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A Study to Evaluate Efficacy, Safety & Pharmacokinetics of the Port Delivery System (PDS) With Ranibizumab in Participants With Diabetic Macular Edema (DME) Compared With Intravitreal Ranibizumab; A Substudy to Evaluate the Safety of Re-implanting the PDS With Ranibizumab in Participants With DME
NCT04108156 · View on ClinicalTrials.gov ↗
Study Summary
This study will evaluate the efficacy, safety, and Pharmacokinetics (PK) of the PDS with ranibizumab in participants with DME when treated every 24 weeks (Q24W) compared with intravitreal (IVT) ranibizumab 0.5 milligrams (mg) every 4 weeks (Q4W). The substudy will evaluate safety of re-implanting the updated PDS with ranibizumab and the refill-exchange procedures following re-implantation in participants with DME who were previously enrolled in the main study, GR40550. Up to 100 participants from the main study will be enrolled and followed for a maximum of 72 weeks post-re-implantation in the substudy.
Conditions Studied
Interventions
- DRUG PDS Implant Pre-Filled with 100 mg/mL Ranibizumab
- DRUG Intravitreal Ranibizumab 0.5 mg Injection
- DRUG Ranibizumab refill exchange
Study Locations (20)
California
- California Retina Consultants — Bakersfield
- Retina-Vitreous Associates Medical Group — Beverly Hills
- The Retina Partners — Encino
- Retina Consultants of Orange County;Clinical Research — Fullerton
- Jules Stein Eye Institute/ UCLA — Los Angeles
- Northern California Retina-Vitreous Associates — Mountain View
- East Bay Retina Consultants — Oakland
- Doheny Eye Institute — Pasadena
- California Eye Specialists Medical Group — Pasadena
- Retina Consultants Medical Group — Sacramento
- Zuckerberg San Francisco General Hospital and Trauma Center — San Francisco
- Orange County Retina Medical Group — Santa Ana
- California Retina Consultants;Research Department — Santa Barbara
Arizona
- Barnet Dulaney Perkins Eye Center — Mesa
- Retinal Consultants of Arizona;Opthalmology — Phoenix
- Arizona Retina and Vitreous Consultants — Phoenix
- Associated Retina Consultants — Phoenix
Colorado
- Eye Center of Northern Colorado — Fort Collins
- Colorado Clinical Research — Lakewood
Connecticut
- Retina Group of New England — Waterford
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 634 participants |
| Start Date | 2019-09-30 |
| Est. Completion | 2027-11-16 |
| Phase | Phase 3 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT04108156
The ClinicalTrials.gov registry entry for NCT04108156 describes a study currently listed as recruiting. It is categorized as Phase 3, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 634 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Hoffmann-La Roche, which has 758 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Diabetic Macular Edema appearing as the primary indexed condition, and to 3 interventions — of which PDS Implant Pre-Filled with 100 mg/mL Ranibizumab is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT04108156 reports 20 study locations spanning 4 distinct geographic areas — top geographies include California, Arizona, Colorado. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT04108156 about?
NCT04108156 is a clinical study titled "A Study to Evaluate Efficacy, Safety & Pharmacokinetics of the Port Delivery System (PDS) With Ranibizumab in Participants With Diabetic Macular Edema (DME) Compared With Intravitreal Ranibizumab; A Substudy to Evaluate the Safety of Re-implanting the PDS With Ranibizumab in Participants With DME". This study will evaluate the efficacy, safety, and Pharmacokinetics (PK) of the PDS with ranibizumab in participants with DME when treated every 24 weeks (Q24W) compared with intravitreal (IVT) ranibizumab 0.5 milligrams (mg) every 4 weeks (Q4W). The substudy will evaluate safety of re-implanting t...
What is the current status of trial NCT04108156?
This trial is currently recruiting. It is a Phase 3 study. The enrollment target is 634 participants. The study started on 2019-09-30. Estimated completion is 2027-11-16.
What conditions does trial NCT04108156 study?
This clinical trial studies the following conditions: Diabetic Macular Edema. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT04108156?
The interventions under investigation include: PDS Implant Pre-Filled with 100 mg/mL Ranibizumab (DRUG), Intravitreal Ranibizumab 0.5 mg Injection (DRUG), Ranibizumab refill exchange (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT04108156?
This trial is sponsored by Hoffmann-La Roche, which has 758 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT04108156 being conducted?
This trial has 20 study locations across Arizona, California, Colorado, Connecticut. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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