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OTX-TKI

Phase 3

Neovascular Age-related Macular Degeneration | Small molecule | Ophthalmology |Ocular Therapeutix, Inc.|Trials Updated: Jul 1, 2026

OTX-TKI development status

Highest phase Phase 3
Registered trials 4 across 1 sponsor since Aug 2018

OTX-TKI target and mechanism

Molecular targetVEGFR
ModalitySmall molecule

Also known as OTX-TKI (axitinib implant)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials6
Total Enrollment2,999

FDA Designations

No designations recorded

OTX-TKI clinical trials

OTX-TKI · 6 trials · 3 indications

Phase 3 4Phase 1 2
NCT07516132Study to Evaluate Long-Term Safety of Intravitreal OTX-TKI (Axitinib Implant) in Participants With Neovascular Age-Related Macular Degeneration Who Successfully Completed 2-Year OTX-TKI-2023-AMD-301 or OTX-TKI-2023-AMD-303 StudyNeovascular Age-Related Macular Degeneration (nAMD)
RECRUITING850 Analytics
NCT07235085A Study to Evaluate the Efficacy and Safety of OTX-TKI (Axitinib Implant) in Participants With Non-Proliferative Diabetic RetinopathyNon-Proliferative Diabetic Retinopathy
RECRUITING930 Analytics
NCT06495918Study to Evaluate the Efficacy and Safety of Intravitreal OTX-TKI (Axitinib Implant) in Subjects With Neovascular Age- Related Macular DegenerationNeovascular Age-related Macular Degeneration
ACTIVE NOT_RECRUITING825 Analytics
NCT06223958Study to Evaluate the Efficacy and Safety of Intravitreal OTX-TKI (Ocular Therapeutix) (Axitinib Implant) in Subjects With Neovascular Age-Related Macular DegenerationNeovascular Age-Related Macular Degeneration
ACTIVE NOT_RECRUITING344 Analytics
PHASE3RECRUITING
Study to Evaluate Long-Term Safety of Intravitreal OTX-TKI (Axitinib Implant) in Participants With Neovascular Age-Related Macular Degeneration Who Successfully Completed 2-Year OTX-TKI-2023-AMD-301 or OTX-TKI-2023-AMD-303 Study
Neovascular Age-Related Macular Degeneration (nAMD)Unlock trial analytics
PHASE3RECRUITING
A Study to Evaluate the Efficacy and Safety of OTX-TKI (Axitinib Implant) in Participants With Non-Proliferative Diabetic Retinopathy
Non-Proliferative Diabetic RetinopathyUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Study to Evaluate the Efficacy and Safety of Intravitreal OTX-TKI (Axitinib Implant) in Subjects With Neovascular Age- Related Macular Degeneration
Neovascular Age-related Macular DegenerationUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Study to Evaluate the Efficacy and Safety of Intravitreal OTX-TKI (Ocular Therapeutix) (Axitinib Implant) in Subjects With Neovascular Age-Related Macular Degeneration
Neovascular Age-Related Macular DegenerationUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence and severity of treatment-emergent adverse events (TEAEs) from Baseline (Day 1) through Week 144
from Baseline (Day 1) through Week 144

Number of events

Proportion of participants with severe vision loss (defined as ≥ 30 Early Treatment Diabetic Retinopathy Study [ETDRS] letters loss) from Baseline (Day 1) through Week 144
from Baseline (Day 1) through Week 144

Percentage

DRSS 2-step change status at Week 52 from baseline in the study eye (≥ 2 step improvement, ≥ 2-step worsening, < 2-step change in either direction)
52 weeks

The Diabetic Retinopathy Severity Scale (DRSS) measures the severity of the diabetic retinopathy in patients by grading retinal images obtained by color fundus photography. Severity is determined by the presence of specific signs.

