Phase I Study to Assess the Safety and Efficacy of OCU200 for Center-Involved Diabetic Macular Edema (DME)
Study Details
Study Description
Brief Summary
A Phase 1 study to assess the safety and efficacy of OCU200 for center-involved diabetic macular edema
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Phase 1 |
Detailed Description
This is a multicenter, open-label, dose ranging study with 3 cohorts in the dose-escalation portion of the study and 1 cohort in the combination therapy portion of the study. An accelerated 3+3 design with parallel and sequential dosing will be used.
A total of 9 to 22 participants will be enrolled in the dose-escalation portion of the study to receive OCU200 alone (9 to 18 participants enrolled according to the 3+3 design and up to 4 participants replaced due to parallel cohort initiation). For the combination therapy cohort, a total of 3 to 6 participants will be enrolled to receive OCU200 (MTD) + Lucentis.
A total of up to 28 participants will be included in this study.
The following algorithm will be followed for dose-escalation:
Cohort 1 Low Dose (0.5 mg/mL): 3+3 participants will receive intravitreal injection of OCU200 low dose concentration.
1 of 3 results will occur from the first 3 Cohort 3 participants (first dose):
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If none of the first 3 participants on high dose concentration are determined by the DSMB to have a DLT, then the high dose concentration will be the determined MTD.
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If 2 or more of the first 3 participants on the high dose concentration are determined by the DSMB to have a DLT, then the medium dose concentration (1 mg/mL) will be the determined MTD. Any dosing on Cohort 4 will be paused and continuation will be re-assessed.
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If exactly 1 of the first 3 participants on high dose concentration is determined by the DSMB to have a DLT, then 3 additional participants will be enrolled on high dose concentration. Any dosing on Cohort 4 will be paused and continuation will be reassessed.
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If none of the 3 additional participants are determined by the DSMB to have a DLT, then the high dose concentration will be the determined MTD.
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If 1 or more of the 3 additional participants are determined by the DSMB to have a DLT, then the medium dose concentration will be the determined MTD. Upon positive DSMB recommendation following dose 1, participants will subsequently receive a 2nd dose (6 weeks later) according to their assigned cohort. The DSMB will review 2 weeks of safety data post 2nd dosing. If a DLT occurs after the 2nd dose of any subject, the dosing interval or dose concentration will be re-assessed.
The following algorithm will be followed for combination therapy cohort:
Cohort 4 MTD + Lucentis: 3 + 3 additional participants will be enrolled to receive OCU200 (High Dose or MTD) + Lucentis (in a sequential manner on dosing dates).
The sentinel participant in Cohort 4 will only be dosed after DSMB review of safety data for the sentinel subject in Cohort 3 or the determination of OCU200 MTD.
If the sentinel participant does not have a DLT as determined by DSMB, two additional participants will be dosed. The DSMB will continue to review all available safety data two weeks post dosing of participants.
Cohort 2 Medium Dose (1 mg/mL): 3+3 participants will receive intravitreal injection of OCU200 medium dose concentration. Following the same algorithm as Cohort 1.
Cohort 3 High Dose (2 mg/mL): 3+3 participants will receive intravitreal injection of OCU200 high dose concentration. Following the same algorithm as Cohort 2.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: Cohort 1 (Low Dose) 3+3 participants will receive intravitreal injection of OCU200 low dose concentration. |
Drug: OCU200 Low Dose
Intravitreal Injection
Other Names:
|
| Experimental: Cohort 2 (Medium Dose) 3+3 participants will receive intravitreal injection of OCU200 medium dose concentration. |
Drug: OCU200 Medium Dose
Intravitreal Injection
Other Names:
|
| Experimental: Cohort 3 (High Dose) 3+3 participants will receive intravitreal injection of OCU200 high dose concentration. |
Drug: OCU200 High Dose
Intravitreal Injection
Other Names:
|
| Experimental: Cohort 4 (High Dose/MTD + Lucentis) 3 + 3 additional participants will be enrolled to receive OCU200 (High Dose or MTD) + Lucentis (in a sequential manner on dosing dates). |
Drug: OCU200 High Dose
Intravitreal Injection
Other Names:
|
Outcome Measures
Primary Outcome Measures
- Study Drug-related adverse events (SDAE) [20 weeks]
Counts, frequencies and percentages of SDAEs.
- treatment-emergent adverse events (TEAEs) [20 weeks]
Counts, frequencies and percentages TEAEs. TEAEs are defined as an event that was not present prior to administration of the dose of study drug and present after the dose, or if it represents the exacerbation of an event that was present prior to the dose.
- serious adverse events (SAEs) [20 weeks]
Counts, frequencies and percentages of SAEs including Resulted in Death, Life-threatening, Hospitalization, Disabling/incapacitating, Congenital anomaly or birth defect and Medically significant AEs ( AE that did not meet any of the above criteria but could have jeopardized the subject and might have required medical or surgical intervention to prevent one of the outcomes listed above).
Secondary Outcome Measures
- Best-corrected visual acuity (BCVA) [20 Weeks (Changes from baseline)]
Measured as the ETDRS letter score on the EVA tester or E-ETDRS charts.
