What a Conflict of Interest Is

Part of Conflict of Interest in Clinical Research: What a Conflict of Interest Is and Why It Matters.

About 5 minutes. Free, in your language, no account needed.

Expert review pending. CRLN wrote this lesson against the primary sources listed under References. A subject-matter expert has not yet reviewed it. Where your institution's policy or your sponsor's instructions are stricter, follow them.

Why this matters

Everyone who works on a clinical trial makes judgment calls. Is this person eligible? Was that headache related to the study drug? Is this participant ready to sign the consent form, or do they need more time? A conflict of interest is any situation where something you stand to gain or lose could pull those calls in one direction.

Having a conflict is common and is not, by itself, wrongdoing. Hiding one, or letting it steer a decision, is the problem. This course teaches you to recognize conflicts, disclose them to the right people, and work inside the plan that manages them.

ICH E6(R3) is the international baseline in this course. US federal rules are taught as the detailed worked example, and any passage that names a US regulation is US law, not a universal rule. Outside the United States, your national law and ethics committee requirements apply.

A working definition

A conflict of interest exists when a secondary interest could influence, or could reasonably appear to influence, a person's primary duty. In clinical research the primary duties are protecting the rights, safety and well-being of participants and producing reliable data. Secondary interests are anything else a person cares about: money, career, reputation, relationships.

The definition has three parts worth noticing:

• It is about risk, not proof. You do not need to show that a decision was actually biased. The question is whether the interest could affect it.
• It covers appearances. A participant or regulator who learns about an undisclosed stake will doubt the work even if every decision was sound.
• It is personal to the role. The same shares mean something different for the investigator who assesses efficacy than for a staff member who never touches the data.

Four kinds of conflict

Financial. Money or something with money value that could change with the trial's result or the sponsor's fortunes. The US Food and Drug Administration (FDA) names the main forms in its financial disclosure rule: payment arranged so it could be higher for a favorable outcome, such as a royalty; a proprietary interest in the product, such as a patent; and an equity interest in the sponsor (21 CFR 54.1 and 54.2). The US Public Health Service rule for federally funded research adds salary, consulting fees, honoraria and paid authorship from an outside entity (42 CFR 50.603).

Professional. Career interests: authorship, a promotion that depends on enrollment numbers, a reputation built on a particular treatment, or a role on the sponsor's advisory board.

Personal. Relationships: enrolling a relative, a close friend or a colleague you supervise, or a family member who works for the sponsor.

Institutional. The organization itself has a stake, for example when the hospital holds a license to the product or equity in the company that makes it, or when a senior leader who controls your department's budget has a financial tie to the sponsor.

Real, potential and perceived

People often sort conflicts into three groups:

• A real (actual) conflict is one where the interest is present and the person is in a position to act on it now.
• A potential conflict is one that would become real if circumstances changed, such as a coordinator who might be offered a job by the sponsor's contract research organization.
• A perceived conflict is one where a reasonable outsider would think judgment could be affected, even if the person believes it is not.

You do not need to decide which group you are in before you disclose. Disclosure is how the people responsible for managing conflicts get the facts they need to make that call.

Who protects the decision

The structure of research ethics assumes conflicts exist. ICH E6(R3) requires that trials be subject to independent review by an institutional review board or independent ethics committee (Principle 3), and only committee members who are independent of the investigator and the sponsor should vote or give an opinion (Annex 1 §1.3.1). The Declaration of Helsinki asks that the protocol state sources of funding and any potential conflicts of interest (paragraph 22), and that potential participants be told about them (paragraph 26).

In practice

A research nurse is asked to join a sponsor's paid speaker program. She has no equity and no patent. She tells her investigator and her institution's conflict of interest office before she accepts, and she asks whether it affects the trials she works on. The office records the disclosure and tells her what, if anything, changes in her duties.

Key takeaways

• A conflict of interest is a secondary interest that could influence, or appear to influence, your primary duty to participants and data.
• Conflicts can be financial, professional, personal or institutional.
• Having a conflict is common; concealing it or letting it steer a decision is the problem.
• You do not need to classify a conflict before disclosing it. Disclose and let the responsible office decide.

References

• 21 CFR 54.1 (purpose) and 54.2(a) to (c) (definitions), eCFR.
• 42 CFR 50.603, definition of significant financial interest, eCFR.
• ICH E6(R3) Guideline for Good Clinical Practice, Step 4, 6 January 2025: Principle 3; Annex 1 §1.3.1.
• World Medical Association, Declaration of Helsinki, 2024 revision, paragraphs 22 and 26.