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Clinical & Trials

Master Protocol (Basket / Umbrella / Platform)

In one line

A single protocol that evaluates multiple interventions, populations, or sub-studies under a unified statistical and operational framework.

Definition

A master protocol is a single overarching trial protocol that simultaneously evaluates multiple interventions or populations: basket trials test one therapy across multiple diseases sharing a common biomarker; umbrella trials test multiple therapies in a single disease stratified by biomarker; platform trials evaluate multiple therapies against a common control with sub-studies that can drop or add over time. The architecture reduces administrative overhead, shares control arms, and accelerates evidence generation.

Why it matters

Master protocols originated in oncology and have spread to neurology, infectious disease, and increasingly device evidence generation (companion diagnostic studies, multi-arm imaging AI evaluations).

Common pitfalls

•Underestimating the operational complexity — master protocols simplify design and complicate execution.
•Failing to define add/drop rules and DSMB authority precisely up front.

Sources

FDA — Master Protocols Guidance (2022) · FDA
NIH NCATS — Master Protocols · NIH
FDA - Clinical Trials and Human Subject Protection · FDA

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MedTech terminology is full of pairs that look interchangeable but carry very different regulatory, clinical, and commercial consequences. Picking the wrong framework, pathway, or standard early in a project can add months to a submission, invalidate clinical evidence, or trigger an audit finding. Side-by-side comparison is the fastest way to surface those differences before they become costly mistakes.

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Common comparison patterns

Regulatory pathway choice - 510(k) vs PMA, 510(k) vs De Novo, Abbreviated vs Special 510(k).
Quality systems - QSR vs ISO 13485, QMSR vs QSR.
Software classification - SaMD vs SiMD, Locked vs adaptive AI.
EU frameworks - MDR vs IVDR, CE Mark vs UKCA.
Cybersecurity artifacts - SPDX vs CycloneDX SBOM, CVE vs CVSS.
Post-market actions - Recall vs field action, Removal vs correction.

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MedTech Terms is a vendor-neutral community resource sponsored by Blue Goat Cyber. Definitions are written for educational use and are not legal or regulatory advice.