ClinicalTrials.gg
CompletedNCT03126786TYBEEUpdated May 13, 2021Results posted

Suprachoroidal CLS-TA With Intravitreal Aflibercept Versus Aflibercept Alone in Subject With Diabetic Macular Edema

A Phase 2 interventional study of IVT aflibercept and Sham SC in Diabetic Macular Edema, sponsored by Clearside Biomedical, Inc.. Completed at 29 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-05-13.

Sponsored by Clearside Biomedical, Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
71
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this trial is to evaluate the safety and efficacy of suprachoroidal CLS-TA used with intravitreal aflibercept in subjects with DME.

Read the detailed description

This is a Phase 2, multicenter, randomized, double-masked, controlled, parallel-group study of 6 months duration in treatment-naïve subjects with DME. This study is projected to enroll approximately 60 subjects, randomly assigned 1:1 to one of two treatment groups.

The study design includes up to 8 clinic visits over approximately 24 weeks. Subjects will attend visits for Screening (Visit 1, Days -30 to 0); Randomization and Baseline (Visit 2, Day 0 before dosing); Dosing and Evaluation (Visit 2 after dosing to Visit 5, Day 0 through Week 12); As-needed (PRN) Dosing and Follow up (Visit 6 through Visit 7, Week 16 through Week 20), and End of Study (Visit 8, Week 24).

02

Conditions studied

  • Diabetic Macular Edema

Keywords

  • Diabetes Mellitus
  • Diabetic Retinopathy
  • Microneedle
  • Mircoinjection
  • Triamcinolone
  • Choroid
  • Choroid Injection
  • Aflibercept
  • Suprachoroidal
  • Triamcinolone acetonide
03

In context

Diabetes Mellitus

8,290 studies on the registry are indexed under Diabetes Mellitus; 1,077 are open to participants now.

This study's enrollment of 71 is below the median of 80 across 6,023 interventional studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Clearside Biomedical, Inc. is the lead sponsor of 14 studies on the registry; none are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 7 (88%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Clinical diagnosis of type 1 or type 2 DM
  • DME with central involvement (> 300 µm in the central subfield on spectral-domain optical coherence tomography [SD-OCT], in the study eye
  • ETDRS BCVA score of ≥ 20 letters read and ≤ 70 letters read in the study eye
  • Naïve to local pharmacologic treatment for DME in the study eye

Exclusion criteria

Exclusion Criteria:

  • IOP > 21 mmHg in the study eye at Visit 1 (Day -30 to -1); subjects are not excluded if IOP is \<22 mmHg in the study eye with no more than 1 IOP lowering medication
  • Any previous treatment in the study eye with an ocular implant
  • Has significant media opacity precluding evaluation of retina and vitreous in the study eye.
  • History of glaucoma or optic nerve head change consistent with glaucoma damage
  • History of glaucoma surgery
  • History of IOP elevation in response to corticosteroid treatment ("steroid responder")
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
71 participants (actual)

Study arms

  • Active comparator
    Active

    Treatment will consist of IVT injection of Aflibercept followed by an SC injection of CLS-TA

    Drug: IVT aflibercept · Drug: SC CLS-TA

  • Sham comparator
    Control

    Treatment will consist of IVT aflibercept injection followed by a sham SC procedure

    Drug: IVT aflibercept · Drug: Sham SC

Interventions

  • IVT aflibercept \[2 mg/0.05 mL\]

    Also known as: Eylea

  • DrugSham SC

    sham SC

    Also known as: suprachoroidal sham

  • CLS-TA \[4 mg/100 μL\] SC injection

    Also known as: Triamcinolone Acetonide

06

What researchers measure

Primary outcomes

  1. Mean Change From Baseline in Best Corrected Visual Acuity Letter Score

    Best corrected visual acuity (BCVA) refers to the measurement of the best possible vision that can be achieved following refraction or correction. BCVA was assessed following the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol and was measured in the number of letters read correctly on an ETDRS eye chart. An increase from the pre-treatment state in BCVA of 15 letters or more represents a clinically meaningful improvement.

