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Prospective Study on DEXTENZA® Safety And Efficacy Following Concomitant MIGS and Cataract Surgery

Prospective Study on DEXTENZA® Safety And Efficacy Following Concomitant MIGS and Cataract Surgery

Status
Terminated
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04200651
Acronym
SUSTAIN
Enrollment
25
Registered
2019-12-16
Start date
2020-01-13
Completion date
2023-07-12
Last updated
2024-01-31

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

Conditions

Glaucoma, Cataract

Keywords

MIGS, Minimally invasive glaucoma surgery

Brief summary

In this study, the investigators are comparing dexamethasone ophthalmic insert (DEXTENZA®) to the current standard of care, prednisolone acetate 1% eye drops, in a glaucoma population receiving both cataract and minimally-invasive glaucoma surgery (MIGS). DEXTENZA® and prednisolone acetate 1% drops are both steroids used to control inflammation after eye surgery. DEXTENZA®'s method of delivery differs by offering a sustained release of steroid that does not necessitate postoperative anti-inflammatory eye drops. The investigators hypothesize that DEXTENZA® will be as safe as prednisolone acetate 1% drops and as effective at controlling postoperative inflammation following concomitant cataract-MIGS in a glaucoma population. The investigators also hypothesize that DEXTENZA® will be preferred by patients over prednisolone acetate 1% drops.

Detailed description

Glaucoma and cataract surgery patients face an outsize postoperative burden. In addition to taking frequent anti-inflammatory eye drops, they often continue their glaucoma medications. This can cause patient confusion and nonadherence, potentially leading to poor healing, slower recovery period, and/or cystoid macular edema. DEXTENZA®, as a sustained release anti-inflammatory insert, could help preclude adherence difficulties and increase comfort by reducing eye drop load. However, glaucoma surgeons may hesitate to adopt DEXTENZA® due to concerns regarding safety with respect to elevated intraocular pressure. This prospective study will address those concerns directly, providing timely and high-quality clinical evidence comparing DEXTENZA® to standard-of-care steroid eye drops. For physicians and patients, the results of this study will prove immediately useful for therapeutic decision-making.

Interventions

DEXTENZA® is a 3mm long gel-like cylinder that is inserted in the punctum, a natural opening in the lower eyelid. DEXTENZA® is activated by the eye's moisture. DEXTENZA® delivers 0.4 mg dexamethasone, a liquid corticosteroid, onto the surface of the eye automatically for up to 30 days after eye surgery. Dexamethasone is used to reduce inflammation and eye pain. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.

Prednisolone acetate 1% eye drops are used 2-4 times daily for 30 days as the current standard of care for treating inflammation and eye pain after cataract surgery. Prednisolone, like dexamethasone, is a steroid. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.

Sponsors

Ocular Therapeutix, Inc.
CollaboratorINDUSTRY
The New York Eye Surgery Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This prospective study enrolled 29 eyes from 25 total patients. The protocol permitted some binocular enrollment from patients who met eligibility criteria in both eyes. All eligible eyes received concomitant cataract and MIGS surgery. Each eye was randomized to receive either DEXTENZA® insertion at the end of the surgery or to a standard of care prednisolone acetate 1% eye drop regimen via block randomization. All eyes received the standard of care topical ofloxacin antibiotic regimen. The experimental group consisted of the eyes receiving DEXTENZA® insertion. The control group consisted of the eyes placed on the prednisolone eye drop regimen.

Eligibility

Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Cataract surgery candidate and glaucoma present in at least one eye. * Minimally-invasive glaucoma surgery candidate in that same eye. Defined by having ocular hypertension requiring a medication, OR as by having mild, moderate, or severe glaucoma that is sufficiently stable and appropriate for operation.

