Macular EdemaPhase 3BEACONNCT04592419
A Study to Evaluate the Efficacy, Durability, and Safety of KSI-301 Compared to Aflibercept in Patients With Macular Edema Due to Retinal Vein Occlusion (RVO)
A Phase 3 study testing KSI-301 and Aflibercept in people with Macular Edema and Retinal Vein Occlusion, run by Kodiak Sciences Inc at 141 sites in 12 countries.
Trial summary
This Phase 3 study will evaluate the efficacy, durability, and safety of KSI-301 compared to aflibercept, in participants with macular edema due to treatment-naïve branch (BRVO) or central retinal vein occlusion (CRVO). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Macular Edema, Retinal Vein Occlusion
- What is being tested?
- KSI-301 and Aflibercept
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 568 participants
- Where
- 141 sitesin 12 countries
- Study dates
- 25 Sep 2020to 19 Jan 2023
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Signed informed consent prior to participation in the study.
- Treatment-naïve macular edema of 6 months duration or less due to CRVO or BRVO. Participants with hemiretinal vein occlusion will be included as CRVO.
- BCVA ETDRS letter score between 80 and 25 (20/25 to 20/320 Snellen equivalent), inclusive in the Study Eye.
- CST of ≥ 320 microns on SD-OCT (Heidelberg Spectralis or equivalent on other OCT instruments) as determined by the Reading Center
- Decrease in vision determined by the Investigator to be primarily the result of ME secondary to RVO.
- Other protocol-specified inclusion criteria may apply.
Who cannot join
- Macular edema in the Study Eye for reasons other than RVO
- Active iris or angle neovascularization, neovascular glaucoma, neovascularization of the optic disc, retinal neovascularization or vitreous hemorrhage in the Study Eye.
- Uncontrolled glaucoma in the Study Eye.
- Active retinal disease other than the condition under investigation in the Study Eye.
- Any history or evidence of a concurrent ocular condition present, that in the opinion of the Investigator could require either medical or surgical intervention alter visual acuity during the study
- Active or suspected ocular or periocular infection or inflammation
Show all 12Show fewer
- Any prior use of an approved or investigational treatment for macular edema secondary to RVO in the Study Eye (e.g. anti-VEGF, intraocular or periocular steroids, macular laser photocoagulation).
- Women who are pregnant or lactating or intending to become pregnant during the study.
- Uncontrolled blood pressure defined as a systolic value ≥ 180 mmHg or diastolic value ≥100 mmHg while at rest
- Recent history (within the 6 months prior to screening) of myocardial infarction, stroke, transient ischemic attack, acute congestive heart failure or any acute coronary event.
- History of a medical condition that, in the judgment of the Investigator, would preclude scheduled study visits, completion of the study, or a safe administration of investigational product.
- Other protocol-specified exclusion criteria may apply.
Trial locations and contacts
141 sites in 12 countries.
141 sites in 12 countries
United States81 sites
Retina Research Institute of Texas
Abilene, Texas, 79606
Florida Eye Clinic
Altamonte Springs, Florida, 32701
Asheville Eye Associates
Asheville, North Carolina, 28803
Southeast Retina Center
Augusta, Georgia, 30909
Austin Research Center for Retina
Austin, Texas, 78705
Austin Retina Associates
Austin, Texas, 78705
Retina Research Center
Austin, Texas, 78705
Retina Associates of Cleveland
Beachwood, Ohio, 44122
Retina Research of Beaufort
Beaufort, South Carolina, 29902
Retina Vitreous Associates
Beverly Hills, California, 90211
The Retina Center of New Jersey
Bloomfield, New Jersey, 07017
Retina Group of Florida
Boca Raton, Florida, 33431
Ophthalmic Consultants of Boston
Boston, Massachusetts, 02114
Florida Eye Microsurgical Institute
Boynton Beach, Florida, 33426
Charlotte Eye Ear Nose & Throat Associates, P.A.