    Time frame: Baseline, 6 months

Secondary outcomes

  1. Mean Change From Baseline in Central Subfield Thickness

    Central subfield thickness (CST) is a diagnostic measurement used in identifying the presence of edema in the circular area 1 mm in diameter centered around the fovea. CST was measured using spectral domain optical coherence tomography (SD-OCT). A masked reading center graded the SD-OCT digital images. A negative change from baseline value represents a reduction in macular edema.

    Time frame: Baseline, 6 months

07

Results

Posted May 13, 2021

Participant flow

Participant flow — Overall Study
MilestoneActiveControl
Started3635
Completed3033
Not completed62
Withdrew: Adverse event30
Withdrew: Lost to follow-up01
Withdrew: Withdrawal by subject31

Outcome measures

PrimaryMean Change From Baseline in Best Corrected Visual Acuity Letter Score

Best corrected visual acuity (BCVA) refers to the measurement of the best possible vision that can be achieved following refraction or correction. BCVA was assessed following the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol and was measured in the number of letters read correctly on an ETDRS eye chart. An increase from the pre-treatment state in BCVA of 15 letters or more represents a clinically meaningful improvement.

Time frame:
Baseline, 6 months
Reported as:
Least squares mean · letters
Mean Change From Baseline in Best Corrected Visual Acuity Letter Score
lettersActiveControl
Mean Change From Baseline in Best Corrected Visual Acuity Letter Score11.4 ± 1.6313.8 ± 1.59
Statistical analysis
  • Active vs Control · Mixed model for repeat measures · p = 0.288 (There was a single primary outcome tested at a single primary endpoint, therefore no adjustments for multiple comparisons were performed. The primary endpoint was assess with a 2-sided alpha level of 0.100.) · Mean difference (final values): -2.4 · 90% CI -6.2 to 1.4Estimated Value calculated as Active minus Control.
SecondaryMean Change From Baseline in Central Subfield Thickness

Central subfield thickness (CST) is a diagnostic measurement used in identifying the presence of edema in the circular area 1 mm in diameter centered around the fovea. CST was measured using spectral domain optical coherence tomography (SD-OCT). A masked reading center graded the SD-OCT digital images. A negative change from baseline value represents a reduction in macular edema.

Time frame:
Baseline, 6 months
Reported as:
Least squares mean · microns
Mean Change From Baseline in Central Subfield Thickness
micronsActiveControl
Mean Change From Baseline in Central Subfield Thickness-212.1 ± 13.83-178.6 ± 13.61

Adverse events

Collected over Adverse events were collected over 24 weeks of follow-up.. Non-serious events are listed at a 3% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Active2/36 (5.6%)6/36 (16.7%)10/36 (27.8%)
Control0/35 (0%)4/35 (11.4%)11/35 (31.4%)
Most frequent serious events
Showing 10 of 14
Most frequent serious events
EventActiveControl
PneumoniaInfections and infestations2/360/35
Acute left ventricular failureCardiac disorders0/361/35
Acute myocardial infarctionCardiac disorders0/361/35
OsteomyelitisInfections and infestations0/361/35
Diabetic neuropathic ulcerSkin and subcutaneous tissue disorders0/361/35
AnaemiaBlood and lymphatic system disorders1/360/35
Cardiac arrestCardiac disorders1/360/35
Hepatorenal syndromeHepatobiliary disorders1/360/35
Pneumonia staphylococcalInfections and infestations1/360/35
Femur fractureInjury, poisoning and procedural complications1/360/35
Most frequent other events
Most frequent other events
EventActiveControl
HypertensionVascular disorders3/364/35
NasopharyngitisInfections and infestations0/363/35
Intraocular pressure increasedEye disorders3/361/35
Eye painEye disorders0/362/35
Retinal exudatesEye disorders0/362/35
AnxietyPsychiatric disorders2/360/35
Conjunctival haemorrhageEye disorders2/361/35

Baseline characteristics

The Safety population included all randomly assigned subjects who were administered at least 1 dose of the study drug.