Best Corrected Visual Acuity (BCVA)
Week 48

Mean change in Best Corrected Visual Acuity (BCVA) from baseline at Week 48

Safety and Tolerability
Through study completion, an average of 1 year

Incidence and severity of treatment emergent adverse events

Incidence of treatment emergent adverse events for each subject
9 months

All adverse events from screening through end of study will be captured

Secondary Endpoints

BCVA changes
Through study completion, an average of 1 year
Central subfield thickness changes
Through study completion, an average of 1 year
Rescue Therapy
Through study completion, an average of 1 year
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
OTX-TKIEXPERIMENTAL -
OTX-TKI Q52W (single dose)EXPERIMENTALOTX-TKI 0.45 mg via intravitreal (IVT) administration at Day 1 and sham procedure at Week 24
OTX-TKI Q24W (2 doses)EXPERIMENTALOTX-TKI 0.45 mg via IVT administration at Day 1 and Week 24
Sham Q24W (control)SHAM_COMPARATORSham procedure at Day 1 and Week 24
OTX-TKI Re-doseEXPERIMENTAL -
Aflibercept 2mg on labelACTIVE_COMPARATOR -
Aflibercept 8mg high doseOTHER -
OTX-TKI (axitinib implant)EXPERIMENTAL -
ControlOTHER -
AfliberceptACTIVE_COMPARATOR -
Cohort 1 (Low Dose)EXPERIMENTALSubjects will receive a low dose of OTX-TKI
Cohort 2 (Middle Dose)EXPERIMENTALSubjects will receive a middle dose of OTX-TKI.
Cohort 3 (High Dose)EXPERIMENTALSubjects will receive a high dose of OTX-TKI.
Cohort 3 (Anti-VEGF)EXPERIMENTALSubjects will receive OTX-TKI plus a single anti-VEGF injection
Cohort 4 (High Dose)EXPERIMENTALSubjects will receive a high dose of OTX-TKI.
Cohort 4 (Anti-VEGF)EXPERIMENTALSubjects will receive OTX-TKI plus a single anti-VEGF injection

Interventions

NameTypeDescription
OTX-TKIDRUGIntravitreal Injection of OTX-TKI
Single intravitreal injection of axitinib hydrogel implant followed by a mock (sham) injection procedure at Week 24DRUGOTX-TKI 0.45 mg is a dried polyethylene glycol (PEG)-based hydrogel containing dispersed drug particles of the small molecule axitinib, a tyrosine kinase inhibitor (TKI).
Intravitreal injection of axitinib hydrogel implant followed by a second intravitreal injection of the axitinib implant at Week 24DRUGOTX-TKI 0.45 mg is a dried polyethylene glycol (PEG)-based hydrogel containing dispersed drug particles of the small molecule axitinib, a tyrosine kinase inhibitor (TKI).
Sham/mock procedure of intravitreal injection followed by a second sham/mock procedure at Week 24OTHERsham/mock intravitreal injection procedure
AfliberceptDRUGIntravitreal Injection of 2mg of aflibercept
OTX-TKI (axitinib implant)DRUGIntravitreal Injection of OTX-TKI (axitinib implant)
OTX-TKI/ShamDRUGOTX-TKI is one dose so subsequent visits will be sham to maintain the mask
Aflibercept/ShamDRUGAflibercept administered every 8 weeks
Anti-VEGFDRUGStandard of care therapy used to block vascular endothelial growth factor
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Eligibility Criteria

Age Range50 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Participants with a diagnosis of nAMD in the study eye who successfully completed Study OTX-TKI-2023-AMD-301 through Week 104 or Study OTX-TKI-2023-AMD-303 through Week 96 * Have adequate ocular media and adequate pupillary dilation in the study eye to permit good quality fund...

Countries:United StatesArgentinaAustraliaPuerto Rico
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Frequently asked questions about OTX-TKI

What is OTX-TKI used for?

OTX-TKI is an investigational treatment being studied for two eye conditions: neovascular age-related macular degeneration (nAMD) and non-proliferative diabetic retinopathy. It is designed as an intravitreal hydrogel implant that delivers the small molecule axitinib. It is not yet approved for any indication and remains in Phase 3 clinical development.

What does OTX-TKI target?

OTX-TKI targets VEGFR, the vascular endothelial growth factor receptor. By inhibiting VEGFR, the axitinib payload aims to reduce abnormal blood vessel growth and leakage in the retina. This mechanism is relevant to both neovascular age-related macular degeneration and non-proliferative diabetic retinopathy, the two indications under study.

Who is developing OTX-TKI?

OTX-TKI is being developed by Ocular Therapeutix, Inc., which trades on the Nasdaq under the ticker OCUL. The company is responsible for the clinical program, including the Phase 3 trials in neovascular age-related macular degeneration and non-proliferative diabetic retinopathy.

What phase is OTX-TKI in?

OTX-TKI is in Phase 3 clinical development. It is investigational and has not been approved by the FDA for any indication. The Phase 3 program includes multiple trials, with three currently active and two completed, reflecting ongoing evaluation of efficacy and safety in the target patient populations.

What clinical trials is OTX-TKI in?

OTX-TKI is being studied in several Phase 3 trials. These include NCT07516132, a long-term safety study in nAMD; NCT07235085, a trial in non-proliferative diabetic retinopathy; NCT06495918, a Phase 3 study in nAMD; and NCT06223958, another Phase 3 trial in nAMD. All are randomized, double-blind, and active-controlled.

Is OTX-TKI the same as axitinib implant?

Yes, OTX-TKI is also referred to as the axitinib implant or axitinib hydrogel implant. These names describe the same investigational product: a hydrogel implant that delivers axitinib via intravitreal injection. The various trial descriptions may use slightly different phrasing, but they all refer to the same OTX-TKI development program.