AUTH/3137/12/18 - ViiV Healthcare v Gilead Sciences

Promotion of Biktarvy (bictegravir, emtricitabine and tenofovir)        

  • Received
    20 December 2018
  • Case number
    AUTH/3137/12/18
  • Applicable Code year
    2016
  • Completed
    18 November 2019
  • No breach Clause(s)
  • Breach Clause(s)
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    Appeal by respondent
  • Review
    To be published in the review

Case Summary

ViiV Healthcare Ltd complained about material used by Gilead Sciences Europe Ltd to promote Biktarvy (bictegravir/emtricitabine/tenofovir) at the HIV Drug Therapy Conference in Glasgow, 28-31 October 2018. Biktarvy was used in the treatment of adults infected with human immunodeficiency virus-1 (HIV-1). ViiV promoted, inter alia, Juluca (dolutegravir (DTG)/rilpivirine) for the treatment of HIV-1 infection in adults.

ViiV stated that its complaint related to a stand panel and videos (original and revised) that appeared on the stand.

The case preparation manager decided that inter-company dialogue on the original video was successful and therefore that complaint did not proceed. The matter in relation to the revised video did proceed.

The detailed response from Gilead is set out below.

Gilead explained that four different items appeared on the stand including two static image stand panels (BIK\IHQ\18-09\\1177b and BIK\IHQ\18-09\\1177c), the revised video (BIK\IHQ\18-09\\1177a(1)) which was shown as three separate videos looping simultaneously in different areas of the stand and another standalone looping video (BIK\IHQ\18-09\\1177d).

Gilead requested that the Authority considered the complaint in the context of all claims and imagery available on all four separate items.

1 Claim ‘Better tolerated than DTG-containing regimens’

This claim was prominently displayed on the stand panel and as part of the revised video. The claim was accompanied by a dagger symbol which referred the reader to the statement ‘Significantly fewer all grade treatment-related AEs [adverse events] compared to DTG plus ABC/3TC [abacavir/lamivudine] or FTC/TAF [emtricitabine/ tenofovir alafenamide] (secondary endpoint)’.

ViiV alleged that the claim was not fair or balanced and was misleading. The claim overstated the differences in tolerability profiles comparing Biktarvy with dolutegravir (DTG)-containing regimens. The footnote, in smaller print below the claim, only referred to all-grade treatment-related adverse events from the treatment naïve studies GS-1489 (Gallant et al 2017) and GS-1490 (Sax et al 2017), and did not refer to the full tolerability profile of the study comparators in those treatment-naïve studies or refer to study GS-1844 (Molina et al 2018). Detailed review of all of the tolerability and safety sections of these studies led to the conclusion that the overall tolerability and safety profiles of these regimens were similar.

ViiV alleged that the deliberate use of highly selected data from a larger dataset to qualify, as a footnote to a much broader unsubstantiated claim were breaches of the Code including not maintaining high standards. Tolerability was the ability to tolerate a medicine and was not defined by the single parameter of all grade adverse events. It was more usually assessed by other measures such as the rate of drug-related discontinuations and/or more severe adverse events.

The Panel noted that the claim ‘Better tolerated than DTG-containing regimens’ which appeared on the stand panel (BIK\IHQ\18-09\\1177b) and in the revised video (BIK\IHQ\18-09\\1177a(1)) specifically referred to by ViiV was referenced to Gilead Data on File, Gallant et al, Sax et al, and contrary to ViiV’s submission, Molina et al. In both materials, directly above the claim, it stated ‘In Phase 3 clinical trials’ and directly below the claim was the statement ‘Significantly fewer all grade treatment-related AEs compared to DTG plus ABC/3TC or FTC/TAF (secondary endpoint)’. The Panel noted that although the statement appeared within the same visual field as the claim, it was in much smaller, less prominent font than the claim ‘Better tolerated than DTG-containing regimens’.

The Panel noted that although the statement appeared to reflect the information in studies GS-1489, GS1490 and GS1844 with regard to all-grade treatment-related adverse events, it did not reflect the results with regards to the other factors within these studies which might contribute to the tolerability profiles of the medicines or the overall conclusions of the studies with regard to tolerability. The Panel considered that the immediate impression of the claim ‘Better tolerated than DTG-containing regimens’ to readers, would be that Biktarvy was better tolerated than all DTG-containing regimens which was misleading and could not be substantiated by the referenced studies and the statement immediately beneath did not negate this misleading impression. Further, in the Panel’s view, better tolerability might imply statistically significant differences in measures other than all grade treatment-related adverse events eg rates of discontinuation. In this regard, the Panel noted Gilead’s submission that the rates of discontinuation between the treatment groups in GS-1489, GS-1490 and GS-1844 were not statistically significantly different. The Panel considered therefore that the claim ‘Better tolerated than DTG-containing regimens’ was misleading, exaggerated Biktarvy’s properties, was not capable of substantiation and was not qualified by the statement that followed. Breaches of the Code were ruled including that high standards had not been maintained. These rulings were upheld on appeal from Gilead.