Exclusion criteria

* Maintains regular use (daily or more) of systemic or ocular steroids at time of enrollment * Maintains regular use (daily or more) of systemic or ocular nonsteroidal anti-inflammatory drugs at time of enrollment * Anterior chamber cells present at time of enrollment * Recent febrile illness that precludes or delays participation for 3 months * Pregnancy or lactation * Known allergy to dexamethasone * Known allergy to prednisolone * Treatment with another investigational drug within the last 20 years * Current recreational drug use * Preexisting ocular pathology likely to confound the visual acuity or comfort endpoints including but not limited to: severe corneal scarring, ocular surface disease, diabetic retinopathy, or macular edema * Corneal or retinal procedures (laser or incisional) during the study period and 6 months prior

Design outcomes

Primary

MeasureTime frameDescription
Change in Intraocular Pressure (IOP) at 1 and 3 Months1 month postop, 3 months postopUsing quantitative IOP readings to compare ocular safety between arms. Since the outcome examined was a change, baseline, month 1 postop, and month 3 postop data were used in the calculations. 1 month change calculation: Month 1 postop value - Baseline value 3 month change calculation: Month 3 postop value - Baseline value
Change in Best-corrected Visual Acuity (BCVA) at 1 and 3 Months1 month postop, 3 months postopUsing quantitative BCVA measurements, as determined by ETDRS chart at 4 meters, to compare ocular safety and effectiveness between arms. Since the outcome examined was a change, baseline, month 1 postop, and month 3 postop data were used in the calculations. 1 month change calculation: Month 1 postop value - Baseline value 3 month change calculation: Month 3 postop value - Baseline value
Difference in Eyes With Adverse Events Between GroupsUp to 3 months postopUsing the average number of eyes with adverse events that occur in each arm to compare safety between arms through 3 months of postoperative follow-up
Difference in Number of Glaucoma Medications at 3 Months3 months postopUsing the average number of glaucoma medications added or subtracted to each arm to compare safety between arms. These calculations were performed by subtracting the baseline glaucoma medications from the glaucoma medications at month 3.

Secondary

MeasureTime frameDescription
Percentage of Eyes Requiring Supplemental Prednisolone Acetate 1% Eye DropsUp to 3 months postopRecording the percentage of eyes in the DEXTENZA® arm that require anti-inflammatory rescue with supplemental ocular steroid. This will provide insight into anti-inflammatory effectiveness of DEXTENZA®
Difference in Number of Eyes With Absence of Anterior Chamber (AC) Cells at 1 Month1 month postopComparing the number of eyes with complete AC clearance of inflammatory cells, as determined by slit lamp exam, between arms to evaluate drug effectiveness
Number of Eyes With Presenting With Cystoid Macular Edema (CME) as Seen on Optical Coherence Tomography (OCT)3 months postopUsing the number of CME cases in each arm, as visualized by OCT, to compare safety and effectiveness between arms
Difference in Ocular Comfort Index (OCI) Score at 1 Month1 month postopUsing the Ocular Comfort Index survey to compare patients' self-reported ocular comfort between arms, providing insight into drug effectiveness. The minimum score is 0 and the maximum score is 100, with 100 indicating the most ocular irritation and discomfort and 0 indicating the least ocular irritation and discomfort
Difference in Ocular Comfort Index (OCI) Score at 3 Months3 months postopUsing the Ocular Comfort Index survey to compare patients' self-reported ocular comfort between arms, providing insight into drug effectiveness. The minimum score is 0 and the maximum score is 100, with 100 indicating the most ocular irritation and discomfort and 0 indicating the least ocular irritation and discomfort

Countries

United States

Participant flow

Pre-assignment details

In total, 25 subjects contributing 29 eyes were consented for the study. Of those 29 eyes consented, 5 eyes from 5 subjects met exclusion criteria, thus leaving 24 eyes from 20 subjects who started the study as described below.