Charlotte, North Carolina, 28210
Retina Group of Washington
Chevy Chase, Maryland, 20815
The Macula Center/ Blue Ocean Clinical Research
Clearwater, Florida, 33761
Retina Associates of Cleveland
Cleveland, Ohio, 44130
Conneticut Eye Consultants
Danbury, Connecticut, 06810
Rand Eye Institute
Deerfield Beach, Florida, 33064
Vitreoretinal Surgery PA
Edina, Minnesota, 55435
Talley Eye
Evansville, Indiana, 47710
National Ophthalmic Research Institute
Fort Myers, Florida, 33912
Eye Medical Center of Fresno
Fresno, California, 93720
Retina Consultants of Orange County
Fullerton, California, 92835
Vitreo Retinal Associates
Gainesville, Florida, 32607
Charles Retina Institute
Germantown, Tennessee, 38138
Foundation for Vision Research
Grand Rapids, Michigan, 49525
Retina Consultants of Carolina
Greenville, South Carolina, 29605
Cumberland Valley Retina Consultants PC
Hagerstown, Maryland, 21740
Vitreo Retinal Consultants
Hauppauge, New York, 11788
Retina Consultants of NV
Henderson, Nevada, 89052
Retina Consultants of Texas
Houston, Texas, 77030
Retina Consultants of Texas - (Katy)
Katy, Texas, 77494
Southeastern Retina Associates PC
Knoxville, Tennessee, 37909
UCSD Jacobs Retina Center
La Jolla, California, 92037
Charleston Neuroscience Institute
Ladson, South Carolina, 29456
Colorado Retina Associates PC
Lakewood, Colorado, 80228
Retina Associates PA
Lenexa, Kansas, 66215
Retina Associates of Kentucky
Lexington, Kentucky, 40509
Retina-Vitreous Surgeons of Central NY
Liverpool, New York, 13088
Florida Eye Associates
Melbourne, Florida, 32901
Northern California Retina Vitreous Associates
Mountain View, California, 94040
Tennessee Retina PC
Nashville, Tennessee, 37203
Ocli Vision
Oceanside, New York, 11572
Florida Retina Institute
Orlando, Florida, 32806
Retina Specialty Institute
Pensacola, Florida, 32503
Northwest Arkansas Retina Associates
Phoenix, Arizona, 85014
Retinal Research Institute, LLC
Phoenix, Arizona, 85014
Texas Retina Associates
Plano, Texas, 75075
Fort Lauderdale Eye Institute
Plantation, Florida, 33324
Maine Eye Center
Portland, Maine, 04102
Retina Northwest
Portland, Oregon, 97210
Retina Consultants of San Diego
Poway, California, 92064
Black Hills Regional Eye Institute
Rapid City, South Dakota, 57701
Retina Consultants of Southern California
Redlands, California, 92374
Sierra Eye Associates
Reno, Nevada, 89502
Retina Institute of Virginia
Richmond, Virginia, 23235
Retina Associates of Western NY
Rochester, New York, 14620
Austin Retina Associates (Round Rock)
Round Rock, Texas, 78681
Associated Retinal Consultants PC
Royal Oak, Michigan, 78073
Retinal Consultants Medical Group Inc
Sacramento, California, 95819
Retina Consultants, LLC
Salem, Oregon, 97302
Medical Center Ophthalmology Associates
San Antonio, Texas, 78240
Orange County Retina Medical Group
Santa Ana, California, 92705
California Retina Consultants
Santa Maria, California, 93454
Retina Center Northwest
Silverdale, Washington, 98383
Spokane Eye
Spokane, Washington, 99204
Springfield Clinic LLP
Springfield, Illinois, 62703
Cascade Medical Research Institute
Springfield, Oregon, 97477
Southern Vitreoretinal Associates
Tallahassee, Florida, 32308
Retina Associates of Florida
Tampa, Florida, 33609
NJ Retina
