Ethics Approval and IRB
Core summary
All research involving human participants requires ethical oversight. Institutional Review Boards (IRBs) or Research Ethics Committees (RECs) review research proposals to protect participant rights, safety, and welfare. Core principles come from the Belmont Report: respect for persons, beneficence, and justice.
Detailed explanation
Detailed explanation
The history of research ethics is shaped by abuses: the Nuremberg trials revealed Nazi experimentation, leading to the Nuremberg Code (1947). The Declaration of Helsinki (1964, regularly updated) established physician-researcher obligations. The Belmont Report (1979) defined three core principles: Respect for persons (autonomy and protection of vulnerable individuals — operationalized through informed consent), Beneficence (maximizing benefits and minimizing risks), and Justice (fair distribution of research burdens and benefits). IRBs/RECs independently review research protocols before data collection begins. They assess: the risk-benefit ratio, informed consent procedures and documents, participant selection fairness, data confidentiality protections, and vulnerable population safeguards. Informed consent must include: study purpose, procedures, risks, benefits, alternatives, right to withdraw at any time, and confidentiality protections — presented in language the participant can understand. Some research qualifies for exempt or expedited review (e.g., minimal risk surveys, use of de-identified data). Clinical trials must also be registered (e.g., on ClinicalTrials.gov) before enrollment begins.
Clinical example
Before starting your RCT on a new pain medication, you submit the protocol, consent forms, and data management plan to your hospital's IRB. They request modifications to the consent form (simpler language, clearer risk description) and ask you to add a Data Safety Monitoring Board. Only after approval can you enroll patients.
Research example
The Tuskegee Syphilis Study (1932-1972) became a pivotal case in research ethics. Researchers withheld treatment from African American men with syphilis to study the natural history of the disease. Its exposure directly led to the Belmont Report and modern IRB requirements.
Knowledge check
Q1. What are the three core principles of the Belmont Report?
Q2. What must informed consent include?
Q3. When must IRB approval be obtained?