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Clinical & Trials [Clinical Evidence](/ecosystems/clinical-evidence)IRB 

# Institutional Review Board

Board that reviews and approves human-subjects research at an institution.

Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 

## Definition

An IRB is a committee that reviews biomedical research involving human subjects to ensure their rights and welfare are protected, per 21 CFR Part 56. 

What the regulation says

The FDA, under 21 CFR Part 56, mandates Institutional Review Board (IRB) review for clinical investigations involving human subjects to protect their rights, safety, and welfare. Similarly, clinical investigations conducted in the European Union must obtain a favorable opinion from an ethics committee, as outlined in the EU  [MDR](/terms/mdr-reporting) 2017/745, Article 58. These regulatory requirements ensure that research protocols are ethically sound and scientifically valid. 

## What this means in practice

Both SR and NSR device studies require IRB approval. Non-U.S. trials use equivalent ethics committees. 

## Examples

-   A MedTech company developing a new cardiac stent must submit its clinical investigation plan, including the informed consent form and patient recruitment materials, to an IRB for approval before enrolling any patients.
-   A medical device manufacturer conducting a post-market surveillance study involving patient surveys must obtain IRB clearance, even if the data collected is de-identified, to ensure ethical considerations are met.
-   A researcher modifying a previously approved study protocol to include a new patient population or a different data collection method must submit an amendment to the IRB for review and authorization prior to implementing the changes.

Common pitfalls

-   • Failing to obtain IRB approval before initiating a clinical investigation can lead to regulatory non-compliance and invalidation of study data. 
-   • Misinterpreting the scope of IRB review, assuming it only applies to interventional studies and not to observational studies or studies using existing de-identified data, is a common pitfall. 
-   • Not ensuring that all investigators and research staff have completed appropriate human subjects protection training can result in IRB findings and study delays. 
-   • Neglecting to submit modifications to an approved study protocol to the IRB for review and approval prior to implementation can be a serious regulatory violation. 
-   • Assuming that an IRB approval from one institution is automatically transferable to another without formal review and acceptance by the second institution's IRB is incorrect and can lead to unapproved research activities. 

## Frequently asked questions

What is the primary role of an IRB? 

The primary role of an IRB is to review and approve research activities involving human subjects to ensure their rights, safety, and welfare are protected according to ethical principles and regulatory requirements. 

Are all clinical studies required to have IRB review? 

What is the difference between an IRB and an Ethics Committee? 

## Cross-references

### Uses

Concepts or artefacts this term builds on.

-   [
    
    Informed Consent
    
    
    
    ](/terms/informed-consent)

## Related terms

Grouped by theme 

### Editor's picks

· Hand-selected related concepts 

[

Clinical & Trials

Informed Consent

Voluntary, informed agreement to participate in research after disclosure of risks and benefits.





](/terms/informed-consent)[

Clinical & Trials

Investigational Device Exemption(IDE) 

FDA authorization to use an investigational device in a clinical study.





](/terms/ide)

### Clinical Trials & Evidence

· From this learning path 

[

Clinical & Trials

IDE Annual Progress Report

Annual report sponsors must submit to FDA summarizing the progress of an approved IDE study, including enrollment, deviations, and adverse events.

Adjacent lesson 

](/terms/ide-annual-report?from=clinical-trials-and-evidence)[

Clinical & Trials

Adaptive Trial Design

Trial design that pre-specifies opportunities to modify aspects (sample size, arms, endpoints) based on interim data.





](/terms/adaptive-trial?from=clinical-trials-and-evidence)[

Clinical & Trials

Adverse Event(AE) 

Any untoward medical occurrence in a subject, whether or not related to the device.





](/terms/adverse-event?from=clinical-trials-and-evidence)[

Clinical & Trials

Clinical Evaluation Report(CER) 

Documented assessment of clinical data demonstrating EU MDR conformity for a device.





](/terms/cer?from=clinical-trials-and-evidence)

### More in Clinical & Trials

· Same category 

[

Clinical & Trials

Feasibility Study

Small clinical study evaluating initial safety, usability, and design parameters of an investigational device.





](/terms/feasibility-study)[

Clinical & Trials

IDE Supplement

Amendment to an approved Investigational Device Exemption for protocol or device changes.





](/terms/ide-supplement)

Cited by

Where this term appears across MedTech Terms.

Learning paths (1)

-   [Clinical Trials & Evidence](/paths/clinical-trials-and-evidence)Lesson 4 of 18 

Ecosystems (1)

-   [Clinical Evidence](/ecosystems/clinical-evidence)

## Primary references

3 sources 

Link health:  3 verified · last checked 2026-06-20 

eCFR· 1 ICH· 1 ISO· 1 

1.  [1 
    
    21 CFR Part 56
    
    Verified 
    
    eCFR · ecfr.gov 
    
    
    
    ](https://www.ecfr.gov/current/title-21/chapter-I/subchapter-A/part-56)
2.  [2 
    
    ICH Guidelines
    
    Verified 
    
    ICH · ich.org 
    
    
    
    ](https://www.ich.org/page/ich-guidelines)
3.  [3 
    
    ISO 14155 Standard Page
    
    Verified 
    
    ISO · iso.org 
    
    
    
    ](https://www.iso.org/standard/71690.html)

Inline markers like \[1\]  jump to the matching reference above.

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On this term

Category

Clinical & Trials

Acronym

IRB

Sources

3

Updated

5/5/2026

[Compare with another term](/compare?a=irb)

Learn in 60 seconds

Card Lesson Quiz

Board that reviews and approves human-subjects research at an institution.

-   · Both SR and NSR device studies require IRB approval. 
-   · Non-U.S. 
-   · trials use equivalent ethics committees. 

Remember this

Watch out: Failing to obtain IRB approval before initiating a clinical investigation can lead to regulatory non-compliance and invalidation of study data.

Related terms

-   [Investigational Device Exemption(IDE) ](/terms/ide)
-   [Informed Consent ](/terms/informed-consent)

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Auto-suggested from Clinical & Trials and shared keywords.

-   [Data Safety Monitoring Board(DSMB) ](/terms/dsmb)
-   [IDE Annual Progress Report ](/terms/ide-annual-report)
-   [Performance Study (IVDR) ](/terms/ivdr-performance-study)
-   [Unanticipated Adverse Device Effect(UADE) ](/terms/uade)
-   [Human Factors Engineering(HFE) ](/terms/human-factors)
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[All Clinical & Trials terms](/terms?cat=Clinical%20%26%20Trials)

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