Teaneck, New Jersey, 07605
Retina Consultants of Texas - (Woodlands)
The Woodlands, Texas, 77384
Retina Group of New England
Waterford, Connecticut, 06385
Pametto Retina Center
West Columbia, South Carolina, 29501
Wolfe Eye Clinic
West Des Moines, Iowa, 50266
Vitreo Retinal Consultants and Surgeons
Wichita, Kansas, 67214
Strategic Clinical Research Group, LLC
Willow Park, Texas, 76087
Center for Retina & Macular Disease
Winter Haven, Florida, 33880
Vitreo Retinal Associates PC
Worcester, Massachusetts, 01603
Spain10 sites
Hospital dos de Maig
Barcelona, 08025
Hospital Clinic de Barcelona
Barcelona, 08028
Instituto Clinico Quirurgico de Oftalmologia
Bilbao, 48010
Hospital Universitario de Bellvitge
L'Hospitalet de Llobregat, Barcelona, 08907
Hospital Universitario Puerta de Hierro - Majadahonda
Majadahonda, Madrid, 28222
Hospital Universitari General de Catalunya - Grupo Quironsalud
Sant Cugat del Vallès, Barcelona, 08195
Hospital Universitari i Politecnic La Fe de Valencia
Valencia, 46026
Hospital Universitario Rio Hortega
Valladolid, 47012
Hospital Clinico Universitario Lozano Blesa
Zaragoza, 50009
Hospital Universitario Miguel Servet
Zaragoza, 50009
Israel9 sites
Bnai Zion
Haifa, 31048
Rambam MC
Haifa, 31096
Hadassah University Hospital
Jerusalem, 91120
Meir MC
Kfar Saba, 44281
Rabin Medical Center
Petah Tikva, 49100
Kaplan MC
Rehovot, 76100
Tel Aviv Sourasky Medical Center
Tel Aviv, 6423906
Assuta HaShalom
Tel Aviv, 6789140
Shamir Medical Center Assaf Harofeh
Tzrifin, 70300
France8 sites
Centre Hospitalier Universitaire de Bordeaux, Hopital Pellegrin
Bordeaux, Gironde, 33076
Centre Hospitalier Intercommunal de Créteil
Créteil, 94000
CHRU Dijon Complexe Du Bocage
Dijon, Côte-d'Or, 21079
Hôpital de La Croix Rousse
Lyon, Rhône, 69317
Centre Paradis Monticelli
Marseille, 13008
Hôpital Lariboisière - Service Pharmacie
Paris, 75 010
Fondation Rothschild
Paris, 75019
CHRU de Poitiers La Miletrie
Poitiers, 86021
Poland6 sites
Oftalmika Sp. z o.o.
Bydgoszcz, 85-631
Optimum Profesorskie Centrum Okulistyki
Gdansk, Pomeranian Voivodeship, 80-809
Uniwersyteckie Centrum Kliniczne Im. Prof. K. Gibinskiego Slaskiego Uniwersytetu Medycznego w Katowi
Katowice, Silesian Voivodeship, 40-514
Gabinet Okulistyczny Prof. Edward Wylegala
Katowice, Silesian Voivodeship, 40-594
Dr Nowosielska Okulistyka i Chirurgia Oka
Warsaw, 01-249
Uniwersytecki Szpital Kliniczny im. Jana Mikulicza Radeckiego we Wroclawiu
Wroclaw, 50-556
Hungary5 sites
MH EK Honvedkorhaz SzemEszeti Osztaly
Budapest, 1062
Semmelweis Egyetem
Budapest, 1085
Bajcsy-Zsilinszky Korhaz es Rendelointezet
Budapest, 1106
Budapest Retina Associates Kft
Budapest, 1133
Jahn Ferenc Dél-Pesti Kórház és Rendelointézet
Budapest, 1214
Italy5 sites
Ospedale Clinicizzato SS Annunziata
Chieti, Abruzzo, 66100
Ospedale San Raffaele S.r.l. - PPDS
Milan, Lombardy, 20132
Fondazione PTV Policlinico Tor Vergata
Rome, Lazio, 00133
Fondazione Policlinico Universitario A Gemelli
Rome, Lazio, 00168
Azienda Sanitaria Universitaria Integrata di Udine - PO Universitario Santa Maria della Misericordia
Udine, 33100
Slovakia5 sites
Fakultna nemocnica s poliklinikou F. D. Roosevelta
Banská Bystrica, 974 01
Univerzitna nemocnica Bratislava
Bratislava, 826 06
Uvea Klinika, S.R.O.