Participants by arm

ArmCount
DEXTENZA® Arm
This arm will receive the DEXTENZA® insert after cataract surgery and MIGS. Dexamethasone Ophthalmic Insert: DEXTENZA® is a 3mm long gel-like cylinder that is inserted in the punctum, a natural opening in the lower eyelid. DEXTENZA® is activated by the eye's moisture. DEXTENZA® delivers 0.4 mg dexamethasone, a liquid corticosteroid, onto the surface of the eye automatically for up to 30 days after eye surgery. Dexamethasone is used to reduce inflammation and eye pain. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.
12
DEXTENZA® Arm
This arm will receive the DEXTENZA® insert after cataract surgery and MIGS. Dexamethasone Ophthalmic Insert: DEXTENZA® is a 3mm long gel-like cylinder that is inserted in the punctum, a natural opening in the lower eyelid. DEXTENZA® is activated by the eye's moisture. DEXTENZA® delivers 0.4 mg dexamethasone, a liquid corticosteroid, onto the surface of the eye automatically for up to 30 days after eye surgery. Dexamethasone is used to reduce inflammation and eye pain. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.
12
Prednisolone Acetate 1% Arm
This arm will receive the prescription for daily prednisolone acetate 1% eye drops after cataract surgery and MIGS. Prednisolone Acetate 1% Oph Susp: Prednisolone acetate 1% eye drops are used 2-4 times daily for 30 days as the current standard of care for treating inflammation and eye pain after cataract surgery. Prednisolone, like dexamethasone, is a steroid. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.
6
Prednisolone Acetate 1% Arm
This arm will receive the prescription for daily prednisolone acetate 1% eye drops after cataract surgery and MIGS. Prednisolone Acetate 1% Oph Susp: Prednisolone acetate 1% eye drops are used 2-4 times daily for 30 days as the current standard of care for treating inflammation and eye pain after cataract surgery. Prednisolone, like dexamethasone, is a steroid. This arm will also receive the standard of care topical ofloxacin eye drop antibiotic regimen.
6
Total36

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up13
Overall StudyMoved to another country during follow-up22

