AUTH/2886/11/16 - Pharmacosmos v Vifor

Promotion of Ferinject

  • Received
    07 November 2016
  • Case number
    AUTH/2886/11/16
  • Applicable Code year
    2016
  • Completed
    22 February 2017
  • No breach Clause(s)
  • Breach Clause(s)
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    No appeal
  • Review
    May 2017 Review

Case Summary

​Pharmacosmos UK complained about a Ferinject (iron carboxymaltose) leavepiece entitled 'Their world awaits' issued by Vifor Pharma UK. Ferinject was an intravenous (IV) iron preparation for the treatment of iron deficiency where oral therapy had been ineffective or could not be used. Pharmacosmos marketed Monofer (iron isomaltoside) which was similarly indicated. 

Pharmacosmos stated that many of its concerns might be reflected in other promotional material. There appeared to be a clear intention to indirectly compare Ferinject and Monofer. The manner of the implied comparison resulted in claims that were alleged to be misleading as outlined below. 

Page 1 of the leavepiece featured a red highlighted box which contained the following claims: 

'Ferinject is the only high dose rapid infusion IV iron that;

• has simplified dosing for all patients

• contains product specific safety data in the Summary of Product Characteristics

• is licenced [sic] for ages 14 years and over 

• can be administered up to 1g as a bolus injection Ferinject is the UK and Europe's market leading IV iron.' 

Pharmacosmos alleged that the layout of the phrase within the red box implied that Ferinject was the only product that could offer any of the points in the bullets, which was not true. A breach of the Code was alleged. By stating that Ferinject was the 'only high dose rapid iron infusion', the unstated but only comparison being made was with Monofer. 

With regard to the claim that Ferinject was the only high dose rapid infusion IV iron that had simplified dosing for all patients, Pharmacosmos stated that there were two ways to calculate iron need based on patient body weight and haemoglobin levels; the Ganzoni formula or a simplified dosing table. Ferinject dose was based on the simplified table exclusively while clinicians could determine the dose of Monofer using either method. The Monofer summary of product characteristics (SPC) recommended but did not mandate the use of the Ganzoni formula in certain patients. Therefore, the Monofer SPC also allowed simplified dosing in all patients, and subsequently the implied comparison was alleged to be inaccurate and misleading in breach of the Code. 

Pharmacosmos further alleged that the claim that Ferinject 'can be administered up to 1g as a bolus injection' was not accurate. The Ferinject SPC stated that 'Ferinject may be administered by intravenous injection using undiluted solution up to 1,000 mg iron (up to a maximum of 15 mg/kg body weight)' (emphasis added). By failing to include the 15mg/kg limit Pharmacosmos alleged that an important safety consideration was omitted, in breach of the Code.

The detailed response from Vifor is given below. 

The Panel agreed with Pharmacosmos that the claims in the red box on page 1 of the leavepiece were an implied comparison with Monofer. By referring to Ferinject as 'the only high dose rapid infusion IV iron' implied that there was at least one other with which to draw a comparison. The claims were not presented simply as 'Ferinject offers etc'. The Panel noted the allegation that the layout of the claims in the red box implied that only Ferinject, unlike Monofer, could offer any of the attributes stated. In that regard the Panel noted that only Ferinject had simplified dosing for all patients; Monofer did not as the Ganzoni formula was recommended in certain patient groups. Only Ferinject was licensed for ages 14 years and over; Monofer could only be given to patients aged 18 years and over. Only Ferinject could be administered (in some circumstances – see below) up to 1g as a bolus injection; bolus injections of Monofer should not exceed 500mg. In the Panel's view, however, Ferinject was not the only high dose rapid infusion IV iron that contained product specific safety data in its SPC as claimed. The statement in the Monofer SPC that due to limited clinical data the side effects stated were primarily (emphasis added) based on the safety data for other parenteral iron solutions, implied that at least some of the safety data in the Monofer SPC was product specific. The Panel thus did not consider that Ferinject was the only product which provided all of the attributes listed in the red box. In that regard the claim in the highlighted red box was not accurate as alleged. A breach of the Code was ruled. 

The Panel noted the allegation that the claim that Ferinject was the only high dose rapid infusion iron that had simplified dosing for all patients was inaccurate and misleading. As referred to above, the Panel noted that Monofer did not have simplified dosing for all patients as the Ganzoni formula was recommended in certain patient groups. The Panel noted Pharmacosmos' comment that the Ganzoni formula was not mandated for particular patients; only recommended. In that regard, however, simplified dosing was not a given for Monofer, prescribers would have to make a clinical decision to ignore the recommendation to use the Ganzoni formula for certain patients. The Panel did not consider that the claim was inaccurate or misleading as alleged. No breach of the Code was ruled.

