What are the principles of ICH GCP?
A complete guide for clinical research professionals
Introduction: The evolution from 13 to 11 principles
As the industry shifts away from the R2 framework, many professionals are asking: What are the 11 principles of ICH GCP and how do they differ from the previous 13? Understanding these changes is the first step toward R3 compliance.”
If you are wondering how many principles of ICH GCP are there, the answer depends on which version of the guidelines you are following: ICH E6 R2 had 13 principles, while the updated ICH E6 R3 consolidates these into 11 modern, high-level principles.
If you have been in clinical research for a while, you probably have the 13 principles of GCP memorized. However, the landscape has shifted. With the finalization and implementation of ICH E6(R3), the industry has moved to a more streamlined, risk-based framework consisting of 11 overarching principles.
Why the change? The previous version (R2) was written in an era where paper was king. Today, we live in a world of decentralized clinical trials (DCTs), wearables, and Real-World Data (RWD). The R3 update isn’t just a “shortening” of the list; it is a total modernization of how we protect participants and ensure data integrity.
In this guide, we will break down exactly what these 11 principles are, how they differ from the old 13-principle model, and why understanding this shift is critical for your career in clinical research.
Quick Answer: ICH GCP E6 R2 contained 13 principles. ICH E6 R3 (finalized January 2025) restructured these into 11 principles, removing redundancies and adding new concepts like Quality by Design and Proportionality. The first principle remains ethical conduct.
Before we dive into the technical details, let’s establish a clear answer to the fundamental question: What are the 11 principles of ICH GCP in the context of modern clinical trials?
ICH E6 R2 organised GCP around 13 principles. ICH E6 R3 restructured these into 11, consolidating overlapping concepts and adding two genuinely new ones: Quality by Design (Principle 6) and Proportionality (Principle 7). For the full comparison of ICH GCP E6 R2 and R3 principles, see our detailed blog post.
Foundations – What is Good Clinical Practice (GCP)?
What is Good Clinical Practice (GCP) and why is it important?
Good Clinical Practice is an international ethical and scientific quality standard for the design, conduct, recording, and reporting of trials that involve the participation of human subjects.
When stripping clinical research down to its basics, there are two underlying principles of ICH GCP that every professional must know: the rights, safety, and well-being of participants and the reliability and integrity of trial data. >
To help students memorize these, we often refer to the three core elements of GCP, which act as the conceptual pillars of the entire framework:
- Participant Protection (Ethics)
- Scientific Soundness (Methodology)
- Data Integrity (Reliability)
For a deeper look at why GCP matters, read our full guide on the importance of Good Clinical Practice.
Why is it important?
- Participant Safety: It ensures that humans aren’t treated as “guinea pigs” and that their rights are protected.
- Data Reliability: It ensures the results of a trial are actually true. Without GCP, a pharmaceutical company could “fudge” data to get a dangerous drug onto the market.
- Global Acceptance: Because GCP is harmonized (via the ICH), a trial conducted in Japan can be used for drug approval in the USA or Europe.
What is the difference between ICH and GCP?
The International Council for Harmonisation (ICH) is the organization (the “committee”) that brings together regulatory authorities and the pharmaceutical industry. GCP is simply one of the many guidelines they produce, specifically, the E6 guideline.
What are the aims of clinical research?
The goal of clinical research is to generate “generalizable knowledge” to improve medical care. This is distinct from standard medical practice. In a clinic, the doctor’s primary goal is the individual patient. In clinical research, the primary goal is to follow a protocol to see if a treatment works for all future patients, while keeping the current participant safe.
What are the Principles of ICH GCP E6 (R3)?
Unlike the older 13 principles, the R3 principles are designed to be “media-neutral.” They apply whether you are using a paper CRF or an AI-driven electronic data capture system.
Please note that in the official ICH E6(R3) guideline, these principles are presented as integrated regulatory text. To facilitate better learning, retention, and quick reference, we have assigned descriptive titles to each principle. These titles capture the “core intent” of the requirement to help you identify Critical to Quality (CtQ) factors more efficiently.
Principle 1: Ethical conduct
The first principle of GCP is ethical conduct: “Clinical trials should be conducted in accordance with the ethical principles that have their origin in the Declaration of Helsinki”.
This foundational rule dictates that clinical trials must be conducted in accordance with the ethical principles of the Declaration of Helsinki, ensuring that the well-being of the person always comes before the interests of science. When defining the 11 principles of ICH GCP, the first and most critical pillar is always the protection of human participants. This remains the “Golden Rule.” Ethical standards, specifically the Belmont Report principles of Respect for Persons, Beneficence, and Justice, must guide every decision. Under R3, there is an increased focus on the diversity of trial populations to ensure justice in who benefits from the research.
