Non-financial interests, and the conflicts of interest that may result from them, are frequently overlooked in biomedicine. This is partly due to the complex and varied nature of these interests, and the limited evidence available regarding their prevalence and impact on biomedical research and clinical practice. We suggest that there are no meaningful conceptual distinctions, and few practical differences, between financial and non-financial conflicts of interest, and accordingly, that both require careful consideration. Further, a better understanding of the complexities of non-financial conflicts of interest, and their entanglement with financial conflicts of interest, may assist in the development of a more sophisticated approach to all forms of conflicts of interest.
IntroductionThe issue of "conflict of interest" (COI) in biomedicine is an enduring one, characterised by ongoing-and often heated-debates about what "counts" as an interest or conflict of interest, what (if anything) causes a COI, who (if anyone) is to blame; and how (if at all) COIs should be managed. Overwhelmingly, these debates have focused on financial interests and the COIs that may arise from them -as evident in a recent issue of JAMA dedicated to COIs in medicine. Of over 24 articles, only two articles addressed non-financial interests in depth (1, 2) -with one article dismissing non-financial COI, and reiterating the significance of bias arising from financial COI. (1, 2) While several articles acknowledged the presence, (3) and potentially problematic nature of non-financial COI, (1) (4) for the most part, the issue focused on financial COI across different medical settings -including biomedical research, medical education and guideline development. (5, 6) (7, 8) This focus on financial COI reflects the wider discourse within medicine -in which financial COIs are granted primacy, while non-financial COIs are merely acknowledged and dismissed as too complex to warrant further investigation, or alternatively defined out of existence. (2,9)