Assessment of Proactive Treatments in Patients With Wet Age-related Macular Degeneration (wAMD) Which Have Never Undergone Treatment of This Particular Disease
XTEND
Evaluation of an eXtended and proacTive Dosing regimEn in Treatment-Naïve Patients With Wet Age-related Macular Degeneration (wAMD)
1 other identifier
observational
1,563
17 countries
17
Brief Summary
In this observational study researchers want to learn more about changes in visual acuity (clarity of vision) with proactive flexible treatments over time in patients suffering from wet age-related macular degeneration (wAMD) after decision to treat with Aflibercept (Eylea) was made. Wet AMD is an eye disease that progressively destroys the macula, the central portion of the retina, impairing central vision.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started May 2019
Longer than P75 for all trials
17 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 4, 2019
CompletedFirst Posted
Study publicly available on registry
May 7, 2019
CompletedStudy Start
First participant enrolled
May 12, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 7, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
October 17, 2023
CompletedSeptember 20, 2024
September 1, 2024
4.2 years
May 4, 2019
September 18, 2024
Conditions
Outcome Measures
Primary Outcomes (1)
The change in BCVA (best corrected visual acuity)
In treatment-naïve wAMD patients treated with IVT aflibercept in a flexible proactive treatment pattern (fixed dosing or T\&E (Treat and Extend Regimen)) by label regimen.
Baseline to 12 months
Secondary Outcomes (7)
The change in BCVA
Baseline to 24 and 36 months
The change in BCVA by intended treatment regimen
Baseline to 12, 24 and 36 months
The proportion of patients (eyes) gaining or losing a visual acuity compared to baseline
Baseline at 12, 24 and 36 months
The proportion of patients (eyes) achieving a Snellen equivalent of 20/40 or better (approximately 73 ETDRS letters)
At 12, 24 and 36 months
The changes in central retinal thickness (CRT)
Baseline to 12, 24 and 36 months
- +2 more secondary outcomes
Study Arms (1)
wAMD patients
Patients with a diagnosis of wAMD and naïve to any treatment in the study eye will be enrolled after the decision by treating physician for IVT aflibercept therapy according to the local label.
Interventions
As prescribed by the treating physician according to the local label. No IVT aflibercept will be provided due to a nature of observational study.
Eligibility Criteria
Approximately 2.000 patients from sites in Asia-Pacific, Europe, Latin America and North America.
You may qualify if:
- A diagnosis of wAMD.
- Patients for whom the decision to initiate treatment with IVT aflibercept in a proactive regimen was made as routine clinical practice.
- Treatment-naïve in the study eye (no prior therapy for wAMD).
- Patient age ≥50 years of age.
- Written informed patient consent before the start of data collection (according to the requirements of the local authorities and laws).
You may not qualify if:
- Participation in an investigational program with interventions outside of routine clinical practice.
- Patients with contraindications to IVT aflibercept listed in the local marketing authorization.
- Planned treatment regimen outside of the local marketing authorization.
- Patients with eye diseases, e.g. advanced glaucoma or visually significant cataracts, likely to require surgery during the observation period in the study eye.
- Concomitant ocular or systemic administration of drugs up to 3 months before IVT aflibercept treatment that could interfere with or potentiate the mechanism of action of IVT aflibercept, including other anti-VEGF agents in the fellow eye.
- Any other retinal disease which may interfere with the treatment of wAMD.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Bayerlead
Study Sites (17)
Many Locations
Multiple Locations, Argentina
Many Locations
Multiple Locations, Australia
Many Locations
Multiple Locations, Belgium
Many Locations
Multiple Locations, Canada
Many Locations
Multiple Locations, China
Many Locations
Multiple Locations, Colombia
Many Locations
Multiple Locations, Denmark
Many Locations
Multiple Locations, France
Many Locations
Multiple Locations, Ireland
Many Locations
Multiple Locations, Italy
Many Locations
Multiple Locations, Norway
Many Locations
Multiple Locations, South Korea
Many Locations
Multiple Locations, Spain
Many Locations
Multiple Locations, Sweden
Many Locations
Multiple Locations, Switzerland
Many Locations
Multiple Locations, Thailand
Many Locations
Multiple Locations, United Kingdom
Related Publications (2)
Bailey C, Chandran M, Gale R, Narendran N, Talks J, McGoey H, Keshk Z, Morgan-Warren P, Allmeier H, Machewitz T, Patel PJ, Varma D. 2-year results from an observational study of proactive treatment regimens with intravitreal aflibercept 2 mg in patients with nAMD in clinical practice: XTEND study UK cohort. Eye (Lond). 2025 Apr;39(6):1138-1145. doi: 10.1038/s41433-024-03550-y. Epub 2024 Dec 24.
PMID: 39719502DERIVEDKorobelnik JF, Chaudhary V, Mitchell P, Kang SW, Tadayoni R, Allmeier H, Lee J, Zhang X, Machewitz T, Bailey C. XTEND: Two-Year Results from a Global Observational Study Investigating Proactive Dosing of Intravitreal Aflibercept in Neovascular Age-Related Macular Degeneration. Ophthalmol Ther. 2024 Mar;13(3):725-738. doi: 10.1007/s40123-023-00867-x. Epub 2024 Jan 10.
PMID: 38198053DERIVED
Related Links
MeSH Terms
Interventions
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 4, 2019
First Posted
May 7, 2019
Study Start
May 12, 2019
Primary Completion
July 7, 2023
Study Completion
October 17, 2023
Last Updated
September 20, 2024
Record last verified: 2024-09
Data Sharing
- IPD Sharing
- Will not share
Availability of this study's data will later be determined according to Bayer's commitment to the EFPIA/PhRMA "Principles for responsible clinical trial data sharing". This pertains to scope, timepoint and process of data access. As such, Bayer commits to sharing upon request from qualified researchers patient-level clinical trial data, study-level clinical trial data, and protocols from clinical trials in patients for medicines and indications approved in the US and EU as necessary for conducting legitimate research. This applies to data on new medicines and indications that have been approved by the EU and US regulatory agencies on or after January 01, 2014. Interested researchers can use www.clinicalstudydatarequest.com to request access to anonymized patient-level data and supporting documents from clinical studies to conduct research. Information on the Bayer criteria for listing studies and other relevant information is provided in the Study sponsors section of the portal.