Essential Documents

Essential documents in clinical research are records that allow the conduct of a clinical trial, compliance with Good Clinical Practice (GCP) and applicable regulatory requirements, and the reliability of trial results to be evaluated.

ICH E6(R3) uses the broader term “essential records” and recognizes that the nature and extent of records required may vary according to the trial design, trial conduct, risk-proportionate approaches, and the importance and relevance of individual records.

The current framework is described in the ICH E6(R3) Guideline for Good Clinical Practice.

Purpose of Essential Documents

Essential documents and records provide evidence that a clinical trial has been appropriately planned, conducted, monitored and documented.

They support sponsor and investigator oversight and may be reviewed during monitoring, audits and regulatory inspections. Certain records may also be reviewed by Institutional Review Boards or Independent Ethics Committees (IRBs/IECs) according to applicable requirements.

For more background on the organisation responsible for developing internationally harmonised GCP guidance, see International Council for Harmonisation (ICH).

Examples of Essential Documents and Records

Depending on the trial, essential records may include:

• Clinical trial protocol and amendments
• Investigator’s Brochure and relevant updates
• Participant information and informed consent materials
• IRB/IEC submissions, opinions and approvals
• Regulatory authority submissions and authorisations, where applicable
• Investigator and study personnel qualification records
• Trial-specific training and delegation records
• Agreements between sponsors, investigators, institutions and service providers
• Case Report Forms (CRFs) and relevant trial data records
• Monitoring and oversight documentation
• Safety reports and relevant safety communications
• Investigational product shipment, storage and accountability records
• Laboratory certifications, reference ranges and relevant test documentation
• Statistical and data-management documentation
• Relevant correspondence and communications
• Documentation concerning trial close-out and archiving

The exact set of essential records depends on the nature and requirements of the individual clinical trial.

Essential Records Before and During the Trial

Some essential records should generally be available before trial activities begin. These may demonstrate that the trial has been appropriately designed and authorised, investigators and facilities are suitable, relevant parties have agreed to their responsibilities, and required ethical and regulatory requirements have been addressed.

Other records are generated or updated during trial conduct. These document areas such as participant management, investigational product accountability, safety reporting, monitoring, protocol changes, data collection and continuing oversight.

Records generated toward the end of the trial help document appropriate close-out, final accountability, reporting and archiving activities.

Trial Master File and Investigator Site File

Essential records should be maintained in, or referenced from, appropriate repositories.

The sponsor’s repository is commonly referred to as the Trial Master File (TMF), while the repository maintained by the investigator or institution is commonly referred to as the Investigator Site File (ISF).

The sponsor and investigator/institution should maintain appropriate records of where essential records are located, including relevant source records.

Management of Essential Records

Essential records should be identifiable and appropriately version controlled. Where applicable, records should identify relevant authors, reviewers and approvers and include required dates and signatures.

Systems used to maintain and archive trial records should support appropriate identification, version history, search and retrieval.

Essential records should also be collected and filed in a timely manner rather than being reconstructed only when an audit or inspection is expected.

Responsibilities for Essential Records

Sponsors and investigators/institutions are responsible for maintaining the essential records relevant to their respective trial responsibilities.

When important trial-related activities are transferred or delegated to service providers, arrangements should address access to, management of and retention of the associated essential records.

The use of service providers does not eliminate the need for appropriate sponsor and investigator oversight.

Importance of Essential Documents in Clinical Research

Essential documents in clinical research provide evidence of how a trial was planned, conducted and overseen. Well-maintained records support participant protection, data reliability, GCP compliance, effective oversight and inspection readiness.

The essential-records framework should therefore be applied according to the characteristics and risks of the individual trial rather than treated simply as a fixed checklist of documents required for every clinical study.

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