11.3 Conflicts of Interest and Prorated Payments
Key Takeaways
Conflicts can involve financial, professional, family or hierarchical interests.
Disclosure and proportionate management are distinct steps.
Participant payment and sponsor payments to the site are different flows.
Conflicts of Interest and Prorated Payments
The ECO specifically includes financial interests of investigators/staff and family or site participation in a trial. The monitor should recognise situations needing disclosure and appropriate review, verify that the trial's process was followed and escalate concerns. The CRA should not invent a universal dollar threshold or conclude that any equity holding automatically disqualifies an investigator. Country-specific financial forms and thresholds are outside ACRP's stated examination reference scope.
Disclosure and management
A useful process identifies the relationship, the relevant decision-making role, who reviews it, what safeguards are imposed and when it must be updated. Management can involve independent review, separation of responsibilities, additional oversight or restrictions on participation as appropriate. The responsible institution, sponsor and ethics committee functions determine the applicable measures.
For example, an investigator with a product-related financial interest might also recruit and assess a subjective endpoint. Disclosure alone does not remove the potential influence. Independent assessment or another proportionate control may be needed. Verify the actual plan and evidence of implementation. Do not treat a signed annual form as proof that a later changed interest was captured.
A staff member's family participation creates different concerns: confidentiality, voluntariness, assessment objectivity and access to treatment identity. The appropriate decision depends on the circumstances and reviewed safeguards. A monitor should flag the relationship for responsible evaluation rather than secretly reassigning a participant identifier to conceal it.
Ethics committee independence
E6(R3) expects only committee members independent of the investigator and sponsor to vote or provide an opinion. Investigators or sponsor personnel may provide information but should not participate in the decision. Review appropriate evidence of committee composition and procedures without assuming that an institutional colleague is automatically independent in every particular case.
A conflict can also affect an independent monitoring or adjudication function. A DMC's purpose is undermined if members have operational responsibility for the decisions they are evaluating. Its charter and conflict process should support suitable independence and access. Independence is a functional safeguard; it does not mean that qualified experts can never be compensated for legitimate work.
Participant payment is a separate ethical question
Compensation for time and inconvenience and reimbursement of reasonable expenses can support fair access. They should not pressure a person to accept disproportionate risk or remain against their wishes. E6(R3) calls for ethics review of the amount and method; payment should be timely, prorated and not wholly contingent on completion. The information should be disclosed in the participant materials.
| Payment arrangement | Question to examine | Why it matters |
|---|---|---|
| Reimbursement of documented travel | Is the method reasonable and accessible? | Avoid unnecessary financial barriers |
| Visit-based compensation | Are amount and timing reviewed and explained? | Permit fair payment for completed participation |
| Entire payment withheld until final visit | Does withdrawal cause loss of earned payment? | Potential pressure to remain |
| Large additional completion amount | Has the ethics committee evaluated influence and context? | A simple amount alone does not establish acceptability |
| Injury treatment/compensation | What arrangements and information apply? | Distinguish injury protection from participation payment |
A worked payment example
Assume an approved schedule provides 40 currency units for each of five completed visits, paid after each visit, and separately reimburses reasonable documented travel. A participant completes three visits and withdraws. The earned participation amount is 3 × 40 = 120 units, plus applicable travel reimbursement. Staff should not withhold the 120 units until the person agrees to visits four and five. The example illustrates proration, not an official payment rate.
Check what the agreement and approved materials actually say. Sponsor payments to the site and participant compensation are different flows. A delayed sponsor invoice does not automatically justify denying a participant payment owed under the approved arrangement. Resolve operational responsibility through the contract and site process rather than making the participant negotiate the sponsor-site dispute.
Monitoring and documentation
Review relevant disclosure records, approval correspondence, payment schedules, actual communications and reported complaints. Preserve confidentiality for financial and personal information. If a concern affects consent or judgement, assess it with the investigator and sponsor/ethics functions, document the response and verify the agreed safeguard. Do not quietly change a disclosure date or rewrite a payment record to make a late process appear timely.
An exam scenario often tests the distinction between recognising a concern and deciding the remedy. The monitor should identify, document, communicate and verify appropriate management. A conflict does not authorise the CRA to take over clinical judgement, and a recruitment target does not override voluntary participation or independent review.
Official sources
Checked October 18, 2026: ICH E6(R3), Principles and Annex 1, ICH E2A, WMA Declaration of Helsinki, 2024.
An approved schedule pays 40 units per completed visit. A person completes three and withdraws. What earned visit amount follows that schedule?
120 units, without making it conditional on completing two further visits.
Zero because the study was not completed.
200 units only if the person signs a new consent.
40 units because withdrawal cancels earlier visits.
Sections you finish are checked off in the contents.