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Bringing Trial Activities to Participants-The Trials@Home RADIAL Proof-of-Concept Trial Investigating
Mira G P Zuidgeest1, Megan Heath2, Bart Lagerwaard1
1Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands.
Decentralized clinical trials are being explored for feasibility. The RADIAL trial assesses fully decentralized and hybrid approaches versus site-based methods in Type 2 diabetes patients, evaluating key performance indicators for future implementation.
Area of Science:
- Clinical Trials Methodology
- Decentralized Clinical Trials
- Digital Health
Background:
- Interest in decentralized clinical trials (DCTs) is growing, but research on their feasibility and acceptability is limited.
- The Trials@Home RADIAL proof-of-concept (PoC) trial addresses this gap by evaluating decentralized approaches.
- Type 2 diabetes mellitus is a focus area for exploring novel trial designs.
Purpose of the Study:
- To assess the scientific and operational feasibility and quality of fully decentralized and hybrid clinical trial approaches.
- To compare decentralized trial models against a conventional, site-based approach.
- To provide insights for future PoC trials and support stakeholders in implementing decentralized elements.
Main Methods:
- A three-arm, parallel-group, open-label, multi-center, low-intervention Phase IV trial design.
- Comparison of three arms with identical clinical intervention (Insulin Glargine 300 U/mL) but varying decentralization levels.
- Inclusion of decentralized elements: online recruitment, remote consenting, remote visits, home-shipment of study materials, home-based sample collection, app-reported outcomes (ePROs), and home-device data collection.
Main Results:
- Key Performance Indicators (KPIs) for recruitment, retention, diversity, satisfaction (site and participant), cost, safety, adherence, and data quality are the primary outcomes.
- This paper focuses on the set-up, design, endpoint selection, and decentralized elements evaluated in the RADIAL trial.
- Lessons learned from the set-up, regulatory submission, and conduct of RADIAL will be shared across a series of publications.
Conclusions:
- The RADIAL trial provides a framework for evaluating the feasibility and quality of decentralized and hybrid clinical trial models.
- Insights gained will support the successful implementation of decentralized elements in future clinical trials.
- This study contributes to advancing the methodology of decentralized clinical trials for conditions like Type 2 diabetes.
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