Baseline characteristics

CharacteristicDEXTENZA® ArmPrednisolone Acetate 1% ArmTotal
Age, Continuous
Fellow eyes
67 years
STANDARD_DEVIATION 9.9
67 years
STANDARD_DEVIATION 9.9
67 years
STANDARD_DEVIATION 8.08
Age, Continuous
Single eyes
70.6 years
STANDARD_DEVIATION 11.65
73 years
STANDARD_DEVIATION 6.32
71.3 years
STANDARD_DEVIATION 10.22
Central corneal thickness
Fellow eyes
492 microns
STANDARD_DEVIATION 5.66
475 microns
STANDARD_DEVIATION 4.24
483.5 microns
STANDARD_DEVIATION 10.63
Central corneal thickness
Single eyes
521.70 microns
STANDARD_DEVIATION 39.88
534.80 microns
STANDARD_DEVIATION 23.39
525.44 microns
STANDARD_DEVIATION 35.57
Cup-to-disc ratio
Fellow eyes
0.63 ratio
STANDARD_DEVIATION 0.21
0.49 ratio
STANDARD_DEVIATION 0.2
0.56 ratio
STANDARD_DEVIATION 0.19
Cup-to-disc ratio
Single eyes
0.65 ratio
STANDARD_DEVIATION 0.09
0.67 ratio
STANDARD_DEVIATION 0.07
0.66 ratio
STANDARD_DEVIATION 0.08
Glaucoma medications
Fellow eyes
1 medications
STANDARD_DEVIATION 0
1 medications
STANDARD_DEVIATION 0
1 medications
STANDARD_DEVIATION 0
Glaucoma medications
Single eyes
1.8 medications
STANDARD_DEVIATION 0.92
1.5 medications
STANDARD_DEVIATION 0.58
1.7 medications
STANDARD_DEVIATION 0.83
Glaucoma severity
Fellow eyes
Mild glaucoma
0 Eyes1 Eyes1 Eyes
Glaucoma severity
Fellow eyes
Moderate glaucoma
2 Eyes1 Eyes3 Eyes
Glaucoma severity
Single eyes
Mild glaucoma
0 Eyes0 Eyes0 Eyes
Glaucoma severity
Single eyes
Moderate glaucoma
10 Eyes4 Eyes14 Eyes
Intraocular pressure (IOP)
Fellow eyes
16 mmHg
STANDARD_DEVIATION 5.66
16 mmHg
STANDARD_DEVIATION 5.66
16 mmHg
STANDARD_DEVIATION 4.62
Intraocular pressure (IOP)
Single eyes
17.75 mmHg
STANDARD_DEVIATION 1.96
18.75 mmHg
STANDARD_DEVIATION 4.86
18.04 mmHg
STANDARD_DEVIATION 2.89
LogMAR visual acuity
Fellow eyes
0.52 logMAR
STANDARD_DEVIATION 0.03
0.47 logMAR
STANDARD_DEVIATION 0.1
0.50 logMAR
STANDARD_DEVIATION 0.07
LogMAR visual acuity
Single eyes
0.83 logMAR
STANDARD_DEVIATION 0.68
0.58 logMAR
STANDARD_DEVIATION 0.3
0.76 logMAR
STANDARD_DEVIATION 0.6
Minimally invasive glaucoma surgery (MIGS) type
Fellow eyes
Canaloplasty
1 Eyes1 Eyes2 Eyes
Minimally invasive glaucoma surgery (MIGS) type
Fellow eyes
Hydrus
1 Eyes1 Eyes2 Eyes
Minimally invasive glaucoma surgery (MIGS) type
Fellow eyes
iStent
0 Eyes0 Eyes0 Eyes
Minimally invasive glaucoma surgery (MIGS) type
Single eyes
Canaloplasty
7 Eyes2 Eyes9 Eyes
Minimally invasive glaucoma surgery (MIGS) type
Single eyes
Hydrus
2 Eyes2 Eyes4 Eyes
Minimally invasive glaucoma surgery (MIGS) type
Single eyes
iStent
1 Eyes0 Eyes1 Eyes
Prior glaucoma laser treatment
Fellow eyes
2 Eyes2 Eyes4 Eyes
Prior glaucoma laser treatment
Single eyes
3 Eyes0 Eyes3 Eyes
Race/Ethnicity, Customized
Fellow eyes
Asian
0 Eyes0 Eyes0 Eyes
Race/Ethnicity, Customized
Fellow eyes
Black
2 Eyes2 Eyes4 Eyes
Race/Ethnicity, Customized
Fellow eyes
Hispanic/Latino
0 Eyes0 Eyes0 Eyes
Race/Ethnicity, Customized
Fellow eyes
White
0 Eyes0 Eyes0 Eyes
Race/Ethnicity, Customized
Single eyes
Asian
1 Eyes0 Eyes1 Eyes
Race/Ethnicity, Customized
Single eyes
Black
2 Eyes1 Eyes3 Eyes
Race/Ethnicity, Customized
Single eyes
Hispanic/Latino
6 Eyes2 Eyes8 Eyes
Race/Ethnicity, Customized
Single eyes
White
1 Eyes1 Eyes2 Eyes
Region of Enrollment
United States
12 Eyes6 Eyes18 Eyes
Retinal nerve fiber layer (RNFL) thickness
Fellow eyes
53.5 microns
STANDARD_DEVIATION 7.78
75 microns
STANDARD_DEVIATION 2.83
64.25 microns
STANDARD_DEVIATION 13.3
Retinal nerve fiber layer (RNFL) thickness
Single eyes
72.9 microns
STANDARD_DEVIATION 11.73
75.75 microns
STANDARD_DEVIATION 17.29
73.71 microns
STANDARD_DEVIATION 12.89
Sex: Female, Male
Fellow eyes
Female
2 Eyes2 Eyes4 Eyes
Sex: Female, Male
Fellow eyes
Male
0 Eyes0 Eyes0 Eyes
Sex: Female, Male
Single eyes
Female
5 Eyes3 Eyes8 Eyes
Sex: Female, Male
Single eyes
Male
5 Eyes1 Eyes6 Eyes
Visual field mean deviation (VFMD)
Fellow eyes
-4.74 dB-2.55 dB-3.65 dB
STANDARD_DEVIATION 1.1
Visual field mean deviation (VFMD)
Single eyes
-8.45 dB
STANDARD_DEVIATION 4.31
-4.20 dB
STANDARD_DEVIATION 4.89
-7.24 dB
STANDARD_DEVIATION 4.73

