The importance of monitoring in clinical trials
Monitoring provides ongoing oversight of trial quality and compliance. It detects protocol deviations, ethical breaches, and non-conformities with GCP. Through regular visits, the monitor verifies documentation completeness, source-data quality, and the informed-consent process. Acting on behalf of the sponsor and being independent of the site, the monitor guarantees objectivity.
Scope and cycle of clinical-trial monitoring
Monitoring spans the project’s entire life cycle—from site initiation to study close-out. The scope is risk-based and aligned with the ISO 13485 quality system guidelines. It verifies:
- participant recruitment and adherence to inclusion criteria,
- the informed-consent process,
- clinical-data entry and reporting,
- management of adverse events and source documentation.
For studies incorporating decentralised trial elements, Digital Health Technologies (DHT), or Real-World Data (RWD), monitoring also extends to activities performed outside the investigational site. According to ICH E6(R3) Annex 2, the monitoring strategy should follow a risk-based approach, taking into account the reliability of data sources, methods of data collection, and the ability to verify source data throughout the study.
Pre-study monitoring
The pre-study visit assesses site infrastructure, staff competencies, protocol familiarity, and document-storage procedures. At this stage the monitor confirms that the site meets the requirements to participate and aligns with the clinical-trial project assumptions.
Monitoring during trial conduct
During on-site visits the monitor checks:
- correct recruitment and consent procedures,
- data entry into EDC systems,
- compliance with the protocol and GCP,
- timely SAE/SUSAR reporting.
If non-compliance is detected, the monitor initiates corrective actions and provides staff training, ensuring data credibility and consistency.
Post-trial monitoring
The close-out visit completes the monitoring cycle and covers:
- verification of documentation completeness,
- secure archiving of source data,
- return or disposal of investigational devices,
- preparing the study for the results-reporting process.
Study closure must comply with GCP, ISO 14155, and local regulatory requirements.
Monitoring in accordance with GCP principles
All monitoring activities should be conducted in accordance with the principles of ICH-GCP, including the latest recommendations introduced in ICH E6(R3). For studies incorporating decentralised trial elements, remote visits, electronic health records (EHR), or Digital Health Technologies (DHT), sponsors should implement a proportionate, risk-based oversight strategy that ensures appropriate control over data quality, participant safety, and regulatory compliance.
The monitor must ensure that:
- the study is conducted ethically and in line with the protocol,
- participants are properly informed and protected,
- data are complete, consistent, and verifiable,
- processes meet sponsor and notified-body requirements.
The monitor’s role in ensuring compliance and quality
The monitor functions as an operational auditor, tasked with:
- identifying non-conformities and procedural risks,
- supporting the study team in corrective actions,
- reporting progress to the sponsor,
- working with clinical- and regulatory-risk teams, e.g. in risk management.
Expert support in clinical-trial monitoring
Pure Clinical provides end-to-end operational support for monitoring, including:
- preparing monitoring plans compliant with MDR and GCP,
- conducting training for study teams,
- auditing sites and assessing operational readiness,
- document control and compliance reporting.
How Pure Clinical Supports Clinical Trial Monitoring
Pure Clinical supports sponsors with monitoring activities for clinical investigations of medical devices conducted at single or multiple sites. Monitoring activities are planned according to the study design, risk profile, number and location of sites, and applicable regulatory and quality requirements.
Depending on the project, support may include:
- Monitoring strategy and planning – development of monitoring approaches for single-site and multi-site clinical investigations, including definition of monitoring activities and schedules.
- Monitor coordination – coordination of monitoring activities across national and international study sites.
- Monitoring documentation – preparation and maintenance of monitoring plans, control documents, visit documentation, and monitoring visit reports.
- Regulatory and quality oversight – monitoring activities conducted in accordance with applicable requirements, including ISO 14155:2022 and relevant Notified Body requirements, where applicable.
- Follow-up and issue tracking – documentation and follow-up of findings, action items, and issues identified during monitoring activities.
Pure Clinical supports structured and traceable monitoring processes throughout the clinical investigation, taking into account the study protocol, site-specific conditions, and applicable regulatory requirements.
FAQ
What competencies and qualifications should an effective clinical trial monitor have?
What are the most common errors identified during monitoring visits?
How can technology support remote monitoring processes?
Remote monitoring is enabled by eSource, eISF, and integrated EDC platforms that provide real-time access to study data and documentation. Advanced tools also allow for virtual visits through secure video links and electronic audit trails. This is especially valuable for multicenter trials or in hard-to-reach study locations.