With regard to the allegations about the claim that Ferinject 'can be administered up to 1g as a bolus injection', the Panel noted that Section 4.2 of the Ferinject SPC stated that a single Ferinject administration should not exceed 15mg iron/ kg body weight (for IV injection) or 20mg iron/kg body weight (for IV infusion), nor should a single administration exceed 1,000mg iron. In that regard, patients with a body weight of less than 66.6kg could not receive a bolus injection of 1,000mg Ferinject. The Panel noted Vifor's submission that page 5 of the leavepiece contained the necessary detail but also noted that the Code required claims to be able to stand alone. In the Panel's view, the unqualified claim at issue implied that every patient could receive 1,000mg Ferinject as a single bolus injection and that was not so. The Panel considered that the claim was not accurate as alleged and it ruled a breach of the Code. The Panel did not consider that the claim was misleading about the side effects of Ferinject and in that regard it ruled no breach of the Code. 

Pharmacosmos noted that page 3 of the leavepiece was headed 'Ferinject vs. oral iron therapy' and featured two graphs adapted from Onken et al (2014). 

According to the simplified dosing in the Ferinject SPC, patients could receive a total dose of 500, 1,000, 1,500 or 2,000mg based on their weight and haemoglobin values. Onken et al, however, had dosed all patients with 2 x 750mg (1,500mg) completely independent and irrespective of the patient's weight and haemoglobin. This was an arbitrary and incorrect method of dosing patients and was not in-line with the licensed Ferinject dosing regimen. Pharmacosmos alleged that the presentation of data from Onken et al was thus in breach of the Code.

The Panel noted that the Ferinject SPC clearly stated that the determination of dose was based upon the patient's weight (below 35kg, 35-<70kg and 70kg and over) and his/her haemoglobin levels (<10g/dL, 10-14g/dL and >14g/dL). A table in the SPC showed the doses which should be given according to which of nine categories a patient fell within. A single dose of Ferinject should not exceed 15mg/kg/body weight for an IV injection and 20mg/kg bodyweight for an IV infusion. The maximum cumulative dose should not exceed 1,000mg of iron (20ml Ferinject) per week). 

The Panel noted, however, that Onken et al administered Ferinject 15mg/kg to a maximum of 750mg on days 0 and 7 regardless of the patient's haemoglobin level. This was not in accordance with the SPC and meant that if a patient in the study weighed 70kg and had a haemoglobin level of ≤9g/dL in Onken et al would administer a total dose of 1,500mg. The SPC stated that for a patient of that weight and haemoglobin level, a total dose of 2,000mg should be given. Similarly if a patient weighed 68kg and had a haemoglobin level of ≥10.1g/dL, Onken et al would still administer Ferinject in two doses of 750mg (1,500mg in total) whereas the SPC gave a dose of only 1,000mg.

The Panel noted that page 5 of the leavepiece stated that the Ferinject dose was calculated according to the patient's weight and current haemoglobin level. Nonetheless, the Panel considered that the use of Onken et al on page 3 promoted a dose of Ferinject which was not in accordance with the SPC. The Panel ruled a breach of the Code. The Panel considered that the leavepiece was misleading in that regard. A breach of the Code was ruled.

Pharmacosmos referred again to page 3 of the leavepiece and the depiction of the Onken et al data discussed above. Pharmacosmos alleged that the only safety data in the leavepiece was in the prescribing information on the final page which was insufficient on this occasion. 

Given that there was clearly an efficacy difference between Ferinject and oral iron demonstrated, it was appropriate and important to highlight that approximately 1 in 4 of the Ferinject study population experienced side effects compared with a much lower proportion of patients experiencing side effects with oral iron. Whilst Pharmacosmos recognised the comments of the authors, which explained the impact of the study run-in period, it was clear that the authors did not believe the study protocol accounted for all of the differences between IV and oral treatment. Given that the front page of the leavepiece drew attention to safety considerations in the SPC, Pharmacosmos believed that the difference in the safety profiles between Ferinject and oral iron in Onken et al should accordingly be highlighted. Pharmacosmos alleged that the absence of the balancing of safety data was in breach of the Code.

The Panel noted the comments above regarding the trial design and how it might have contributed to the relatively low frequency of drug-related treatment-emergent adverse events in the oral iron treatment group (6.3%) vs the Ferinject treatment group (22.8%). The run-in part of the trial had already screened out those patients who could not tolerate oral iron.

 The Panel noted that the authors had stated that the safety profile of Ferinject was generally comparable to that of oral iron. Overall, the Panel did not consider that the leavepiece was misleading as to the relative safety of Ferinject vs oral iron as alleged. No breach of the Code was ruled.

 The Panel noted that there were no claims about the adverse reactions of Ferinject nor was it stated that the medicine had no side effects. Ferinject was not described as safe. No breach of the Code was ruled.