Principle 2: Informed consent
“Freely given informed consent should be obtained from every participant”.
In R3, informed consent is treated as a continuous process, not a one-time signature. The guidelines now explicitly embrace eConsent and multimedia tools, acknowledging that participants should be able to review information at their own pace. R3 also emphasises that the information provided must be concise and understandable, if a participant does not genuinely understand the trial, the consent is not legally or ethically valid.
Principle 3: IRB/IEC review
“Trials must be reviewed and receive a favorable opinion by an Independent Ethics Committee”.
This “checks and balances” system ensures that a neutral third party agrees the trial’s risks are outweighed by the potential benefits. R3 clarifies that the IRB/IEC must have the necessary documentation to assess the trial’s operational feasibility.
Principle 4: Scientific soundness
“Clinical trials should be scientifically sound and described in a clear, detailed protocol”.
You cannot experiment on humans without a valid scientific justification. The protocol must be robust and, crucially, feasible. R3 places a heavy emphasis on avoiding “unnecessary complexity” in trial design, if a protocol is too hard to follow, it increases the risk of error.
Principle 5: Qualified personnel
“Individuals involved in a trial should be qualified by education, training, and experience”.
This answers the common question: Who is required to complete GCP training? Anyone with a role in the trial. R3 adds that the Investigator is responsible for supervising any individual or party to whom they delegate trial-related tasks.
Principle 6: Quality by design (The core of R3)
“Quality should be built into the design and conduct of the trial.”
If you are studying for a certification exam, you will notice that among the principles of ICH GCP, Quality by Design stands out as the most revolutionary update. This is the “crown jewel” of R3. Instead of the old “check for errors at the end” approach, Quality by Design means identifying what matters most to the trial’s success before a single participant is enrolled. If a piece of data doesn’t impact safety or the trial’s conclusion, it shouldn’t be a priority.
Principle 7: Proportionality
“Trial processes should be proportionate to the risks to participants and the importance of the data”.
Proportionality is one of the most important principles of ICH GCP for new researchers to understand, as it allows for flexibility based on trial risk. This approach is a new pillar. Not all trials carry the same risk. A “low-intervention” trial (using a drug already on the market) should not have the same administrative burden as a First-in-Human study. This makes research more efficient without sacrificing safety.
Principle 8: Protocol compliance
“Clinical trials should be conducted in accordance with the protocol”.
Compliance is non-negotiable. R3 clarifies how to handle Protocol Deviations, emphasizing that the priority is always the participant’s safety. Documentation must explain why a deviation happened and what was done to prevent it from happening again.
Principle 9: Data integrity & ALCOA++
“Clinical trial information should be recorded, handled, and stored to allow accurate reporting and verification”.
Data must be ALCOA++: Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available, and Traceable. R3 adds that this requirement applies to “records” in any format, including metadata and audit trails. This means that these rules apply whether you use a paper notebook or a decentralized cloud platform.
Principle 10: Roles and responsibilities
“Roles and tasks should be clearly defined and documented”.
In the age of Contract Research Organizations (CROs) and third-party vendors, it’s easy for responsibilities to get blurred. R3 demands clear documentation of who is doing what. Remember: You can delegate a task, but you can never delegate the ultimate responsibility for the trial.
Principle 11: Investigational products
“Investigational products should be manufactured and handled according to Good Manufacturing Practice (GMP)”.
Finally, to complete the list of ICH GCP principles, we must include the strict standards for Investigational Product (IP) handling and GMP compliance. The “study drug” must be handled with extreme care to ensure its stability and potency. R3 emphasizes that handling must follow the protocol exactly to ensure that the collected data are representative of the drug being tested. Participants must receive the exact dose and quality of the drug intended by the protocol. Proper storage and “chain of custody” are vital.
Summary of the 13 ICH GCP E6 R2 principles:
For those still referencing the older standard, the ICH GCP E6 R2 principles were:
- Ethical conduct based on Helsinki.
- Risk vs. Benefit assessment.
- Subject protection as the priority.
- Adequate non-clinical/clinical info to support the trial.
- Scientifically sound protocol.
- IRB/IEC compliance.
- Medical care provided by qualified physicians.
- Qualified personnel for all tasks.
- Informed consent obtained from every subject.
- Accurate records and reporting.
- Confidentiality of records.
