AUTH/3219/6/19 and AUTH/3220/6/19 - Voluntary admission from Otsuka Europe and Otsuka UK

Errors and omissions in prescribing information

  • Received
    25 June 2019
  • Case number
    AUTH/3219/6/19 and AUTH/3220/6/19
  • Applicable Code year
    2019
  • Completed
    03 July 2020
  • No breach Clause(s)
  • Breach Clause(s)
  • Sanctions applied
    Undertaking received
  • Additional sanctions
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  • Appeal
    No appeal

Case Summary

Otsuka Pharmaceuticals Europe Ltd and Otsuka Pharmaceuticals UK Ltd admitted breaches of the Code in that there were errors and omissions in the current prescribing information for Abilify (aripiprazole), Abilify Maintena (aripiprazole), Jinarc (tolvaptan) and Samsca (tolvaptan). Otsuka Europe stated that given the centralised process that it followed, similar errors and omissions were likely to be seen in the prescribing information of the European affiliates and had been seen in the prescribing information used in the UK which was why the voluntary admission was made jointly between Otsuka Europe and Otsuka UK.

As Paragraph 5.6 of the Constitution and Procedure required the Director to treat a voluntary admission as a complaint, the matter was taken up with Otsuka Europe and Otsuka UK.

Otsuka Europe noted that as part of its response to a previous case, Case AUTH/3151/1/19 it committed to reviewing all of the prescribing information issued in 2018/19 to ensure that it was consistent with the relevant summaries of product characteristics (SPCs) and otherwise complied with the of the Code.

The Otsuka Europe medical team led a review of current prescribing information earlier in 2019 and concluded that no immediate revisions were required. A review of the prescribing information, focussing on the current SPCs by an independent consultant commenced in early June 2019. This second review showed a number of discrepancies between the SPCs and the prescribing information for four of the five medicines; among other things some potentially serious events were missing and certain warnings had been omitted. Otsuka Europe was still analysing the significance of the errors and omissions; however, given the nature of this voluntary admission, and Otsuka’s very recent history with inaccurate prescribing information, it considered it important to notify the PMCPA as soon as it became aware as indicated in its response to Cases AUTH/3041/6/18 and AUTH/3042/6/18, historically its prescribing information had not been of an appropriate standard.

Otsuka Europe submitted that these errors and omissions amounted to a breach of the Code in relation to the content of the prescribing information at issue and associated material. In addition, Otsuka had failed to address adequately issues with a process critical to patient safety, in breach of the Code.

Given the issues above highlighted that procedures were still failing to ensure that there was no inconsistency between SPCs and prescribing information, Otsuka acknowledged that this was a breach of the undertakings provided in Cases AUTH/3041/6/18 and AUTH/3042/6/18 by Otsuka Europe and Otsuka UK respectively. This also amounted to a breach of the undertaking provided by Otsuka Europe in Case AUTH/3123/11/18. There had also been breaches of Clause 2 by Otsuka UK and Otsuka Europe.

Correspondence from a concerned group of employees was received; this was not treated as a complaint under the Code but Otsuka was provided with anonymised extracts as its response to the points made would be helpful in considering its voluntary admission.

The detailed response from Otsuka is given below.

The Panel noted Otsuka Europe’s submission that the second review revealed a number of discrepancies between the SPCs and the prescribing information for four of the five medicines; general examples were referred to and a copy of the results were provided. The Panel noted Otsuka Europe’s submission that given its centralised process for prescribing information, similar errors and omissions were likely to be seen in the prescribing information of the European affiliates including Otsuka UK. The Panel noted that there was some internal disagreement regarding the significance of the errors and omissions.

The Panel noted that when it made its voluntary admission, Otsuka was still analysing the significance of the errors and omissions identified by the independent review.

The Panel noted that Otsuka Europe deemed it necessary to withdraw the relevant prescribing information which was available for use on material for between two and eight months depending on the medicine resulting in 33 job bags being withdrawn in Europe and 65 in the UK.

Otsuka had not provided copies of the Jinarc, Abilify, Abilify Maintena and Samsca SPCs so the Panel accessed these on the electronic medicines compendium (eMC) website. The Panel noted that these SPCs had been updated since the voluntary admission had been submitted but upon reviewing the changes outlined on eMC they did not appear to be relevant to the subject of the voluntary admission.