Martin, 036 01
Nemocnica s poliklinikou Trebisov a.s.
Trebišov, 075 01
Fakultna nemocnica Trencin
Trencín, 911 01
Germany4 sites
St. Elisabeth Krankenhaus
Cologne, North Rhine-Westphalia, 50935
Miriam Kannenbaeumer or Andrea Koschinski
Münster, North Rhine-Westphalia, 48145
Dietrich Bonhoeffer Klinikum Neubrandenburg
Neubrandenburg, Mecklenburg-Vorpommern, 17036
Universitätsklinikum Regensburg
Regensburg, Bavaria, 93053
Latvia4 sites
Signes Ozolinas Doctor Praxis In Ophthalmology
Jelgava, LV-3001
Pauls Stradins Clinical University Hospital
Riga, LV-1002
Riga Eastern Clinical University Hospital Clinic Bikernieki
Riga, LV-1006
Latvian American Eye Center
Riga, LV-1009
Czechia3 sites
OFTEX s.r.o.
Pardubice, 53002
Vseobecna Fakultni
Prague, 128 08
Lekarna BENU
Prague, 150 00
Puerto Rico1 site
Emanuelli Research & Development Center LLC
Arecibo, 00612
About this study
Official title: A Prospective, Randomized, Double-masked, Active Comparator-controlled, Multi-center, Two-arm, Phase 3 Study to Evaluate the Efficacy and Safety of Intravitreal KSI-301 Compared With Intravitreal Aflibercept in Participants With Visual Impairment Due to Treatment-naïve Macular Edema Secondary to Retinal Vein Occlusion (RVO)
This Phase 3 study will evaluate the efficacy, durability, and safety of KSI-301 compared to aflibercept, in participants with macular edema due to treatment-naïve branch (BRVO) or central retinal vein occlusion (CRVO).
Read the detailed description
This is a Phase 3, prospective, randomized, double-masked, two-arm, multi-center non-inferiority study evaluating the efficacy and safety of repeated intravitreal dosing of KSI-301 5 mg in participants with visual impairment due to treatment-naïve macular edema secondary to RVO (either branch or central type).
The primary endpoint will be assessed at Week 24; additional secondary endpoints for efficacy will be assessed at Week 24 and Week 48.
- Conditions
- Macular Edema, Retinal Vein Occlusion
- Being tested
- KSI-301, Aflibercept, Sham Procedure
- Keywords
- RVO, Kodiak, KSI-301, Vascular endothelial growth factor, Anti-VEGF, VEGF, Antibody biopolymer conjugate, Retinal Degeneration, Retinal Diseases, Eye Diseases, Vision Disorders, Vision, low, Aflibercept, Eylea
- Medical subject headings
- Macular Edema, Retinal Vein Occlusion, Retinal Degeneration, Retinal Diseases, Eye Diseases, Vision Disorders, Vision, Low
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
KSI-301Drug
Intravitreal Injection
AfliberceptDrug
Also called Eylea
Intravitreal Injection
Sham ProcedureOther
The sham is a procedure that mimics an intravitreal injection. It involves pressing the blunt end of an empty syringe (without a needle) against the anesthetized eye. It will be administered to participants in both treatments arms at applicable visits to maintain masking.
| Study group | Role | What they receive |
|---|---|---|
| KSI-301 (Arm A) | Experimental | Intravitreal injection of KSI-301 (5 mg) at Day 1, Week 4, and once every 8 weeks through Week 20 followed by an individualized dosing regimen of Intravitreal injection of KSI-301 (5 mg) from Week 24 to Week 44.
In the Extension Phase, participants randomized to KSI-301 (5 mg) in the Primary Study will continue to receive KSI-301 (5 mg) based on protocol-defined disease activity criteria. Receives: Drug: KSI-301; Other: Sham Procedure |
| Aflibercept (Arm B) | Active comparator | Intravitreal injection of aflibercept (2 mg) once every 4 through Week 20 followed by an individualized dosing regimen of Intravitreal injection of Aflibercept (2 mg) once every 4 weeks from Week 24 to Week 44.
