TMF Reference Model

The TMF Reference Model is a harmonized, industry-developed taxonomy for organizing Trial Master File (TMF) content into a predictable three-tier hierarchy of Zones, Sections, and Artifacts (with a fourth, more granular Sub-Artifact tier), each artifact carrying a unique ID, a written purpose/definition, and expected trial-phase metadata. A TMF or eTMF is properly described as 'built on' or 'mapped to' the TMF Reference Model when its filing structure and document types trace back to this defined Zone/Section/Artifact scheme rather than an organization's own bespoke folder taxonomy -- it is a classification standard layered on top of the general TMF/eTMF concept, not a synonym for it.

ByCASRAI Editorial Board

· Last updated 18 Jul 2026

Worked examples

Is an instance

A signed clinical trial protocol and its amendments file under Zone 02 (Central Trial Documents) as a specific numbered artifact -- e.g. artifact 02.01, 'Protocol' -- regardless of which sponsor, CRO, or eTMF vendor platform is used, because that artifact number and its purpose/definition are defined by the Reference Model itself, not by the individual organization.

Is an instance

A monitoring visit report generated during trial conduct files under Zone 05 (Site Management) as a distinct artifact from the informed consent form template, which files under Zone 04 (IRB/IEC and Other Approvals) -- the model's Section/Artifact breakdown is what lets an auditor or eTMF completeness dashboard check 'do we have this specific artifact for this site' rather than searching an ad hoc folder tree.

Looks similar, but isn't

Not an instance

An organization that keeps a complete, ICH E6(R2)-compliant Trial Master File -- every essential document present, dated, and signed -- but files it in its own internally devised folder structure (e.g. 'Regulatory Docs', 'Site Files', 'Safety') that has never been mapped to the Reference Model's Zones and Artifacts satisfies the TMF/essential-documents requirement but is not an instance of 'using the TMF Reference Model' -- the two are independent axes: content completeness under ICH E6(R2) versus taxonomy conformance to the Reference Model.

The TMF Reference Model is the industry-standard taxonomy for organizing Trial Master File (TMF) content. Rather than each sponsor, CRO, or eTMF vendor inventing its own folder structure, the Reference Model defines a common hierarchy of Zones, Sections, and Artifacts — and, at the most granular level, Sub-Artifacts — so that a given document type has a predictable, numbered location no matter which organization or software platform holds it. It is a classification standard layered on top of the TMF concept, comparable to how eCTD is a specific standardized format for the general concept of a regulatory submission, not the submission requirement itself.

Origin and Maintenance

The TMF Reference Model originated as an initiative of the Drug Information Association (DIA), developed by a volunteer industry working group to address the same problem across every sponsor and CRO: essential documents required by ICH E6(R2) Section 8 existed, but no two organizations filed them the same way, making cross-organization audits and eTMF software interoperability harder than necessary. The model has since gone through several major releases — publicly tracked version numbers include v3.0, v3.1, v3.2, and v3.3/v3.3.1 — and is now published and maintained under CDISC, which absorbed stewardship of the model from DIA. [Specific release dates and the exact current version should be re-verified against CDISC’s published standard before being treated as load-bearing, as CDISC gates full documentation access behind a sign-in.]

The Zone / Section / Artifact Structure

The model organizes TMF content into a three-tiered hierarchy, from broadest to most specific:

Zones — the top-level groupings by trial function or phase. Secondary industry sources consistently describe 11 zones, including Trial Management, Central Trial Documents, Regulatory, IRB/IEC and Other Approvals, Site Management, Investigational Product (IP) and Trial Supplies, Safety Reporting, Central and Local Testing, Third Parties, Data Management, and Statistics.
Sections — sub-categories within each Zone grouping documents around a specific process (for example, within the Regulatory zone, a section for regulatory authority correspondence versus a section for approvals).
Artifacts — the specific document type, each carrying a unique artifact ID number, a written purpose/definition explaining what it covers, expected file type(s), and the trial milestone(s) at which it typically appears.
Sub-Artifacts — an even more granular breakdown used where a single artifact type still needs finer distinction (for example, different categories of correspondence within one artifact).

[The specific counts reported across secondary industry sources — on the order of dozens of sections and several hundred artifacts and sub-artifacts — vary by version and should be confirmed against the current CDISC release rather than cited as a fixed figure.]

Why It Matters for eTMF Software

Nearly every commercial eTMF platform ships with the TMF Reference Model (or a vendor-specific variant mapped to it) as its default filing structure, because a shared taxonomy is what makes three things possible: migrating or reconciling TMF content between a sponsor and a delegated CRO without relabeling everything, running an automated completeness dashboard that checks for the presence of specific expected artifacts rather than a subjective folder review, and giving inspectors and auditors a filing structure they already recognize from other trials. A TMF can be complete and ICH E6(R2)-compliant in content without being mapped to the Reference Model — but doing so is now close to universal practice precisely because of the interoperability and audit benefits above.

Related Terms

Use in your systems

JATS XML <role> element

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Schema.org DefinedTerm (JSON-LD)

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