Index > Vol. 86/2006 > Iss. 6/November > pp. 485-497 > Full Text

Conflicts of Interest in Dermatology1

Hywel C. Williams, Luigi Naldi, Carle Paul, Anders Vahlquist, Sara Schroter and Ray Jobling

Abstract:
Conflicts of interest exist in dermatology when professional judgement concerning a primary interest, such as research validity, may be influenced by a secondary interest, such as financial gain from a for-profit organization. Conflict of interest is a condition and not a behaviour, although there is clear evidence that gifts influence behaviour. Little has been written about conflicts of interest in dermatology. This series of papers raises awareness of the subject by exploring it in greater depth from the perspective of a dermatology researcher, an industry researcher, a dermatology journal editor, a health services researcher and a patient representative. Collectively, they illustrate the many ways in which conflicts can pervade the world of dermatology publications and patient support group activities.

Key words: conflicts of interest; dermatology; disease mongering; disease awareness campaigns; ghost authorship.

Acta Derm Venereol 2006; 86: 485-497.

1. Definitions and scope of this article

Hywel Williams

Where did it all come from?

The basis of this article arose from a workshop led by the European Dermato-Epidemiology Network (EDEN) on the topic of conflict of interest (COI) in dermatology held at the Spring 2006 European Academy of Dermato-Venereology meeting in Finland. It might strike the reader that the topic of COI was an odd one for a meeting that relies so heavily on sponsorship from the pharmaceutical industry. Nevertheless, the session was well attended and received by a wide range of colleagues from academia, clinical practice and industry. It was clear from the discussion that ensued from the potentially difficult areas surrounding COI in dermatology, that some themes relating to COI and dermatology research output needed to be shared more widely amongst the dermatology community through a journal article. This article therefore represents a compilation of those talks, plus an additional contribution about COI and patient support groups from Ray Jobling, who has psoriasis and who has worked with patient support groups for many years.

The compilation is not intended to be a comprehensive or systematic review of the extent and effects of COI in dermatology. Instead, the article aims to raise awareness of the existence of COI in dermatology, as the topic appears to be very rarely, if ever, mentioned at dermatology meetings. Even in the dermatological literature, I could find only eight relevant publications when searching PubMed using the terms {“conflict” AND “dermatology”} as of 29th August 2006 (1-8). Indeed, I might even go so far as to suggest that COI is a taboo subject in dermatology - possibly because nobody wants to upset, what may seem to some, a cosy relationship.

The article simply makes some points about the topic of COI from a variety of perspectives. Many of the examples developed refer to psoriasis, which is perhaps unsurprising given the current substantial resources being put into launching a new range of interesting, but also very expensive, new biological treatments for this disease. Luigi Naldi, a dermato-epidemiologist from Italy, begins by lamenting the demise of curiosity-driven as opposed to financially-driven research. He then develops examples of COI from the EDEN psoriasis survey, opening our eyes to some of the subtle ways in which drugs can be promoted favourably. Carle Paul, a dermatologist with many years of experience in the pharmaceutical industry, elaborates on the importance of full disclosure and how COI is not just an industry problem. He talks about selective publication and the dangers of Bodenheimer’s “non-writing author/non-author writing syndrome”, as well as ways of reducing such behaviour in the future. Anders Vahlquist, editor of this journal, shares his concerns about COI and comments on the extent to which dermatology journal editors can and should attempt to tackle the problem. The question remains as to whether all this concern and intrigue makes any difference to you as the reader? Sara Schroter from the British Medical Journal presents two key randomized controlled trials that show that the presence and type of COI as well as the type of article in which it is contained, makes a profound difference on the validity that readers place on that article. Finally, Ray Jobling talks from the perspective of patient support groups who are often desperate for funding. He points out how such groups sometimes have to wrestle in an unequal partnership with big pharmaceutical companies, who may view such groups as excellent vehicles for disease awareness campaigns and as legitimate substrates for disease mongering.

Although the article raises some uncomfortable revelations at times, its overall tenor is one of raising awareness of an issue that faces dermatologists on an almost daily basis. All contributors have been encouraged to look to the future for developing solutions and for getting the balance right.

What is a conflict of interest?

It is important to start by defining the theme on which this article is based. Many definitions of COI exist, but there is reasonable similarity between those used on medical journal websites. I like the definition suggested by the British Medical Journal (9): “A competing interest exists when professional judgement concerning a primary interest (such as patients’ welfare or the validity of research) may be influenced by a secondary interest (such as financial gain or personal rivalry)”. They later qualify the definition by restricting requests for competing interests to financial ones, based on their experience that authors often do not disclose them.

