the 18-month mark. BCVA is assessed using standardized visual acuity charts, and the results are expressed in logMAR units. The baseline score is determined prior to the first dose at Visit 2, and if unavailable, the last observed measurement before the first dose is used. The change is calculated as the difference between the BCVA score at the 18-month visit and the baseline score.
Change From Baseline in Contrast Sensitivity With Glare Light at Month 18The change is calculated as the difference between the AULCSF at the 18-month visit and the baseline score.This measure evaluates the change in contrast sensitivity under glare conditions from baseline to Month 18. Baseline is defined as the measurement obtained prior to the first dose at Visit 2, or the last available pre-dose measurement if Visit 2 data are unavailable. The change is calculated as the difference between the Month 18 value and the baseline value. AULCSF is calculated using the below steps: Measure contrast sensitivity (CS) at several spatial frequencies (cpd, cycles per degree). For example, at spatial frequencies of 3, 6, 12, 18. Convert the corresponding contrast sensitivity to log10 scale. Convert spatial frequencies to log10 scale. For example, log10(3), log10(6), log10(12), log10(18). Calculate the area using trapezoidal rule. Therefore, the actual measurement of AULCSF is log CS × log(cpd). For simplification, we referred to this as log scale. Higher AULCSF indicates better contrast sensitivity and better visual function.

Countries

France, India, United States

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
41 Participants
Age, Categorical
Between 18 and 65 years
45 Participants
Age, Continuous62.5 years
STANDARD_DEVIATION 9.58
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
4 Participants
Race (NIH/OMB)
Black or African American
2 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
5 Participants
Race (NIH/OMB)
White
53 Participants
Region of Enrollment
France
5 participants
Region of Enrollment
India
4 participants
Region of Enrollment
United States
57 participants
Sex: Female, Male
Female
22 Participants
Sex: Female, Male
Male
7 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 330 / 320 / 21
other
Total, other adverse events
17 / 3323 / 328 / 21
serious
Total, serious adverse events
0 / 331 / 321 / 21

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 8, 2026