- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04968756
Evaluating the Safety of the SPECTRALIS CENTAURUS Device (CENTAURUS)
Open Label Early Feasibility Study Evaluating the Safety of the SPECTRALIS CENTAURUS Device for Dosimetry of Selective Retina Therapy With Optical Coherence Tomography
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Optical microsurgery of the retinal pigment epithelium (RPE) requires reliable real-time dosimetry to prevent unwanted overexposure of the neuroretina. The SPECTRALIS CENTAURUS device implements optical coherence tomography (OCT) to detect intentional elimination of RPE cells caused by a prototype laser for selective retina therapy (SRT).
Within this clinical trial the safety of the SPECTRALIS CENTAURUS device and its ability to detect RPE cell damage towards selective real-time laser microsurgery will be evaluated.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Chantal Dysli, MD PhD
- Phone Number: +41 (0)31 632 25 01
- Email: chantal.dysli@insel.ch
Study Contact Backup
- Name: Martin Zinkernagel, MD PhD
- Phone Number: +41 (0)31 632 85 03
- Email: martin.zinkernagel@insel.ch
Study Locations
-
-
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Bern, Switzerland, 3010
- Recruiting
- University Hospital Inselspital
-
Contact:
- Chantal Dysli, PhD Dr. med.
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Written Informed Consent
- For Stage 1, any patient aged >18 years with the need for conventional laser retina ablation
- For Stage 2, will be restricted to people aged 50 to <95 years with lesion characteristics that meet the criteria for intermediate AMD
Exclusion Criteria:
- Presence of reticular pseudodrusen
- Any manifestation of late-stage AMD
- Known hypersensitivity or allergy to fluorescein or uncontrolled hypertension
- Concomitant systemic corticosteroid treatment for continuous period longer than 2 weeks
- History of any vitreous haemorrhage within 4 weeks prior to screening or current haemorrhage in the study eye
- Inability to obtain fundus photographs or fluorescein angiogram of sufficient quality
- Photosensitive epilepsy
- Insufficient retinal pigmentation (albinism)
- Corneal opacity / lens opacity
- Women of child-bearing potential
- Contralateral eye is at an advanced stage of disease and has poor visual acuity
- Inability to follow the procedures of the study
- Participation in another study with investigational drug within the 30 days preceding and during the present study - Inability or lack of willingness to commit to return for all clinical visits and complete all study-related procedures
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Treatment with the SPECTRALIS CENTAURUS device
In Stage 1, two laser pattern will be applied in areas of the retina that require ablative laser photocoagulation. In Stage 2, a laser pattern will be applied along and on the outside of the arcades. Furthermore, a treatment pattern will be applied to an area temporal to the fovea affected by intermediary age-related macular degeneration (AMD) and confluent soft drusen. |
Microsecond laser microsurgery by using the SPECTRALIS CENTAURUS device
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety SPECTRALIS CENTAURUS - AEs
Time Frame: 26 weeks
|
The primary objective of this study is to assess the safety of the SPECTRALIS CENTAURUS device in clinical use by the evaluation of any adverse events (AEs) that may be related to the study device or the study intervention, including device deficiencies (DDs) The following potential AEs are evaluated throughout the study regarding the laser treatment:
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26 weeks
|
Safety SPECTRALIS CENTAURUS - DDs
Time Frame: At treatment (baseline)
|
In addition to the AEs, the following potential device deficiencies (DDs) can be listed in relation to the treatment and the SPECTRALIS CENTAURUS device:
Beside the DDs mentioned above, additional sub-criteria are assessed by default in advance to the treatment visit according to an acceptance test protocol (ATP). The ATP establishes the acceptance test framework for the SPECTRALIS CENTAURUS and describes the scope of the work performed and the approach taken to validate that the system performs as required. An acceptance test is carried out on each day on which a patient is to be treated. |
At treatment (baseline)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Evaluation of OCT for SRT dosimetry
Time Frame: At treatment (baseline)
|
During treatment, OCT M-scans are recorded collinear to the treatment laser application.
Post-treatment, all lesions are examined by fluorescein angiography (FA) for RPE cell damage.
In addition, the OCT-M scan data is examined for fringe washouts (signal washouts) that occur with RPE cell damage.
An analysis of these data (RPE cell damage vs. OCT fringe washouts) will reveal whether OCT is suitable for real-time dosimetry of SRT.
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At treatment (baseline)
|
Progression of AMD after laser treatment according to best-corrected visual acuity (BCVA)
Time Frame: At treatment (baseline) and after 1, 4, 12 and 26 weeks
|
Course of disease monitoring on AMD and confluent soft drusen with BCVA: Visual acuity is assessed using the Early Treatment Diabetic Retinopathy Study (ETDRS) chart (consisting of rows of letters) / LogMAR chart (Logarithm of the Minimum Angle of Resolution), after appropriate refraction.
Visual acuity represents the basic and most clinically relevant functional test to evaluate of central visual acuity.
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At treatment (baseline) and after 1, 4, 12 and 26 weeks
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Progression of AMD after laser treatment according to OCT imaging
Time Frame: At treatment (baseline) and after 1, 4, 12 and 26 weeks
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Course of disease monitoring on intermediary AMD and confluent soft drusen with OCT: OCT provides non-invasive morphological assessment of the retinal layers including the RPE and the choroid.
It is a commonly used objective method during clinical assessment.
OCT allows to identify structural changes such as Bruch's membrane ruptures, choroidal neovascularizations (CNV) with exudative macular edema, photoreceptor damage and drusen evolution.
A macular volume OCT scan centered at the fovea will be acquired routinely.
Additionally, volume OCT scans across the laser area will be acquired.
This allows, for example, that a change in retinal thickness (μm) can be observed in the short term as well as in the long term.
No single endpoint is given for this examination.
However, experience shows that CNV would be the most likely case which can be expected with this laser treatment.
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At treatment (baseline) and after 1, 4, 12 and 26 weeks
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Progression of AMD after laser treatment according to FA imaging
Time Frame: At treatment (baseline) and after 12 weeks
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Course of disease monitoring on intermediary AMD and confluent soft drusen with FA: Fluorescein is injected intravenously before serial fundus image are taken after excitation of the fluorescein dye.
No single endpoint is given for this examination.
However, experience shows that CNV and subtle laser scars would be the most likely cases which can be expected with this laser treatment.
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At treatment (baseline) and after 12 weeks
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Progression of AMD after laser treatment according to color fundus photography (CFP)
Time Frame: At treatment (baseline) and after 1, 4, 12 and 26 weeks
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Course of disease monitoring on intermediary AMD and confluent soft drusen with CFP: CFP will be used to document and monitor pigmentary changes of the fundus and potential formation of scars after laser application.
Since it is difficult to quantify fundus image changes, the principal investigator as well as a safety committee will evaluate fundus changes on an individual basis, taking into account the location and laser parameters used in the participant.
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At treatment (baseline) and after 1, 4, 12 and 26 weeks
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Chantal Dysli, MD PhD, University of Bern
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CENTAURUS
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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