Two important points emerge from this definition. The first is that COI is a condition and not necessarily a behaviour. It may be said for instance, that dogs generally chase cats, yet there are plenty of examples of the two living together in harmony (Fig. 1). Merely being a dog does not necessarily mean that a type of behaviour (chasing cats) has occurred - it simply means that on average a dog will chase (behaviour) a cat because of the condition of “being a dog”. In other words, COI is a set of circumstances, interests or conditions that place the affected person in a position of potentially being influenced by those circumstances. It does not mean, for example, that if I was paid to fly to Mauritius and was lavishly entertained there in order to give a talk about the new biologicals for psoriasis, that I would necessarily give a talk that portrayed these new treatments in a positive light. Sometimes, people with conflicts deliberately overcompensate for potentially biased behaviour - for example, the teacher who happens to have his own son in his class might give his son an extra hard time in order to avoid accusations of favouritism. The second point to note is that the degree to which behaviour has been influenced in relation to the declared conflict can only be judged by those in the audience. It is not for me, for example, to rationalize internally that the trip to Mauritius would not influence my portrayal of a new drug developed by those who have looked after me so well - the process requires me first to declare all possible conflicts at the start of any talk and then allow the audience to make a judgement about whether my subsequent behaviour was influenced by those conflicts. We can rationalize as much as we like that we are all above the financial or other temptations arising from conflicts, but conflicts are conflicts. Declaring them does not necessarily imply that you are “behaving badly”, but they are a set of conditions that are known profoundly to affect human behaviour, and as such they must be declared (10-13).

A final point that needs to be emphasized is that COI is not just concerned with a polarized debate about clinicians and the pharmaceutical industry. As Carle Paul later comments, COI can arise from the need to publish for the advancement of careers. Human characteristics such as jealousy, arrogance and favouritism can pervade processes such as peer review, especially if these are done anonymously. So COI is all around us - the key is to declare it if in doubt and let others decide if it is important. As Wazana’s systematic review shows, there is now overwhelming evidence that seemingly trivial conflicts, such as receiving gifts, affect prescribing behaviour (13). I suspect that this article will confirm the suspicions of many readers, surprise others, and even anger some who might have a lot on their conscience, but I hope that, most of all, it will stimulate colleagues to think more about COI in the field of dermatology and to ensure that checks are in place to keep the balance at the right level.

2. More on conflicts of interest in dermatology

Luigi Naldi

Economic rather than curiosity-driven research

“The most important scientific development of the 20th century is that economic interests have replaced curiosity as a driving force of research activities.” This statement from the Nobel Prize winner Kary Mullis, underlines a central issue when discussing conflict of interest (COI) in medicine: a shift in research support from that provided by independent sources to that provided by the pharmaceutical industry (14). The influence of the pharmaceutical industry on medical research has increased enormously in the last decades. This has been paralleled by heavy marketing competition. Alarms have been raised repeatedly concerning the consequences of the critical dependence of clinical research on economic interests. Marcia Angell, former editor of the New England Journal of Medicine, was concerned about the industry becoming “primarily a marketing machine” and co-opting “every institution that might stand in its way” (15). Richard Horton, editor of the Lancet, outlined how journals ”devolved into information laundering operations for the pharmaceutical industry” (16). Jerry Kassirer, another former editor of the New England Journal of Medicine, argued that the industry has deflected the moral compasses of many physicians (17). There is a cycle of dependency between physicians, academic opinion leaders, patient’s organizations, researchers, and industrial interests (18).

Dermatology does not appear to be an exception

As indicated by the European Dermato-Epidemiology Network (EDEN) psoriasis project, only a quarter of all randomized clinical trials published on psoriasis from 1977 to 2000 have been conducted independently from direct pharmaceutical company sponsorship, and the proportion of sponsored trials is increasing dramatically in more recent years (19). Randomized clinical trials are considered one of the highest forms of evidence. A large trial published in a major journal has the journal’s stamp of approval (unlike advertising material), will be distributed around the world and may well receive global media coverage. For a drug company, a favourable trial published in a good journal is worth thousands of pages of advertising (Fig. 2). Quite remarkably, sponsored trials rarely produce results that are unfavourable to the companies’ products. There is evidence from systematic reviews that published studies funded by pharmaceutical companies are several times more likely to show results favourable to the company than studies funded from other sources (20, 21). Not surprisingly, data from the EDEN psoriasis project showed that the large majority of sponsored trials provided positive results.

There are several ways to obtain the data you want from clinical research. Table I presents some examples (18). Placebo-controlled randomized trials, the use of surrogate outcome measures over a short period of time, rather than clinically relevant outcomes over a significant time-span, and duplicate publications, are all means of enhancing spin on a product, as evidenced in the EDEN psoriasis project. These factors may combine with selective reporting (22). In spite of the enthusiasm demonstrated by opinion leaders and the public, the development of new biological agents for psoriasis is no exception to this situation (23). To date, no long-term randomized trials that include active comparators are available on these drugs. On the other hand, promotional strategies for new biological agents in psoriasis offer additional teaching examples of the different modalities adopted to expand the market for new drugs using scientific data and statements by opinion leaders in sponsored symposia. Patient organizations in sponsored campaigns are also used to disseminate information on psoriasis management. The establishment of a new “World Psoriasis Day”, originally sustained by a pharmaceutical company (Serono), is just one example (24).