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 120 / 6
other
Total, other adverse events
3 / 120 / 6
serious
Total, serious adverse events
0 / 120 / 6

Outcome results

Primary

Change in Best-corrected Visual Acuity (BCVA) at 1 and 3 Months

Using quantitative BCVA measurements, as determined by ETDRS chart at 4 meters, to compare ocular safety and effectiveness between arms. Since the outcome examined was a change, baseline, month 1 postop, and month 3 postop data were used in the calculations. 1 month change calculation: Month 1 postop value - Baseline value 3 month change calculation: Month 3 postop value - Baseline value

Time frame: 1 month postop, 3 months postop

Population: LogMAR visual acuity changes from baseline to months 1 and 3 were compared between groups. Please note that for logMAR, lower values on the scale correspond with better visual acuity.

ArmMeasureGroupValue (MEAN)Dispersion
DEXTENZA® ArmChange in Best-corrected Visual Acuity (BCVA) at 1 and 3 MonthsLogMAR change by Month 1-0.60 logMARStandard Deviation 0.63
DEXTENZA® ArmChange in Best-corrected Visual Acuity (BCVA) at 1 and 3 MonthsLogMAR change by Month 3-0.53 logMARStandard Deviation 0.66
Prednisolone Acetate 1% ArmChange in Best-corrected Visual Acuity (BCVA) at 1 and 3 MonthsLogMAR change by Month 1-0.16 logMARStandard Deviation 0.21
Prednisolone Acetate 1% ArmChange in Best-corrected Visual Acuity (BCVA) at 1 and 3 MonthsLogMAR change by Month 3-0.20 logMARStandard Deviation 0.31
Primary

Change in Intraocular Pressure (IOP) at 1 and 3 Months

Using quantitative IOP readings to compare ocular safety between arms. Since the outcome examined was a change, baseline, month 1 postop, and month 3 postop data were used in the calculations. 1 month change calculation: Month 1 postop value - Baseline value 3 month change calculation: Month 3 postop value - Baseline value

Time frame: 1 month postop, 3 months postop

Population: Change in IOP from baseline at months 1 and 3 were compared between groups.

ArmMeasureGroupValue (MEAN)Dispersion
DEXTENZA® ArmChange in Intraocular Pressure (IOP) at 1 and 3 MonthsChange in IOP by Month 1-2.89 mmHgStandard Deviation 2.37
DEXTENZA® ArmChange in Intraocular Pressure (IOP) at 1 and 3 MonthsChange in IOP by Month 3-2.05 mmHgStandard Deviation 3.3
Prednisolone Acetate 1% ArmChange in Intraocular Pressure (IOP) at 1 and 3 MonthsChange in IOP by Month 1-6.60 mmHgStandard Deviation 3.29
Prednisolone Acetate 1% ArmChange in Intraocular Pressure (IOP) at 1 and 3 MonthsChange in IOP by Month 3-4.6 mmHgStandard Deviation 3.29
Primary

Difference in Eyes With Adverse Events Between Groups

Using the average number of eyes with adverse events that occur in each arm to compare safety between arms through 3 months of postoperative follow-up

Time frame: Up to 3 months postop

ArmMeasureValue (NUMBER)
DEXTENZA® ArmDifference in Eyes With Adverse Events Between Groups3 Number of eyes with adverse events
Prednisolone Acetate 1% ArmDifference in Eyes With Adverse Events Between Groups0 Number of eyes with adverse events
Primary

Difference in Number of Glaucoma Medications at 3 Months

Using the average number of glaucoma medications added or subtracted to each arm to compare safety between arms. These calculations were performed by subtracting the baseline glaucoma medications from the glaucoma medications at month 3.

Time frame: 3 months postop

Population: Change in number of glaucoma medications between groups from baseline to month 3 were compared.