In the Extension Phase, participants randomized to aflibercept in the Primary Study will cross over to treatment with KSI-301 (5 mg). They will receive their first dose of KSI-301 (5 mg) at Week 48 and will receive additional treatment with KSI-301 (5 mg) based on protocol-defined disease activity criteria. Receives: Drug: Aflibercept; Other: Sham Procedure |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean Change in Best Corrected Visual Acuity (BCVA) From Day 1 to Week 24 in BRVO Participants.
BCVA as a continuous variable measured at each study visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA approach.
Measured: Day 1 to Week 24
Mean Change in Best Corrected Visual Acuity (BCVA) From Day 1 to Week 24 in All RVO Patients.
BCVA as a continuous variable measured at each study visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA approach.
Measured: Day 1 to Week 24
Secondary outcomes (8)
Mean Change From Baseline in BCVA (ETDRS Letters) by Visit Over Time up to Week 48 for All RVO Participants.
BCVA as a continuous variable measured at each study visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA approach.
Measured: Day 1 - Week 48
Percentage of Participants Who Gain ≥ 5, ≥10 and ≥15 Letters From Baseline Over Time up to Week 48 for All RVO Participants.
Number of participants in each treatment arm who meet specified criteria at each visit from Week 1 through Week 48. Percentages are 100*n/N.
Measured: Day 1 - Week 48
Percentage of Participants Who Lose ≥ 5, ≥10 and ≥15 ETDRS Letters From Baseline Over Time up to Week 48 for All RVO Participants
Number of participants in each treatment arm who meet specified criteria at each visit from Week 1 through Week 48. Percentages are 100*n/N.
Measured: Day 1 - Week 48
Percentage of Participants With BCVA Snellen Equivalent of 20/40 or Better Over Time (≥69 ETDRS Letters) for All RVO Participants.
Percentage of participants with BCVA Snellen Equivalent of 20/40 or Better from Baseline to Week 48. Snellen Equivalent of 20/40 is 69 ETDRS letters. Number of participants in each treatment arm who meet specified criteria at each visit from Baseline through Week 48. Percentages are 100*n/N.
Measured: Day 1 - Week 48.
Percentage of Participants With BCVA Snellen Equivalent of 20/200 or Worse (≤ 38 ETDRS Letters) Over Time for All RVO Participants.
Percentage of Participants with BCVA Snellen Equivalent of 20/200 or Worse from Baseline to Week 48. Snellen Equivalent of 20/200 is 38 ETDRS letters. Number of participants in each treatment arm who meet specified criteria at each visit from Baseline through Week 48. Percentages are 100*n/N.
Measured: Baseline - Week 48
Percentage of Participants With Absence of Macular Edema (Defined as OCT CST < 325 Microns) Over Time for All RVO Participants.
Macular Edema (ME) is assessed by optical coherence tomography (OCT) central subfield thickness (CST). A thickness of less than 325 microns is considered absence of ME. Proportion of participants with Absence of Macular Edema from Baseline to Week 48. Number of participants in each treatment arm who meet specified criteria at each visit from Week 1 through Week 48. Percentages are 100*n/N.
Measured: Baseline - Week 48
Mean Change in OCT Central Subfield Retinal Thickness (CST) From Baseline by Visit Over Time for All RVO Participants.
Mean change in OCT central subfield retinal thickness (CST) from baseline by visit over time (up to Week 48) for all RVO participants.
Measured: Day 1 - Week 48
Mean Change in OCT Center Point Retinal Thickness (CPT) From Baseline by Visit Over Time for All RVO Participants.
Mean change in OCT center point retinal thickness (CPT) from baseline by visit over time (up to Week 48) for all RVO participants.
Measured: Day 1 - Week 48
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Oct 2020
- Study start25 Sep 2020
- Primary completion10 Jun 2022
- Study completion19 Jan 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Macular EdemaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants will be randomized 1:1 into one of two treatment arms: KSI-301 or aflibercept. Participants in the Extension Phase will be treated with KSI-301.