2 Use of imagery showing a rose which had shed many of its thorns

This imagery described by ViiV appeared on the stand panel (ref BIK\IHQ\18-09\\1177c) which was not specifically referred to by ViiV and only the image of a rose head appeared in the revised video referred to by ViiV (BIK\IHQ\18-09\\1177a(1)).

The stand panel included an image of a rose which had shed a number of thorns which lay beside it. Above it stated ‘The beauty of what is possible’ followed by ‘Biktarvy (BIC/FTC/TAF) combines bictegravir – a novel INSTI – with DESCOVY▼ (FTC/TAF), a durable guideline-preferred dual-NRTI backbone’.

The revised video contained a number of claims including the claim at Point 1.

ViiV alleged that the depiction of a rose with most of its thorns shed, immediately after the contested claim suggested an overstated tolerability and safety profile improvement with Biktarvy compared with DTG-containing therapy. This could not be substantiated by the body of evidence from the studies as outlined above. The imagery implied that Biktarvy was ‘safe’ or ‘safer’. ViiV alleged that the use of the words ‘safe’ and ‘safer’ were in breach of the Code.

ViiV alleged that associations between the rose, loss of thorns and the claim appeared throughout the booth and were clearly meant to imply that Biktarvy had a superior tolerability profile (dropping of thorns) and that DTG-containing regimens might cause pain or harm to HIV patients. ViiV alleged that if the campaign misrepresented safety and disparaged a competitor then it also brought the industry into disrepute.

In the Panel’s view, on the balance of probabilities, most readers would associate the picture of the rose as representing Biktarvy. The Panel considered that thorns on a rose stem would be seen as something injurious rather than representing different attributes as described by Gilead; the imagery implied that Biktarvy might cause less injury in comparison with a ‘rose’ with more thorns. The Panel considered that within the context of the stand, it appeared that Biktarvy was being compared to DTG-containing regimens as acknowledged by Gilead.

The Panel noted that although only the rose head appeared throughout the revised video, the video was displayed within the context of the stand and, in the Panel’s view, visitors to the stand would make a connection between the rose with thorns beside it on the stand panel and the rose head in the revised video. The Panel noted that the revised video was made up of three separate videos looping simultaneously in different areas of the stand.

The Panel noted that within the three video loops, an image of the rose head appeared directly before and/or directly after the following claims, which all included the caveat ‘In Phase 3 clinical trials’: Better tolerated than DTG-containing regimens; Small STR with flexible daily dosing; >90% efficacy and 0 resistance. In the Panel’s view, ViiV had not established that the flower head image within the three video loops was a hanging comparison as alleged and therefore no breach was ruled in that regard.

The Panel considered, on the balance of probabilities, that visitors to the stand would associate the image of the rose head in the videos appearing before and after the claims including ‘Better tolerated than DTG-containing regimens’ with the image of the rose with some dropped thorns on the stand panel. The Panel considered, therefore, that the video, by association with the imagery and claim on the stand panel and the claim ‘Better tolerated than DTG-containing regimens’ within the video loops, implied that Biktarvy was less hazardous than DTG-containing regimens and it considered that this implication could not be substantiated and disparaged DTG-containing regimens. Breaches of the Code were ruled. These rulings were upheld on appeal by Gilead.

The Panel did not consider that the rose head depicted in the video implied that Biktarvy was safe as alleged; no breach was ruled.

The Panel ruled a breach as Gilead had failed to maintain high standards. This ruling was upheld on appeal from Gilead.

On balance, the Panel did not consider that the circumstances warranted a ruling of a breach of Clause 2 which was used as a sign of particular censure and reserved for such use.

3 Claim ‘The beauty of what is possible … Biktarvy … is now a reality’

This claim appeared within the revised video (ref BIK\IHQ\18-09\\1177a(1)) specifically referred to by ViiV.

ViiV alleged that the claim could not be substantiated; it promised a brighter future, even a utopian state of antiretroviral treatment beyond what other regimens delivered. At best, this was ambiguous and at worst it overstated the benefits of Biktarvy.

The Panel noted Gilead’s submission that the claim at issue was meant to introduce the subsequent claims (>90% efficacy and 0 resistance (Non-inferior vs comparator in all registrational studies), better tolerated than DTG-containing regimens (significantly fewer all grade treatment-related AEs compared to DTG plus ABC/3TC or F/TAF) and small, single tablet regimen with flexible daily dosing), and add to this that Biktarvy was now available.

The Panel considered that the claim ‘The beauty of what is possible … Biktarvy … is now a reality’ when considered in isolation was not necessarily unreasonable. However, the context of the claim within the material and in relation to all the materials on the stand was relevant. The Panel noted its comments and rulings above at Points 1 and 2 and considered that they were relevant here. The Panel considered that linking the claim ‘The beauty of what is possible … Biktarvy … is now a reality’ in the video (ref BIK\IHQ\18-09\\1177a(1)) which also included the claim ‘Better tolerated than DTG-containing regimens’ and the rose imagery was misleading and exaggerated the properties of Biktarvy. The Panel therefore ruled breaches of the Code. These rulings were upheld on appeal by Gilead.