Age, Categorical
Age, Categorical(Participants)ActiveControlTotal
<=18 years000
Between 18 and 65 years252348
>=65 years111223
Age, Continuous
Age, Continuous(years)ActiveControlTotal
Mean59.8 ± 10.1659.2 ± 12.8959.5 ± 11.51
Sex: Female, Male
Sex: Female, Male(Participants)ActiveControlTotal
Female101121
Male262450
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)ActiveControlTotal
Hispanic or Latino12921
Not Hispanic or Latino242650
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)ActiveControlTotal
American Indian or Alaska Native101
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American325
White313263
More than one race011
Unknown or Not Reported101
Region of Enrollment
Region of Enrollment(participants)ActiveControlTotal
United States363571
Best corrected visual acuity
Best corrected visual acuity(letters)ActiveControlTotal
Mean57.1 ± 13.0058.1 ± 11.3357.6 ± 12.13
08

Study locations

29 sites
  • Retinal Consultants of Arizona and Retinal Research Institute
    Phoenix, Arizona 85014-2709, United States
  • Retina Centers, PC
    Tucson, Arizona 85704, United States
  • California Retina Consultants
    Bakersfield, California 93309, United States
  • Retina Vitreous Medical Group Clinical Research
    Beverly Hills, California 90211-1841, United States
  • Northern California Retina Vitreous Associates Medical Group, Inc.
    Mountain View, California 94040, United States
  • Retina Institute of California
    Palm Desert, California 92260, United States
  • Retina Consultants San Diego
    Poway, California 92064-2526, United States
  • MedEye Associates
    Miami, Florida 33143-5188, United States
  • Retina Specialty Institute
    Pensacola, Florida 32503, United States
  • Sarasota Retina Institute
    Sarasota, Florida 34239, United States
  • Center for Retina and Macular Disease
    Winter Haven, Florida 33880, United States
  • Emory Eye Center
    Augusta, Georgia 30909-6440, United States
  • Marietta Eye Clinic
    Marietta, Georgia 30060, United States
  • Midwest Eye Institute
    Indianapolis, Indiana 46290, United States
  • Retina and Vitrous Associates of Kentucky
    Lexington, Kentucky 40509, United States
  • The Johns Hopkins Wilmer Eye Institute
    Baltimore, Maryland 21287, United States
  • Cumberland Valley Retina Consultants
    Hagerstown, Maryland 21740-5940, United States
  • Retina Associates of NJ
    Teaneck, New Jersey 07666, United States
  • Western Carolina Retinal Associates
    Asheville, North Carolina 28803, United States
  • Oregon Retina Institute
    Medford, Oregon 97504, United States
  • Black Hills Regional Eye Institute
    Rapid City, South Dakota 57701-7374, United States
  • Retina Research Institute of Texas
    Abilene, Texas 79606-1224, United States
  • Texas Retina Associates-Arlington
    Arlington, Texas 76012-2505, United States
  • Austin Retina Associates
    Austin, Texas 78705, United States
  • Texas Retina Associates
    Dallas, Texas 75231, United States
  • Valley Retina Institute, P.A.
    McAllen, Texas 78503, United States
  • Valley Retina Institute
    McAllen, Texas 78503, United States
  • Medical Center Ophthalmology Associates
    San Antonio, Texas 78240-1502, United States
  • Retina Consultants of Houston
    The Woodlands, Texas 77384, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 13, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03126786
Lead sponsor
Clearside Biomedical, Inc.
Responsible party
Sponsor
First posted
Apr 24, 2017
Start date
Jul 11, 2017
Primary completion
Apr 17, 2018
Completion
Apr 17, 2018
Results posted
May 13, 2021
Last update
May 13, 2021

Study contacts

Thomas Ciulla, MD
study director · Clearside Biomedical

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Triamcinolone Acetonide

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