Ensuring inspection readiness: how Aixial Group delivers an audit-ready trial master file

In today’s clinical research environment, inspection readiness is no longer a milestone reserved for study close-out, it is an operational mindset that must be embedded from day one. At Aixial Group, we know our clients entrust us not only with trial execution, but with the stewardship of one of the most critical assets of any clinical study: the Trial Master File (TMF).
A robust, inspection-ready TMF is fundamental to demonstrating compliance, protecting patient safety, and safeguarding the integrity of clinical trial data. Regulators do not inspect intentions—they inspect evidence. The TMF is that evidence.
Date: 08 January 2026 | Ref: BL001
The regulatory foundation of the TMF
Global health authorities are aligned in their expectations of the TMF as the primary means of demonstrating compliance and enabling reconstruction of the trial.
- ICH GCP E6 (R2) states that:
“Essential documents permit evaluation of the conduct of a trial and the quality of the data produced.” Section 8 of ICH GCP emphasises that essential documents must be complete, accurate, and maintained throughout the trial lifecycle, not created retrospectively.
Both the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA) reinforce this expectation through inspection findings and published guidance, consistently highlighting TMF deficiencies as a leading cause of critical observations.
- EMA expectations:
- The TMF must be available at all times for inspection
- Sponsors and CROs must demonstrate ongoing oversight
- TMF management should be risk-based and proportionate
- FDA expectations:
- The TMF must enable independent reconstruction of the trial
- It should demonstrate compliance with 21 CFR Parts 50, 56, and 312
- Documentation should be timely and contemporaneous, with authentic version control
At Aixial Group, these expectations are non-negotiable and directly shape how we operationalise inspection readiness.
Inspection readiness by design, not by reaction
Inspection readiness is achieved through quality by design, beginning at study start-up and sustained throughout the trial lifecycle. A project-specific TMF Plan defines how the TMF will be governed and maintained, in line with ICH GCP Section 5.1, which places responsibility on Sponsors (and their delegated CROs) to implement quality systems.
This plan clearly defines:
- Roles and responsibilities across Sponsors, Aixial Group internal team, and vendors
- TMF access and training requirements
- Quality control standards
- TMF completeness and oversight processes
- TMF transfer and archival at study close
This structured approach ensures alignment with regulatory expectations and demonstrable oversight.
Clear ownership and contemporaneous filing
Despite these challenges, regulatory expectations for patient safety, benefit–risk assessment, and compliance remain unchanged. Regulators consistently cite delayed or retrospective filing as a TMF risk. In response, document ownership is clearly defined within the TMF Index, ensuring accountability at the functional level.
Our expectation is that finalised documents are filed contemporaneously, typically within 30 calendar days, by the document owner. This supports:
- ICH GCP requirements for timely documentation
- EMA expectations for inspection-ready TMFs at any point
- FDA scrutiny of document authenticity and version control
Contemporaneous filing is not just operational efficiency – it is regulatory compliance.
Data-Driven oversight and risk-based monitoring
ICH GCP E6 (R3) introduced a strong emphasis on risk-based quality management. Leveraging eTMF system data, ongoing inspection readiness and TMF health reports are provided to project teams, enabling early identification of gaps and trends.
This approach aligns with Regulators’ expectations with issues identified and addressed early, well before they become inspection findings.
Continuous quality control to meet global expectations
Quality cannot be added in at the end. A two-step quality control process is applied to all TMF artifacts:
- Initial QC by the document owner
- Secondary QC by a specialised TMF team
This layered review ensures alignment with internal SOPs and industry standards, and supports inspection defensibility.
Secure, validated eTMF systems
Technology underpins inspection readiness. A validated eTMF system with full audit trails, role-based access, and permission controls ensures data integrity and compliance. Access is granted only after TMF-specific training, reinforcing both security and accountability.
Confident close-out and TMF transfer
Before study close-out, a final completeness and quality review is conducted, ensuring all findings are resolved prior to TMF transfer. Sponsors receive a TMF that is complete, compliant, and inspection-read, meeting both regulatory and archival expectations.
What clients should expect from their CRO
An audit-ready TMF is the result of:
- Early and deliberate planning aligned with ICH GCP
- Clear ownership and accountability
- Timely, contemporaneous filing
- Continuous quality control
- Risk-based, data-driven oversight
As a CRO, our role is to operationalise regulatory expectations and remove uncertainty from inspections. By embedding TMF excellence into our daily processes, we enable our clients to face inspections with confidence, at any point in the trial lifecycle.
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