Understanding drug promotion

In Italy, recognition of the problems involved with new drug registration and lack of data on effectiveness and safety in situations where alternative conventional treatments are already available, have prompted the initiation by the Italian Drug Agency (AIFA) of post-marketing surveillance programmes closely linking prescription to the provision of patient data at first drug prescription and on a regular basis subsequently during a pre-defined follow-up period. One example of such a programme on psoriasis is the Psocare programme (25). All the patients receiving a new systemic treatment for psoriasis for the first time (including the new biological agents) at a number of reference psoriasis centres are registered and followed up within the programme. During the first eight months of activity (as of 4th August 2006) 4302 patients were entered in the programme. Interestingly, a number of initiatives sponsored by pharmaceutical companies in connection with Italian scientific dermatological societies and the patient organizations, were started in Italy in an obvious attempt to use the Psocare programme as a marketing opportunity, illustrating the pervasive nature of marketing interests in medical activities. In a typical case, an initiative consisted of a drug-sponsored symposium with a presentation of the Psocare system and data, followed by several presentations of efficacy and safety data concerning the new biological agents, and only passing mention of older established conventional therapies. In many instances, the label “Psocare” was used in the context of these sponsored symposia without the permission or agreement of AIFA.

The industry perspective on drug promotion is better understood by reading a document such as the one produced by the European Federation of Pharmaceutical Companies. The document as reported by Liberati et al. (26) identifies 20 diseases and conditions, such as dementia, asthma, hepatitis C, rheumatoid arthritis and osteoporosis, where “potentially achievable benefits are not achieved because patients are denied access to important therapeutic interventions due to poor diagnosis, limited patient awareness of effective drugs, and strict cost containment by healthcare systems”. Selectivity of reporting is the main theme to emerge from the document. In the section on Alzheimer’s disease, for example, second generation acetyl cholinesterase agents are reported as increasing quality of life, with massive economic benefits for society. Only one reference (in German) is quoted, while systematic reviews pointing to inadequate follow-up and questionable end-points are omitted. One of the reasons why new drugs are registered despite a lack of firm evidence concerning their actual role in the disease for which they are developed, is the limited role played by regulatory agencies (27). It should be noted that the European Agency for the Evaluation of Medical Products (EMEA) is part of the Directorate for Enterprise and Industry and not Public Health, suggesting a possible COI in the regulatory process itself.

3. An industry researcher’s per­spec­tive

Carle Paul

Research studies in biomedical journals are under intense scrutiny because of proven examples of misleading reports of research findings from both industry-sponsored and academic research. Various types of conflict of interest (COI) exist for both authors and reviewers: publications play a role in career advancement, both in academia and in the pharmaceutical industry, leading potentially to financial gains. Enhanced reputation and media attention are associated with publications in reputable journals. The most obvious types of COI in industry-sponsored research are financial. Financial COI between clinical investigators and the pharmaceutical industry has been associated with a risk of under-reporting unfavourable study conclusions and with bias in reporting positive study results. One study from the field of dermatology showed that industry sponsorship was significantly associated with higher likelihood of reporting positive results, higher methodological quality and larger clinical trials (3).

Disclosure of potential conflicts of interest

The prerequisite in evaluating the role of a potential financial COI on how research results are reported is full disclosure of potential COI. Both authors and reviewers of biomedical journals should fully disclose potential COI. Although the presence of a potential COI does not imply that the research is of lower quality, it represents important information for the reader. Studies have shown that full disclosure of potential conflicts is rarely the rule (28). For the reader, identification of potential COI is not easy if undisclosed. To illustrate this point, I have taken the example of a recent paper describing a potential risk of skin cancer with calcineurin inhibitors based on in vitro findings suggesting a reduction in DNA repair after ultraviolet (UV) radiation in keratinocytes exposed to these agents (29). No COI are disclosed in this work, which was also presented publicly at a Pediatric Advisory Committee of the Food and Drug Administration (30). However, a visit to the website of the company sponsoring the research and from which the authors are employees provides interesting results. The research sponsor is a bio-pharmaceutical company that develops and markets topical prescription and over-the-counter drugs in the field of DNA skin repair and photobiology (31). Among these is a “skin-cancer repair lotion” containing a DNA repair enzyme that is supposed to counterbalance the negative effect of UV radiation. Does this financial interest represent a true COI? The fact that the manufacturer of a DNA repair product may gain advantage from potential DNA damage properties of a drug cannot be denied. As Williams emphasizes in the introduction of the present paper, the readers should be given the opportunity to make their own judgements on the relevance of such a potential COI. This can only happen when the information is made available during the peer review process as well as in the publication.