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Outcomes assessor
- Enrolment
- 568 participants (actual)
Sponsor and investigators
- Lead sponsor
- Kodiak Sciences Inc
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Pablo Velazquez-Martin, MD, Study director, Kodiak Sciences Inc
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04592419
- Sponsor's protocol ID
- KS301P103
- Other IDs
- 2020-001061-37
- Acronym
- BEACON
- Status last verified
- Jun 2024
- First submitted
- 12 Oct 2020
- Last updated
- 26 Jun 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Temkar S, Rajasekar G, Shah AD, Shaikh N, Deb AK, Basa K. Retinal vein occlusion-related macular edema: An updated review of current evidence and future directions. Indian J Ophthalmol. 2026 May 1;74(5):715-723. doi: 10.4103/IJO.IJO_3361_25. Epub 2026 Apr 29.
PubMed 42054088
Study at a glance
From the registry record, last updated by the sponsor on 26 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective, Randomized, Double-masked, Active Comparator-controlled, Multi-center, Two-arm, Phase 3 Study to Evaluate the Efficacy and Safety of Intravitreal KSI-301 Compared With Intravitreal Aflibercept in Participants With Visual Impairment Due to Treatment-naïve Macular Edema Secondary to Retinal Vein Occlusion (RVO)
- ClinicalTrials.gov ID
- NCT04592419
- Acronym / sponsor ID
- BEACON / KS301P103
- Conditions
- Macular Edema, Retinal Vein Occlusion
- Keywords
- RVO, Kodiak, KSI-301, Vascular endothelial growth factor, Anti-VEGF, VEGF, Antibody biopolymer conjugate, Retinal Degeneration
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 568 participants (actual)
- Lead sponsor
- Kodiak Sciences IncIndustry (pharma, biotech, devices)
- Study start
- 25 Sep 2020 (actual)
- Primary completion
- 10 Jun 2022 (actual)
- Study completion
- 19 Jan 2023 (actual)
- First posted
- 19 Oct 2020 (actual)
- Results
- Posted 6 Jun 2024
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This Phase 3 study will evaluate the efficacy, durability, and safety of KSI-301 compared to aflibercept, in participants with macular edema due to treatment-naïve branch (BRVO) or central retinal vein occlusion (CRVO).
Detailed description
This is a Phase 3, prospective, randomized, double-masked, two-arm, multi-center non-inferiority study evaluating the efficacy and safety of repeated intravitreal dosing of KSI-301 5 mg in participants with visual impairment due to treatment-naïve macular edema secondary to RVO (either branch or central type).
The primary endpoint will be assessed at Week 24; additional secondary endpoints for efficacy will be assessed at Week 24 and Week 48.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, outcomes assessor)
- Number of arms
- 2
- Model description
- Participants will be randomized 1:1 into one of two treatment arms: KSI-301 or aflibercept. Participants in the Extension Phase will be treated with KSI-301.
| Arm | Type | Receives |
|---|---|---|
| KSI-301 (Arm A) | Experimental | Drug: KSI-301, Other: Sham ProcedureIntravitreal injection of KSI-301 (5 mg) at Day 1, Week 4, and once every 8 weeks through Week 20 followed by an individualized dosing regimen of Intravitreal injection of KSI-301 (5 mg) from Week 24 to Week 44. In the Extension Phase, participants randomized to KSI-301 (5 mg) in the Primary Study will continue to receive KSI-301 (5 mg) based on protocol-defined disease activity criteria. |
| Aflibercept (Arm B) | Active comparator | Drug: Aflibercept, Other: Sham ProcedureIntravitreal injection of aflibercept (2 mg) once every 4 through Week 20 followed by an individualized dosing regimen of Intravitreal injection of Aflibercept (2 mg) once every 4 weeks from Week 24 to Week 44. In the Extension Phase, participants randomized to aflibercept in the Primary Study will cross over to treatment with KSI-301 (5 mg). They will receive their first dose of KSI-301 (5 mg) at Week 48 and will receive additional treatment with KSI-301 (5 mg) based on protocol-defined disease activity criteria. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Signed informed consent prior to participation in the study.
- Treatment-naïve macular edema of 6 months duration or less due to CRVO or BRVO. Participants with hemiretinal vein occlusion will be included as CRVO.
- BCVA ETDRS letter score between 80 and 25 (20/25 to 20/320 Snellen equivalent), inclusive in the Study Eye.