- GMP compliance for investigational products.
- Quality assurance systems and processes.
Want to see a side-by-side comparison? Read our full R2 vs R3 guide here.
One of the most frequent questions we receive is: “Is ICH GCP certification easy?” and “Is it worth it?”.
If you are applying for a job in clinical research, a GCP certificate is your “driver’s license.” You cannot get behind the wheel of a clinical trial without it.
- For doctors: It allows you to act as a Principal Investigator.
- For graduates: It is often the “entry ticket” to becoming a Clinical Research Coordinator (CRC).
- For professionals: With the R3 update, having a “2026 R3-Compliant” certificate on your LinkedIn profile puts you ahead of 90% of the workforce still using R2 credentials.
How long is GCP training and how long does it last?
Most ICH GCP courses take between 4 and 8 hours of active study. Once you pass the exam, the certificate is typically valid for 3 years. However, because the shift from 13 to 11 principles is so significant, most employers are currently requiring an “R3 Bridge Course” or a full recertification immediately.
Staying ahead: How to transition smoothly to the new ICH GCP standards
The shift to ICH E6(R3) is more than just a change in the number of principles. It is a shift in mindset, from “checking boxes” to “managing risk.”
By understanding these 11 principles, you aren’t just complying with a regulation; you are ensuring that the next generation of life-saving medicines is developed safely, ethically, and efficiently.
Are you ready to upgrade your career?
At PharmaEduCenter, our certification programmes are the first to be fully updated for the ICH E6(R3) standards. Don’t rely on outdated R2 training. Get certified for the future of clinical research today. Explore our ICH GCP courses here.
Now that you can confidently answer the question, “What are the 11 principles of ICH GCP”, it’s time to apply this knowledge to your daily clinical operations.”
FAQ: What are the principles of ICH GCP?
What happened to the other 2 principles of ICH GCP R2?
The 13 principles of R2 were consolidated. For example, “Confidentiality” and “Records” were merged into the broader “Data Integrity” and “Ethical Conduct” principles to avoid redundancy and reflect the digital nature of modern records.
Where can I find a complete list of the principles of ICH GCP?
You can find a complete breakdown of the principles of ICH GCP in the official E6 (R3) guidance document, or via our downloadable poster.
Is ICH E6 R3 mandatory?
In most regions, yes. While the ICH guidelines are technically “guidance,” regulatory bodies like the FDA (USA) and EMA (Europe) adopt them into their regulations. If you don’t follow GCP, your trial data will be rejected.
What is the highest-paying job in clinical research?
Typically, Clinical Project Managers and Medical Directors earn the highest salaries. However, specialized roles like Clinical Data Managers and Regulatory Affairs Specialists are also seeing massive salary growth due to the complexity of the R3 guidelines.
What is the Belmont Report?
The Belmont Report (1979) is the ethical foundation of GCP. It was created following the Tuskegee Syphilis Study to ensure that researchers never again prioritize science over human life. It has three principles: Respect for Persons, Beneficence, and Justice.
What are the 3 main GCP principles?
While the latest version of the guidelines officially answers the question, “What are the 11 principles of ICH GCP,” many researchers conceptually group these into three “Core Pillars” or themes. Although ICH E6(R3) doesn’t officially label them as “The Three Principles,” the entire framework is built upon this conceptual backbone:
- Ethical Conduct (Participant Safety): This is the “Why” behind the guidelines. It encompasses the protection of human rights, the informed consent process, and independent oversight by the IRB/IEC. It ensures that the safety of the individual always comes before the interests of science.
- Scientific Soundness (Methodology): This is the “How.” It covers the need for a robust protocol, qualified personnel, and the new Quality by Design (QbD) approach. It ensures that the trial is designed in a way that actually answers the scientific question it sets out to solve.
- Data Integrity (Reliability): This is the “Result.” It focuses on the ALCOA+ principles, ensuring that the information collected is accurate, complete, and verifiable. Without data integrity, the entire trial is useless for regulatory approval.
By understanding these three themes, it becomes much easier to memorize and apply the 11 principles of ICH GCP in a real-world clinical setting.
Which of the following is NOT a principle of GCP?
This ia a common exam question. Things that are NOT standalone GCP principles include: statistical analysis methods, marketing authorisation requirements, and pricing regulations. A helpful rule of thumb: if it is not directly related to participant safety, scientific soundness, or data integrity, it is unlikely to be a GCP principle. The 11 principles of ICH E6 R3 focus exclusively on the ethical conduct, quality, and reliability of clinical trial processes.
