AUTH/2588/3/13 - Media The Drug and Therapeutics Bulletin v Novartis

Promotion of Seebri Breezhaler

  • Received
    18 March 2013
  • Case number
    AUTH/2588/3/13
  • Applicable Code year
    2012
  • Completed
    01 May 2013
  • Breach Clause(s)
    7.2 (x3), 7.4 (x2) and 9.1
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    No appeal
  • Review
    August 2013

Case Summary

​The Drug and Therapeutics Bulletin complained about a booklet entitled 'Evidence Review of Seebri Breezhaler (glycopyrronium bromide)' issued for use in formulary packs by Novartis. Seebri Breezhaler was indicated for use in adults with chronic obstructive pulmonary disease (COPD).

The complainant alleged that page 6 of the Evidence Review contained an unsubstantiated argument for the treatment of COPD exacerbations. Under a sub-heading, 'The importance of reducing exacerbations', the second bullet point stated 'Mortality following hospital admission is higher in patients suffering a COPD exacerbation than those with a myocardial infarction at 12 months [Halpin 2008]. The 180 day mortality rate following a COPD exacerbation is 33% [Anzueto 2010] and therefore reductions in exacerbations can reduce mortality rates'.

The 180 day mortality rate following a COPD exacerbation was not 33%. Anzueto was a review article that highlighted the high mortality rate in patients admitted to hospital with an acute exacerbation of COPD. The paper cited Connors et al (1996) which compared outcomes in a particularly ill group of patients with acute hypercapnic respiratory failure. The Evidence Review did not clarify the group of patients to which this data applied. The complainant alleged that the statement was unhelpful and misleading.

A literature search showed that the conclusion 'and therefore reductions in exacerbations can reduce mortality rates' had not been proven. Mortality rates were higher in frequent exacerbators than infrequent exacerbators but the complainant was unaware of any study that had shown that reducing exacerbations with treatments lowered mortality. Data suggested that tiotropium might be more effective than long-acting beta agonists (Vogelmeier et al 2011)) but even a four year study in which mortality was a secondary endpoint failed to demonstrate a benefit from the use of tiotropium (Tashkin et al 2008).

The impact of glycopyrronium on exacerbations was a secondary endpoint in all the trials cited. Although the Evidence Review clarified primary and secondary endpoints, it presented data for the secondary endpoint first. Given the juxtaposition of the statements on mortality and exacerbations with the secondary endpoint data on exacerbations, readers might apply more weight to the information than was supported by evidence.

The detailed response from Novartis is given below.

The Panel noted that Anzueto reviewed, inter alia, the impact of exacerbations on mortality and notedthat Connors et al reported that in patients admitted to hospital with acute hypercapnic respiratory failure, the 180 day mortality rate was 33%. The complainant stated that this was a particularly ill group of patients and that the 180 day mortality rate was not 33%. The complainant had not stated whether he considered the 180 day mortality rate to be more or less than 33%. The Panel noted that Seneff et al reported that in a group of patients aged 65 years or older admitted to intensive care primarily with an acute exacerbation of COPD, 180 day mortality was 47%. The Panel noted the difference in 180 day mortality rates between the two groups and also that there was no way of comparing the COPD severity of the two groups. Given the difference in the 180 day mortality rate reported in the literature, the Panel considered that the unqualified, unconditional claim 'The 180 day mortality rate following a COPD exacerbation is 33%' was misleading. It implied that the 180 day mortality in any patient following a COPD exacerbation had been categorically proven to be 33% which was not so. Breaches of the Code were ruled.

The Panel noted that the claim, 'and therefore reductions in exacerbations can reduce mortality rates', was not referenced. The Panel did not accept Novartis' submission that the claim was not linked to any specific treatment. Given the data on the facing page about Seebri Breezhaler and exacerbations there was an inference that Seebri Breezhaler would have a positive impact on mortality. The Panel further noted Novartis's submission that no single study had successfully demonstrated that a specific COPD treatment had decreased overall mortality. Halpin reviewed COPD treatment and noted that although the ISOLDE study showed that inhaled fluticasone significantly reduced the rate of exacerbations, a post hoc analysis only showed a non-significant trend towards improved survival (Briggs et al 2006). However, in the TORCH study, although fluticasone reduced the rate of exacerbation, it did not show a reduction in all-cause mortality at 3 years vs placebo (Calverley et al 2007). Halpin also reported that tiotropium had been shown to reduce exacerbation frequency and that a post hoc analysis suggested that it might reduce the rate of decline of FEV1; if this was a real effect then it might have an effect on mortality. Halpin further reported the benefits to COPD patients in preventing exacerbations of adding inhaled corticosteroids to long-acting B2- agonists but the studies cited did not link this benefit to a decrease in mortality. Conversely, other studies which examined the impact of adding inhaled corticosteroids to bronchodilator therapy did not link the reduced risk of death with a reduced rate of exacerbation. Halpin acknowledged that the studies reviewed, with the exception of the TORCH study, were not designed to assess mortality rates – most were underpowered as death was an uncommon event. The Panel noted that the complainant had referred to Tashkin et al and Vogelmeier et al, neither of which had been cited by Halpin. The complainant noted that these studies showed that although tiotropium was possibly more effective than long-acting B2-agonists, in a study that compared time to first exacerbation of COPD, a four year study in which mortality was a secondary endpoint failed to demonstrate a benefit from the use of tiotropium.

Overall, the Panel considered that although the strong claim that 'reductions in exacerbations can reduce mortality rates' appeared to be self-evident, it did not reflect the balance of the data. The claim implied that reducing COPD exacerbations with treatment had been unequivocally shown to reduce mortality rates which was not so. The Panel considered that the claim was misleading as alleged and could not be substantiated. Breaches of the Code were ruled.

The Panel noted that the page facing that considered above was headed 'Glycopyrronium and exacerbations' and featured a table which detailed the secondary outcomes from the GLOW-1 study (glycopyrronium vs placebo) and the GLOW-2 study (glycopyrronium vs tiotropium). In both studies the primary efficacy endpoint was trough FEV1 at 12 weeks. Above the table was an explanation that a secondary objective of the two studies was to explore the first COPD exacerbation with glycopyrronium vs placebo over 26 weeks (GLOW- 1) and 52 weeks (GLOW-2). Exploratory endpoints for GLOW-2 also included measuring the effect of glycopyrronium vs tiotropium in time to first exacerbation. The table, however, had two columns headed 'Endpoint' and 'Result' and so the secondary nature of the endpoints detailed within was not immediately obvious. The Panel considered that the explanation of the endpoints above the table was not prominent and thus was insufficient in this regard. The Panel considered that the presentation of the data was not sufficiently complete to allow the reader to appreciate its statistical significance and the table was misleading in that regard. A breach of the Code was ruled.

Given its rulings above, the Panel ruled a further breach as high standards had not been maintained.