All terms
Clinical & TrialsClinical Evidence
Master Protocol (Basket / Umbrella / Platform)
A single protocol that evaluates multiple interventions, populations, or sub-studies under a unified statistical and operational framework.
Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 9, 2026
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. What the regulation says
FDA Guidance: 'Master Protocols: Efficient Clinical Trial Design Strategies to Expedite Development of Oncology Drugs and Biologics' (March 2022). NIH and the FDA-NIH Joint Leadership Council have published companion playbooks.
What this means in practice
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.
Primary references
3 sourcesLink health: 2 verified 1 bot-blocked· last checked 2026-05-09
FDA·2NIH·1
- 1
FDA — Master Protocols Guidance (2022)Bot-blockedFDAfda.gov
- 2
NIH NCATS — Master ProtocolsVerifiedNIHncbi.nlm.nih.gov
- 3
FDA - Clinical Trials and Human Subject ProtectionVerifiedFDAfda.gov
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