- Intraocular pressure (IOP) [20 weeks(Changes from baseline)]
IOP measurement by applanation or rebound tonometry. Confirmation with Goldmann tonometer if IOP reading is outside the normal range (8-21mmHg).
- Slit-lamp biomicroscopy [20 Weeks(Changes from baseline)]
Changes in visual function.
- Indirect ophthalmoscopy [20 Weeks (Changes from baseline)]
If visual acuity is so poor that the participant is unable to count fingers or perceive hand motion, light perception will be tested with the indirect ophthalmoscope as the light source.
- Color fundus photography [20 Weeks(Changes from baseline)]
Color fundus photographs will be taken to evaluate retinal anatomy and grade diabetic retinopathy severity scale (DRSS).
- Spectral Domain Optical Coherence Tomography (SD-OCT) [20 Weeks(Changes from baseline)]
SD-OCT will be utilized to assess retinal thickness. OCT images and scans will be transmitted to a central reading center for independent analysis.
- Spectral Domain Optical Coherence Tomography Angiography (SD-OCTA) [20 weeks (Changes from baseline)]
SD-OCTA will be utilized to assess retinal vasculature and images will be transmitted to a central reader for independent analysis.
- Wide-field Fluorescein Angiography (wf-FA) [20 weeks (Changes from baseline)]
wf-FA will be conducted at screening and EOS visits to assess central and peripheral vasculature.
- Anti-OCU200 antibody formation [20 weeks]
Blood samples will be collected for the assessment.
- OCU200 Pharmacokinetics parameters [20 weeks]
Blood samples will be collected for the assessment.
Other Outcome Measures
- Improvement of diabetic retinopathy severity scale (DRSS) [20 weeks]
Proportion of participants with ≥ 2-step improvement of diabetic retinopathy severity scale (DRSS)
- Change from baseline in BCVA letters. [20 weeks]
Dose response as assessed by mean change from baseline in BCVA letters using ETDRS chart and mean number of injections by study visit
- Changes in CST. [20 weeks]
Changes from baseline in CST on SD-OCT exam
- Best Corrected Visual Acuity [20 Weeks]
Changes from baseline in BCVA measured by ETDRS chart
- Reduction of CST [20 Weeks]
The proportion of participants having a ≥ 10% reduction of CST at Week 13 and Week 19
- mean increase ≥ 5 BCVA letters [20 Weeks]
The proportion of participants having a mean increase ≥ 5 BCVA letters at Week 13 and Week 19
- Requirement of rescue intervention [20 weeks]
The proportion of participants who require rescue intervention
Eligibility Criteria
Criteria
Inclusion Criteria:
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Diagnosis of Type 1 or Type 2 Diabetes Mellitus 2. Decreased visual acuity attributable primarily to DME 3. Central-involved DME with central retinal subfield thickness (CST) values, as assessed with spectral-domain optical coherence tomography (SD-OCT) of:
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≥ 320 if male or ≥ 305 µm if female on Heidelberg Spectralis
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≥ 305 if male or ≥ 290 if female on Zeiss Cirrus
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BCVA ≤ 78 and ≥ 24 letters on ETDRS chart (approximately 20/32 to 20/320 Snellen equivalents, respectively) in the study eye.
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Sufficient ocular media clarity, pupillary dilation and participant cooperation to permit acquisition of good quality retinal imaging
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No history of prior anti-VEGF injection for treatment of DME or history of at least 2 consecutive anti-VEGF intravitreal injection (less than 7 weeks apart) for the treatment of DME with documented incomplete resolution of central subfield thickening within 1 year prior to the screening visit. The last injection should be within 3 months prior to the screening visit.
Exclusion Criteria:
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Presence of any condition that prevent clear visualization of retina (e.g., significant cataract, vitreous hemorrhage)
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Uncontrolled hypertension (systolic pressure above 180 mmHg or diastolic pressure above 110 mmHg)
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Uncontrolled glaucoma
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Concurrent disease in the study eye, other than central-involved DME, that could compromise BCVA, require medical or surgical intervention during the study period or could confound interpretation of the results
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Intravitreal or periocular steroid treatment within 3 months prior to the screening visit or fluocinolone acetonide implant (Iluvien®) within 36 months prior to screening visit or dexamethasone implant (Ozurdex®) within 6 months prior to the screening visit.
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Any ocular surgery within 3 months prior to the screening visit in the study eye (e.g., cataract surgery, corneal refractive surgery)
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Prior vitrectomy in the study eye
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Uncontrolled/poorly controlled diabetes, as defined by Glycated hemoglobin (HbA1c) ≥ 12%
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History of retinal detachment in the study eye
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History of any other retinal vascular disease in the study eye including conditions that affect macular perfusion (e.g., retinal artery occlusion, retinal vein occlusion, vasculitis)
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Focal or pan-retinal laser photocoagulation in the study eye within 3 months prior to the screening visit
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Presence of any inherited retinal disease (e.g., chorioretinal dystrophies, rod/cone dystrophies)Any proliferative diabetic retinopathy
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Ocugen
Investigators
- Study Director: Roshan George, MD, Ocugen
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- OCU200-101