Exploratory Study to Investigate the Bioactivity, Ocular and Systemic Safety, Tolerability, and Pharmacokinetics Following Single and Multiple Intravitreal Administrations of KSI-301 in Subjects With wAMD, DME and RVO

Phase 1

Terminated

• Conditions: Diabetic Macular Edema; Wet Age-related Macular Degeneration; Retinal Vein Occlusion
• Interventions: Drug: KSI-301

• Registration Number: NCT03790852
• Lead Sponsor: Kodiak Sciences Inc

Brief Summary

This is a Phase 1b open-label study to assess the bioactivity, ocular and systemic safety, tolerability, and pharmacokinetics of repeated injections of KSI-301 at two dose levels: 2.5 mg and 5 mg

Detailed Description

Not available

Study Timeline

• Study Start: 2018-12-26
• Study First Submitted: 2018-12-27
• Study First Submitted QC: 2018-12-31
• Study First Posted: 2019-01-02
• Primary Completion: 2021-06-02
• Study Completion: 2022-06-09
• Status Verified: 2022-11
• Last Update Submitted: 2024-03-18
• Last Update Posted: 2024-03-20

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 121

Inclusion Criteria

Wet AMD Cohort

1. Treatment naïve wet age-related macular degeneration involving the fovea.
2. A lesion area <30 mm2 (12 disc areas) of any lesion type.
3. BCVA ETDRS letter score ≤ 78 and ≥ 23 (-20/25 to -20/320 Snellen equivalent) in the study eye.
4. Decrease in vision in the study eye determined by the investigator to be primarily the result of wAMD.

DME Cohort

1. Treatment naïve diabetic macular edema.
2. BCVA ETDRS letter score ≤ 78 and ≥ 23 (-20/25 to -20/320 Snellen equivalent) in the study eye.
3. Central subfield thickness (CST) of ≥ 300 microns on SD-OCT (Heidelberg Spectralis or equivalent).
4. Decrease in vision in the study eye determined by the investigator to be primarily the result of DME.

RVO Cohort

1. Treatment naïve retinal vein occlusion with macular edema and secondary visual impairment.
2. BCVA ETDRS letter score ≤ 78 and ≥ 23 (-20/25 to -20/320 Snellen equivalent) in the study eye.
3. Central subfield thickness (CST) of ≥ 300 microns on SD-OCT (Heidelberg Spectralis or equivalent).
4. Branch retinal vein occlusion (BRVO) and central retinal vein occlusion (CRVO) are both eligible.
5. Decrease in vision in the study eye determined by the investigator to be primarily the result of macular edema secondary to RVO.

General Inclusion Criteria

• Adults ≥ 21 years.

Exclusion Criteria

Wet AMD Cohort:

1. Choroidal neovascularization due to causes other than age-related macular degeneration in the study eye.
2. Geographic atrophy and/or subretinal fibrosis involving the fovea of the study eye.
3. Prior intravitreal anti-VEGF therapy in the study eye.

DME Cohort:

1. Initial diagnosis of DME of more than 6 months from screening in the study eye.
2. Hard exudates in the fovea.
3. Prior intravitreal anti-VEGF therapy or steroid injection, or steroid implant (dexamethasone or triamcinolone) in the study eye.
4. Moderate or dense vitreous hemorrhage preventing clear. visualization of the macula or optic disc in the study eye.
5. Fibrovascular proliferation or tractional retinal detachment in the posterior pole in the study eye. If traction is present outside the posterior pole, it should be considered not at risk of increasing and threatening the macula with the use of anti-VEGF injections, in the investigator's judgement.

RVO Cohort:

1. Initial diagnosis of RVO of more than 4 months from screening in the study eye.
2. Active retinal or iris neovascularization in the study eye.
3. Prior intravitreal anti-VEGF therapy or steroid injection, or steroid implant (dexamethasone or triamcinolone) in the study eye.

For all phase 1b subjects:

1. Uncontrolled glaucoma (defined as intraocular pressure ≥ 25 mmHg despite treatment with antiglaucoma medication) in the study eye.
2. History of retinal detachment or treatment or surgery for retinal detachment in the study eye.
3. Any history of uveitis in either eye.
4. Significant media opacities, including visually significant cataract, in the study eye that might interfere with visual acuity assessments, optical coherence tomography, fundus photography, or with examination of the eye for assessment of safety.
5. Prior vitrectomy surgery in the study eye.
6. Active retinal disease other than the conditions under investigation.
7. Active ocular or periocular infection or inflammation in either eye.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
KSI-301 2.5 mg	KSI-301	KSI-301 2.5 mg, 3 monthly initiating doses, with subsequent doses per protocol-specified retreatment criteria
KSI-301 5 mg	KSI-301	KSI-301 5 mg, 3 monthly initiating doses, with subsequent doses per protocol-specified retreatment criteria

Primary Outcome Measures

Name	Time	Method
Incidence of ocular (study eye) and systemic adverse events	Week 72

Trial Locations

Locations (11)

Retinal Research Institute, LLC; 🇺🇸 Phoenix, Arizona, United States

Byers Eye Institute at Stanford; 🇺🇸 Palo Alto, California, United States

Retina Vitreous Associates Medical Group; 🇺🇸 Beverly Hills, California, United States

Northern California Retina Vitreous Associates; 🇺🇸 Mountain View, California, United States

Austin Clinical Research; 🇺🇸 Austin, Texas, United States

Retina Vitreous Associates of Florida; 🇺🇸 Saint Petersburg, Florida, United States

Mid Atlantic Retina; 🇺🇸 Philadelphia, Pennsylvania, United States

Retina Research Institute of Texas; 🇺🇸 Abilene, Texas, United States

Sierra Eye Associates; 🇺🇸 Reno, Nevada, United States

Retina Consultants of Texas Woodlands; 🇺🇸 The Woodlands, Texas, United States

Retina Consultants of Texas; 🇺🇸 Bellaire, Texas, United States