Authorship, responsibility and conflicts of interests

Originally, clinical research was performed predominantly by academic researchers with little or no support from the pharmaceutical industry. Since 1970, however, a dramatic increase in research funding from the pharmaceutical industry has occurred. Clinical research teams in the pharmaceutical sector comprise physicians specialized in clinical research, clinical scientists, methodologists and statisticians, the structure of which frequently mirrors the organization of a large academic centre. Most multicentre therapeutic studies are now the result of collaborations between researchers from the pharmaceutical industry (usually referred to as “the industry” in the medical literature) and clinical investigators (usually referred to as academic researchers or investigators). In many papers, both industry researchers and academic investigators meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship (32), having made a significant contribution to study design, analysis, interpretation of results and manuscript writing. Concerns have been made recently in writing and many times orally to me that industry researchers have an increased risk of introducing bias because of vested interests in the drug studied (33). Having spent eight years in the pharmaceutical industry and about the same amount of time in academic research, I have not seen major differences in the scientific behaviour and the desire to conduct good research between representatives from each sector. Bias does exist both in academia and in the pharmaceutical industry, as people become emotionally attached to the hypothesis they formulate. Confrontations of opinions during the writing process enrich the scientific debate and the discussion section of manuscripts.

Industry researchers should continue to co-author publications of their research and take ownership and responsibility for the scientific content of manuscripts. Excluding industry researchers from authoring publications would not be ethical if they meet authorship criteria. In addition, promoting scientific McCarthysm could enhance ghost-writing, carrying the risk of further disconnecting authorship from responsibility.

One traditional way to make up COI is what has been called the “non-writing author/non-author writing syndrome” (34). This syndrome has two main characteristics: an employee of a drug company or a professional medical writer, who will not appear as a named author, writes the manuscript of a scientific publication based on material provided by the company. The non-writing author, who is usually a well-known expert in the field (“a busy key opinion leader”), is offered authorship of the paper. This non-writing author is supposed to lend an air of scientific credibility to the work. Although medical writing support may be useful to edit manuscripts originally written by non-professional writers, full ghost-writing poses several problems: first it may be used to mask or to undermine COI, secondly, it may promote disconnection of authorship from responsibility. When the manuscript is entirely written by a “non-author writer”, two patterns emerge in practice (Table II): some non-writing authors may be tempted not to check scrupulously the work against the original data. Alternatively, some non-writing authors read the manuscript carefully and make important contributions to the content. It is the responsibility of the authors to be guarantors of the data presented, and when the manuscript has been written by somebody else it is a real challenge to take full responsibility for the results and to control the way they are presented.

Although the industry has been made entirely responsible for the “non-writing author/non-author writing syndrome”, researchers outside the medical field have expressed different opinions: Trudo Lemens, from the Faculty of Law of Toronto, has suggested that medical researchers are accustomed to operating in a culture where authorship is not strictly determined on the basis of true contribution, making the acceptance of ghost-writing easier: “the line between adding one’s name to an article written by a junior researcher and adding one’s name to an article prepared by a medical writers’ bureau seems narrow” (35).

Manuscript content versus original research

A manuscript is usually a selection of data from a prospectively planned research project that was supported by a protocol, a statistical analysis plan and a set of results (statistical tables, listings and a study report). Data selection for manuscript preparation is a very sensitive process which is prone to major bias, especially when the results do not meet expectations. For example, the temptation may sometimes be high to overemphasize a “positive” exploratory analysis at the expense of a “negative” primary end-point. Unfortunately, most often reviewers and readers do not have access to the original study material and, as a result, they may ignore the data selection process. Even authors did not have access to the original data in the past in some instances. It is surprising to realize that sometimes the data presented in a scientific publication are different from the data presented in the original report. To illustrate this point, I have taken the example of a recently published clinical trial on a biological agent in psoriasis (36). Table III shows, in the right-hand column, the original data as presented to the Food and Drugs Administration and publicly available on the US drug label (37). Data from the same study as disclosed in the manuscript are presented in the left-hand column. It is striking to realize that there are major differences between the two sets of data. This suggests that the study was published without disclosing the results for the prospectively planned primary end-point.

Suggestions on how to better ensure reporting of clinical trials and scientific research

Following the recommendations from the ICMJE and other researchers, significant efforts have been made by drug companies concerning prospective registration of drug trials and commitments to publish study results. The focus should now be on ensuring accurate publication of study results.

A system of checks and balances is required to ensure transparency both for “industry-sponsored” and “academic medical” research. Suggested principles to minimize the impact of financial COI on how study results are reported include: