AUTH/2126/5/08 - Procter & Gamble v Servier

Misleading and disparaging information about biphosphonates

  • Received
    09 May 2008
  • Case number
    AUTH/2126/5/08
  • Applicable Code year
    2008
  • Completed
    23 September 2008
  • Breach Clause(s)
    7.2 (x3)and 8.1 (x3)
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    Appeal by the respondent
  • Review
    Published in the November 2008 Review

Case Summary

Procter & Gamble alleged that in a letter to prescribing advisors, a press release and and at its sponsored symposium at the British Geriatrics Society (BGS) meeting, Servier Laboratories had issued misleading and disparaging information about bisphosphonates, including Procter & Gamble's product Actonel (risedronate sodium). Servier had inferred that the anti-fracture efficacy of bisphosphonates was attenuated when co-prescribed with acid suppressants. In addition Servier was sharing these misleading messages as part of a broad strategy including communications with official bodies such as the National Institute for Health and Clinical Excellence (NICE).

This was a concerted effort by Servier to disparage oral bisphosphonates so as to influence the prescribing market in its own favour. This was achieved by urging caution when co-prescribing acid suppressants and bisphosphonates due to the increased fracture risk associated with acid suppressants; this was not only misleading but also raised inappropriate concerns about the safety of the oral bisphosphonates. Procter & Gamble alleged that by doing so, Servier brought discredit upon and reduced confidence in the pharmaceutical industry in breach of Clause 2. (Servier supplied Protelos (strontium ranelate) an alternative to bisphosphonates in osteoporosis).

There were limited and contradictory data available (two papers and one abstract) to support the first message conveyed by Servier that '…acid suppressant medication, including proton pump inhibitors (PPIs) has been associated with an increased risk of fracture'; the authors concluded that further studies were needed to confirm and explain the results. In some cases, some of the results were not statistically significant. Use of PPIs was not currently considered an established risk factor for an osteoporotic fracture. In a review of the data upon which Servier based its claims, commissioned by NICE, the final report concluded that the quality of the evidence regarding any possible association between acid suppressants and increased risk of fracture was generally poor and their design appeared to be prone to confounding.

The second message was that epidemiological data, such as that recently presented at the National Osteoporosis Conference, suggested that the anti-fracture efficacy of bisphosphonates was potentially attenuated when co-prescribed with acid suppressants (de Vries et al 2007). Procter & Gamble noted that this analysis, published only as an abstract, was funded by Servier. It was the first and only analysis to have shown this 'association'and the authors suggested that further studies were needed. The review commissioned by NICE concluded that 'No confidence may be placed in the results of the study by de Vries et al because of its failure to demonstrate comparability between exposure groups in terms of key prognostic factors, in particular whether bisphosphonates were prescribed for primary or secondary fracture prevention, and for primary or secondary osteoporosis'. The current summaries of product characteristics (SPCs) for Actonel did not caution against co-prescription of acid suppressants nor was such a potential interaction listed. Data was available for risedronate from a retrospective analysis on a subset of 5,454 patients from three phase-III fracture trials who took either placebo or risedronate (5mg daily) and who were classified as either PPI or H2 antagonist users, or nonusers. This showed that efficacy of risedronate in reducing the risk of new vertebral fractures was not influenced by concomitant PPI and H2 antagonist use (Roux et al 2008).

In conclusion Procter & Gamble believed that the numerous messages communicated by Servier on this topic were not balanced and were misleading. In addition, the inferences made regarding lack of efficacy of bisphosphonates with concomitant PPI use were disparaging.

Procter & Gamble further alleged that the use of misleading claims in a high level promotional campaign which disparaged bisphosphonates as a drug class, brought discredit upon and reduced confidence in the pharmaceutical industry in breach of Clause 2.

The detailed response from Servier is given below.

The Panel noted that when a clinical or scientific issue existed which had not been resolved in favour of one generally accepted viewpoint, particular care must be taken to ensure that the issue was treated in a balanced manner in promotional material.

The Panel noted the data submitted in support of the claims that the use of acid suppressants had been associated with an increased risk of fracture. Yang et al (2006) found a significantly increased risk of hip fracture associated with long-term PPI therapy, particularly high dose PPI. The authors, however, stated that further studies were needed to confirm their findings. Yu et al (2006) concluded that amongst postmenopausal women, use of acid suppressants might (emphasis added) be associated with an increased risk of non-spine fracture. Vestergaard et al (2006) concluded that PPIs appeared to be associated with an increased fracture risk in contrast to H2 antagonists whichseemed to be associated with a decreased fracture risk. The changes in risk estimates were small in all instances and might have limited consequences; further studies were needed. De Vries et al concluded that concomitant use of bisphosphonates and acid suppressants was associated with an increased risk of fracture and that possibly acid suppressants attenuated the protective effects of bisphosphonates on fracture risk. The authors stated that given the frequency of co-prescription of bisphosphonates and acid suppressants, the issue required further investigation.

A critique of the evidence suggesting an association between acid suppressants and increased fracture risk stated that the data was generally poor. In its appraisal consultation document on alendronate, etidronate, risedronate, raloxifene and strontium ranelate for the primary prevention of osteoporotic fragility fractures in postmenopausal women, NICE noted that data indicating that acid suppressants led to a small increase in fracture risk and that co-administration of acid suppressants and bisphosphonates might lead to an increased fracture risk compared with bisphosphonates alone was observational and tentative and different for different fracture sites and different acid suppressants. NICE considered, however, that because various studies showed a trend, caution should be exercised when the coprescribing of acid suppressants and bisphosphonates was being considered. The committee was not persuaded, however that a change to its recommendations, based on the evidence, was necessary. The Panel noted that the NICE document was an appraisal consultation document and was marked confidential. The document stated that it did not constitute the Institute's formal guidance and its recommendations were preliminary and might change after consultation.

The Panel noted that a template letter to prescribing advisors was headed 'Increased risk of fracture associated with use of acid suppressant medication'. The Panel considered that the quality of the data was such that it could not support such a robust, unqualified claim. Although the reader was told that data suggested that the anti-fracture efficacy of bisphosphonates was potentially attenuated when co prescribed with acid suppressants (emphasis added) the Panel nonetheless considered that the letter implied that acid suppressants had been unequivocally proven to attenuate the anti-fracture efficacy of biphosphonates. The letter went on to refer to this growing body of evidence and assessment of the implications of the data, in particular the potential effect on health outcomes and healthcare budgets. It appeared that the data had proven clinical implications and this was not so. In that regard the Panel considered the letter was not balanced and did not reflect the data accurately. A breach of the Code was ruled. The implication that bisphosphonates were less effective if coprescribedwith acid suppressants was disparaging given the current data. Breaches of the Code were ruled and upheld on appeal by Servier.

The press release was headed 'Servier welcomes revised draft NICE guidance'. The third paragraph began 'Servier also welcomes the acknowledgement by NICE in its draft guidance that caution should be exercised when considering the co-prescription of acid suppressants and bisphosphonates'. Readers were also told that NICE had previously failed to address the increased risk of fractures associated with the use of acid suppressants, in particular PPIs, which were commonly co-prescribed with bisphosphonates. The Panel considered that the quality of the data was such that it could not substantiate such robust unqualified claims. The tentative nature of the data acknowledged by NICE, was not referred to in the press release. The Panel considered that the press release was not balanced and did not reflect the data accurately. A breach of the Code was ruled. The Panel also considered that the implication that bisphosphonates were less effective if coprescribed with acid suppressants was disparaging given the current data. Breaches of the Code were ruled and upheld on appeal by Servier.