ArmMeasureValue (MEAN)Dispersion
DEXTENZA® ArmDifference in Number of Glaucoma Medications at 3 Months-0.45 number of medicationsStandard Deviation 0.69
Prednisolone Acetate 1% ArmDifference in Number of Glaucoma Medications at 3 Months-0.60 number of medicationsStandard Deviation 0.89
Secondary

Difference in Number of Eyes With Absence of Anterior Chamber (AC) Cells at 1 Month

Comparing the number of eyes with complete AC clearance of inflammatory cells, as determined by slit lamp exam, between arms to evaluate drug effectiveness

Time frame: 1 month postop

Population: Counts indicate the number of eyes with no AC cell or flare present at 1 month follow-up.

ArmMeasureValue (COUNT_OF_UNITS)
DEXTENZA® ArmDifference in Number of Eyes With Absence of Anterior Chamber (AC) Cells at 1 Month7 Eyes
Prednisolone Acetate 1% ArmDifference in Number of Eyes With Absence of Anterior Chamber (AC) Cells at 1 Month5 Eyes
Secondary

Difference in Ocular Comfort Index (OCI) Score at 1 Month

Using the Ocular Comfort Index survey to compare patients' self-reported ocular comfort between arms, providing insight into drug effectiveness. The minimum score is 0 and the maximum score is 100, with 100 indicating the most ocular irritation and discomfort and 0 indicating the least ocular irritation and discomfort

Time frame: 1 month postop

Population: Scores were compared between groups at month 1. Higher scores correspond to greater ocular discomfort. Of the 18 eyes that received baseline analysis and surgery, only 10 completed the month 1 OCI survey.

ArmMeasureValue (MEAN)Dispersion
DEXTENZA® ArmDifference in Ocular Comfort Index (OCI) Score at 1 Month25.96 score on a scaleStandard Deviation 12.5
Prednisolone Acetate 1% ArmDifference in Ocular Comfort Index (OCI) Score at 1 Month10.71 score on a scaleStandard Deviation 15.15
Secondary

Difference in Ocular Comfort Index (OCI) Score at 3 Months

Using the Ocular Comfort Index survey to compare patients' self-reported ocular comfort between arms, providing insight into drug effectiveness. The minimum score is 0 and the maximum score is 100, with 100 indicating the most ocular irritation and discomfort and 0 indicating the least ocular irritation and discomfort

Time frame: 3 months postop

Population: Scores were compared between groups at month 3. Higher scores correspond to greater ocular discomfort.

ArmMeasureValue (MEAN)Dispersion
DEXTENZA® ArmDifference in Ocular Comfort Index (OCI) Score at 3 Months21.20 score on a scaleStandard Deviation 14.67
Prednisolone Acetate 1% ArmDifference in Ocular Comfort Index (OCI) Score at 3 Months16.32 score on a scaleStandard Deviation 16.49
Secondary

Number of Eyes With Presenting With Cystoid Macular Edema (CME) as Seen on Optical Coherence Tomography (OCT)

Using the number of CME cases in each arm, as visualized by OCT, to compare safety and effectiveness between arms

Time frame: 3 months postop

ArmMeasureValue (COUNT_OF_UNITS)
DEXTENZA® ArmNumber of Eyes With Presenting With Cystoid Macular Edema (CME) as Seen on Optical Coherence Tomography (OCT)0 Eyes
Prednisolone Acetate 1% ArmNumber of Eyes With Presenting With Cystoid Macular Edema (CME) as Seen on Optical Coherence Tomography (OCT)0 Eyes
Secondary

Percentage of Eyes Requiring Supplemental Prednisolone Acetate 1% Eye Drops

Recording the percentage of eyes in the DEXTENZA® arm that require anti-inflammatory rescue with supplemental ocular steroid. This will provide insight into anti-inflammatory effectiveness of DEXTENZA®

Time frame: Up to 3 months postop

Population: Of the 14 consented eyes in the DEXTENZA arm noted in the started row of the participant flow data table, 2 eyes met exclusion criteria, thus leaving 12 eligible eyes for further analysis.

ArmMeasureValue (NUMBER)
DEXTENZA® ArmPercentage of Eyes Requiring Supplemental Prednisolone Acetate 1% Eye Drops25 Percentage of eyes

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026