- CST of ≥ 320 microns on SD-OCT (Heidelberg Spectralis or equivalent on other OCT instruments) as determined by the Reading Center
- Decrease in vision determined by the Investigator to be primarily the result of ME secondary to RVO.
Key exclusion criteria (12 listed)
- Macular edema in the Study Eye for reasons other than RVO
- Active iris or angle neovascularization, neovascular glaucoma, neovascularization of the optic disc, retinal neovascularization or vitreous hemorrhage in the Study Eye.
- Uncontrolled glaucoma in the Study Eye.
- Active retinal disease other than the condition under investigation in the Study Eye.
- Any history or evidence of a concurrent ocular condition present, that in the opinion of the Investigator could require either medical or surgical intervention alter visual acuity during the study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| KSI-301Intravitreal Injection | Drug | KSI-301 (Arm A) |
| AfliberceptAlso: EyleaIntravitreal Injection | Drug | Aflibercept (Arm B) |
| Sham ProcedureThe sham is a procedure that mimics an intravitreal injection. It involves pressing the blunt end of an empty syringe (without a needle) against the anesthetized eye. It will be administered to participants in both treatments arms at applicable visits to maintain masking. | Other | Aflibercept (Arm B), KSI-301 (Arm A) |
Primary outcome
Mean Change in Best Corrected Visual Acuity (BCVA) From Day 1 to Week 24 in BRVO Participants.
Time frame: Day 1 to Week 24
BCVA as a continuous variable measured at each study visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA approach.
Mean Change in Best Corrected Visual Acuity (BCVA) From Day 1 to Week 24 in All RVO Patients.
Time frame: Day 1 to Week 24
BCVA as a continuous variable measured at each study visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA approach.
8 secondary outcomes
Mean Change From Baseline in BCVA (ETDRS Letters) by Visit Over Time up to Week 48 for All RVO Participants.
Time frame: Day 1 - Week 48
Percentage of Participants Who Gain ≥ 5, ≥10 and ≥15 Letters From Baseline Over Time up to Week 48 for All RVO Participants.
Time frame: Day 1 - Week 48
Percentage of Participants Who Lose ≥ 5, ≥10 and ≥15 ETDRS Letters From Baseline Over Time up to Week 48 for All RVO Participants
Time frame: Day 1 - Week 48
Percentage of Participants With BCVA Snellen Equivalent of 20/40 or Better Over Time (≥69 ETDRS Letters) for All RVO Participants.
Time frame: Day 1 - Week 48.
Percentage of Participants With BCVA Snellen Equivalent of 20/200 or Worse (≤ 38 ETDRS Letters) Over Time for All RVO Participants.
Time frame: Baseline - Week 48
Percentage of Participants With Absence of Macular Edema (Defined as OCT CST < 325 Microns) Over Time for All RVO Participants.
Time frame: Baseline - Week 48
Mean Change in OCT Central Subfield Retinal Thickness (CST) From Baseline by Visit Over Time for All RVO Participants.
Time frame: Day 1 - Week 48
Mean Change in OCT Center Point Retinal Thickness (CPT) From Baseline by Visit Over Time for All RVO Participants.
Time frame: Day 1 - Week 48
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Jun 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 42054088Temkar S, Rajasekar G, Shah AD, Shaikh N, Deb AK, Basa K. Retinal vein occlusion-related macular edema: An updated review of current evidence and future directions. Indian J Ophthalmol. 2026 May 1;74(5):715-723. doi: 10.4103/IJO.IJO_3361_25. Epub 2026 Apr 29.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pablo Velazquez-Martin, MD study director
Kodiak Sciences Inc
141 sites in 12 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing KSI-301 and Aflibercept in people with Macular Edema and Retinal Vein Occlusion, run by Kodiak Sciences Inc at 141 sites in 12 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 141 sites in United States, Spain, Israel, France, Poland and 7 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 6 Jun 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean Change in Best Corrected Visual Acuity (BCVA) From Day 1 to Week 24 in BRVO Participants. (time frame: Day 1 to Week 24). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04592419, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jun 2024.