The Panel noted that Servier's sponsored symposium at the BGS meeting had included a presentation entitled 'Acid Suppressant Medication and Fractures'. The speaker's briefing notes stated that the objective was to communicate on the use of PPIs in osteoporotic patients and the associated risks. Then to give a primary care perspective on how to manage patient cases not covered by NICE guidance. Points to include in the presentation were, inter alia: acid suppressants and increased risk of fracture; attenuation of bisphosphonate efficacy when acid suppressants were coprescribed; how to identify patients at risk of PPIs if prescribed an oral bisphosphonate and the conclusion was to consider prescribing an appropriate agent for these patients – eg strontium ranelate [Servier's product Protelos]. The speaker was further advised that the tone of the presentation should cause delegates to think about their current medical practice and then provide them with a simple solution to the problem.

The final slide of the presentation was headed 'Summary: overview of evidence' and detailed the findings of Yang et al and Vestergaard et al. In the Panel's view the results of the two studies were presented on the slide as if the findings had been unequivocal; the authors' comments as noted above had not been included. There was no transcript of the presentation although the speaker had provided an overview of what he had said. With regard to the last slide the speaker stated that he had said that there might be a reduction in the effect of a bisphosphonate with PPI usage; this needed further study. The Panel considered, however, that the tentative nature of the data was not reflected in the slides and in its view delegates would be left with the impression that acidsuppressants, particularly PPIs, had been unequivocally proven to attenuate the anti-fracture efficacy of bisphosphonates with proven clinical implications. In that regard the Panel considered that the slides were not balanced and did not reflect the data accurately. A breach of the Code was ruled. The implication that bisphosphonates were less effective if co-prescribed with acid suppressants was disparaging given the current data. A breach of the Code was ruled.

The Panel noted its rulings above but nonetheless did not consider that there had been a breach of Clause 2 of the Code which was reserved for use as a sign of particular censure. This ruling was not appealed.

The Appeal Board noted Servier's submission that the slides used at the BGS presentation were not intended to stand alone. The company had emphasised that attendees had not been given copies of the presentation. In the Appeal Board's view, however, a company could not rely on a speaker to qualify or explain otherwise misleading slides and in that regard it was irrelevant as to whether they were given to the attendees.

Servier's sponsored symposium at the BGS was entitled 'Trips, slips and fractured hips'. The title of the speaker's presentation in question was given as 'Global risk management' although the title slide of his presentation read 'Acid Suppressant Medication and Fractures'. The company had specifically briefed the speaker to talk about the potential attenuation of bisphosphonate anti-fracture efficacy when acid suppressants were coprescribed. The Appeal Board was extremely concerned about the speaker's briefing notes. Although the notes correctly cited the title of the talk ('Global risk management') the objective was much narrower and was to talk about the use of PPIs in osteoporotic patients and the associated risks. Then to give a primary care perspective on how to manage patient cases not covered by NICE guidance. Points Servier briefed the speaker to include in the presentation were, inter alia: acid suppressants and increased risk of fracture and attenuation of bisphosphonate efficacy when acid suppressants were co-prescribed. These points echoed Servier's views as expressed in the letter and press release discussed above. The tentative nature of the data was not reflected in the briefing notes. The speaker was further asked to discuss identification of patients at risk of PPIs if prescribed an oral bisphosphonate and the conclusion was to consider prescribing an appropriate agent for these patients – eg strontium ranelate [Servier's product Protelos]. The speaker was further advised that the tone of the presentation should cause delegates to think about their current medical practice and then provide them with a simple solution to the problem. In the Appeal Board's view the briefing notes essentially instructed the speaker to raise concerns amongst the delegates about the coprescription of bisphosphonates and acid suppressants and to get them to considerprescribing Protelos instead of bisphosphonates in at risk patients. In the Appeal Board's view, to include such a direct and promotional call to action in a brief to an independent speaker was wholly unacceptable and gave a very poor reflection of the company's procedures.

The Appeal Board considered that the presentation at the BGS had exaggerated the clinical importance of the data regarding bisphosphonates and acid suppressants. The presentation was not an accurate or balanced reflection of the data in that regard. The Appeal Board upheld the Panel's ruling of a breach of the Code. The Appeal Board also considered that the implication that bisphosphonates were less effective if coprescribed with acid suppressants was disparaging given the existing data. The Appeal Board upheld the Panel's ruling of a breach of the Code.