AUTH/2035/8/07 - Consultant dermatologist v Leo Pharmaceuticals

Promotion of Dovobet

  • Received
    16 August 2007
  • Case number
    AUTH/2035/8/07
  • Applicable Code year
    2008
  • Completed
    12 October 2007
  • Breach Clause(s)
    7.2 (x 2), 7.4 and 9.1
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    No appeal
  • Review
    Published in the November 2007 Review

Case Summary

A consultant dermatologist alleged that a letter from Leo Pharma recommended that most psoriasis patients on Dovonex Ointment (calcipotriol; discontinued) would be appropriately switched to Dovobet Ointment (calcipotriol/betamethasone). This was not the case. These were two distinct treatments, one a potent to very potent topical corticosteroid and the other a non-corticosteroid vitamin D analogue. The complainant alleged that to recommend a direct switch was inappropriate and put patient safety at risk.

By way of background, the complainant made general comments about the relative efficacy and safety of corticosteroid or corticosteroid/vitamin D analogues in psoriasis. In particular the complainant noted that it was important that both prescribers and patients knew that Dovobet contained a potent corticosteroid and were thus alert to possible side effects associated with such therapy. The complainant was suspicious that the 'diminished clinical usefulness' of Dovonex Ointment coincided with the UK patent expiry.

The complainant stated that the main issues were:

• The letter suggested switching from Dovonex to Dovobet Ointment which, especially if carried out by those without particular experience in managing psoriasis could endanger patient safety.

• The UK withdrawal of Dovonex Ointment (but not cream, which was not produced generically), without much notice and without waiting for a generics manufacturer to take over production of an equivalent preparation (and assisting patients in being transferred over to this from Dovonex Ointment), while Leo was promoting Dovobet Ointment might make commercial sense. However, these actions were disappointing; perhaps naively the complainant should have liked to believe the letter's introductory paragraph claiming that the sole purpose of the Leo foundation was to research, develop and market efficacious treatments for the benefit of patients. This approach to promotion brought discredit upon, and reduced confidence in, the pharmaceutical industry.

The Panel noted the complainant's explanation that he had commented on a number of general points by way of background. He did not however make specific allegations about these points. The Panel considered that it had specific allegations about whether the letter implied that patients should be switched from Dovonex Ointment to Dovobet and associated safety issues and the withdrawal of Dovonex.

The letter stated 'because the clinical usefulness of Dovonex Ointment (calcipotriol 50 micrograms/g) has diminished it is no longer supplied by Leo Pharma in the UK. As a result and in response to enquiries we are continuing to receive we would advise that for the majority of your patients, Dovobet (calcipotriol 50 micrograms/g, betamethasone 0.5 milligrams/g) can replace Dovonex Ointment (calcipotriol 50 micrograms/g)'. There followed discussion of Dovobet's efficacy.

There were important differences between the products. Dovobet was indicated for the topical treatment of stable plaque psoriasis whereas Dovonex Ointment was indicated more broadly for the topical treatment of plaque psoriasis. Dovobet had a recommended treatment period of four weeks after which repeated treatment could be initiated under medical supervision; there was no recommended treatment period for Dovonex. Dovobet was not recommended for use in children and adolescents below the age of 18 years whereas Dovonex Ointment could be used with care, and with some restrictions as to maximum weekly dose, in children aged 6 and above. There was limited experience of the use of Dovonex in children under 6 years and a maximum safe dose in that group had not been established. The Dovonex Ointment summary of product characteristics stated that in respect of children clinical experience had shown Dovonex to be safe and effective over eight weeks at a mean dose of 15g per week but with wide variability in dose amongst patients. In addition Dovobet contained a strong, potent topical corticosteroid and had a more extensive list of contraindications and special warnings and precautions for use than Dovonex.

The letter had a broad circulation including hospital and retail pharmacists, practice nurses, prescribing nurses as well as GPs and consultant dermatologists. The Panel considered that by stating that Dovobet could replace Dovonex Ointment for the majority of patients (emphasis added) without making the important differences between the products clear, the letter implied that most patients could be simply switched and that was not necessarily so. There were substantial differences between the products and any switch would have to be conducted with care and on a case by case basis. Dovobet was not recommended for use in patients below the age of 18 years. The reference later in the letter to Dovonex Cream as an option for patients ineligible for treatment with Dovobet did not negate the impression from the preceding paragraphs. The letter was misleading and could not be substantiated in that regard. Breaches of the Code were ruled.

The Panel noted the complainant's allegation thatswitching from Dovonex to Dovobet, if carried out by those without particular experience in managing psoriasis could endanger patient safety and that it was important that prescribers were fully aware that they were using a potent steroid and to be alert to its side effects. The letter referred to 'Dovobet's established and reassuring safety profile'. The Panel noted its ruling above about the impression given by the letter and considered that within the context of a letter which advocated a switch from a non-steroidal treatment to a medicine containing a potent steroid it was important that the material fairly represented Dovobet's risk benefit profile. This was especially important given the wide circulation of the letter in question. The Panel considered that the failure to alert readers to the differing side effect profile of Dovobet versus Dovonex was misleading as alleged; the reference to the prescribing information would not suffice in this regard. A breach of the Code was ruled.

The Panel considered that the failure to make it clear that there were important differences between the products, noting in particular the differences in their side effect profiles, meant that the company had failed to maintain high standards. A breach of the Code was ruled. On balance the Panel did not consider that in this regard the material brought discredit upon or reduced confidence in the pharmaceutical industry.

The Panel noted the complainant's concern about the withdrawal of Dovonex Ointment from UK supply. The Panel noted that whilst discontinuation of products might give rise to concern and disappointment it was nonetheless a legitimate business activity. The Panel considered that the principle of product discontinuation was prima facie outside the scope of the Code. However any reference to product discontinuation within a promotional letter must comply with the Code. The Panel did not consider that the reference to Dovobet's discontinuation within the context of the letter failed to maintain high standards or brought discredit upon or reduced confidence in the pharmaceutical industry as alleged.