With regard to Jinarc, the Panel noted that the identified errors included the omission of two drug interactions and no date of preparation. The Panel noted that, as acknowledged in the independent review, drug interactions were not specifically required under the Code but, in the Panel’s view, it would be helpful if such precautions were included if they were particularly relevant to the indications being advertised. The Panel did not have any of the advertising materials before it but noted that, in any event, drug interactions were included in the Otsuka UK and Otsuka Europe February 2019 Jinarc prescribing information. The Panel noted that the omission of the date the prescribing information was drawn up or last revised as required under the Code was an error identified in the independent review. The Panel noted, however, that both the Otsuka Europe and Otsuka UK Jinarc prescribing information provided, listed the date of preparation as February 2019. The Panel did not consider that the Jinarc prescribing information provided by Otsuka was in breach of the Code based on the omissions identified in the independent review. The Panel had not seen the associated promotional materials which were also the subject of the admission. On the basis that it was implicit that the prescribing information provided, as part of the voluntary admission, was the same as that on the materials at issue the Panel ruled no breach of the Code.
With regard to Abilify and Abilify Maintena which had a shared prescribing information, the Panel noted that the errors identified by the independent review included: the omission of the serious side effect eye pain; the warning/precaution about increased blood pressure; that the word serious had been incorrectly added in front of ‘uncommon’ and ‘not known’ frequency; and ‘elevated creatinine phosphokinase and rhabdomyolysis have been reported’ was omitted from the warnings section; and whilst it stated ‘not indicated for treatment of dementia-related psychosis’ there was no mention that there was increased mortality in clinical trials in elderly with psychosis associated with Alzheimer’s.

The Panel noted from emails provided by Otsuka that the Europe medical team disagreed with the findings and details were provided.

The Panel noted that the prescribing information in question included the subheadings ‘Not known (cannot be estimated from the available data) serious side effects’ and ‘Uncommon serious side effects’. The Panel did not consider that it was necessarily a breach of the Code to use the word ‘serious’ to designate that those adverse events listed by frequency were serious adverse events that were required to be included in prescribing information under the Code in addition to the common adverse events likely to be encountered.

The Panel noted that both the Otsuka Europe and Otsuka UK May 2019 prescribing information stated in the warnings and precautions section for all formulations ‘Not indicated for treatment of dementia-related psychosis’. In the Panel’s view, this was sufficient such that the additional statement ‘increased mortality in clinical trials in elderly with psychosis associated with Alzheimer’s’ was not required given that the prescribing information made it clear that such use was in any event not indicated.

The Panel noted that eye pain was listed as an uncommon adverse event in the Abilify Maintena SPC accessed by the Panel on eMC on 18 June for prolonged-release suspension for injection and was not included in the list of adverse events in the prescribing information for that formulation. The Panel did not consider that there was evidence before it to show that eye pain was classified as a serious adverse event that was required to be included in the May 2019 Otsuka UK and Otsuka Europe Abilify and Abilify Maintena prescribing information in relation to the prolonged-release solution for injection formulations.

The Panel noted that the May 2019 Otsuka UK and Otsuka Europe Abilify and Abilify Maintena prescribing information stated within the warnings and precautions section for all formulations that they should be used with caution in patients with conditions predisposing to hypertension. The Panel further noted that increased diastolic blood pressure was listed as an uncommon serious side effect for the 7.5mg/ml solution for injection (IM) and hypertension was listed as a serious side effect of unknown frequency for oral formulations and 7.5mg/ml solution for injection and uncommon for prolonged-release solution for injection in both the May 2019 Otsuka Europe and Otsuka UK prescribing information which was consistent with the respective SPCs.

The Panel noted that increased creatinine phosphokinase was listed as a serious side effect of unknown frequency for oral formulations and the 7.5mg/ml solution for injection and of common frequency for prolonged-release suspension for injection in both the Otsuka Europe and Otsuka UK May 2019 prescribing information which was consistent with the respective SPCs.

The Panel noted that both neuroleptic malignant syndrome (NMS) and rhabdomyolysis were listed as a serious side effect of unknown frequency for all formulations (oral formulations, 7.5mg/ml solution for injection and prolonged-release suspension for injection) in both the Otsuka Europe and Otsuka UK May 2019 prescribing information which was consistent with the respective SPCs.

The Panel did not consider that there was evidence that the Otsuka Europe and Otsuka UK May 2019 Abilify and Abilify Maintena prescribing information did not contain the information required by the Code. The Panel did not consider that the Abilify and Abilify Maintena May 2019 prescribing information provided by Otsuka was in breach of the Code based on the matters identified in the independent review. The Panel had not seen the associated promotional materials which were also the subject of the admission. On the basis that it was implicit that the prescribing information provided as part of the voluntary admission was the same as that on the materials at issue, the Panel ruled no breach of the Code.

With regard to Samsca, the Panel noted that the errors identified included that: acute hepatic failure had been omitted from the list of unknown serious adverse events; the warnings section listed ‘permanent neurological sequelae’ when it should provide specific examples of the serious events that could be observed; the warning section stated that Samsca should be interrupted rather than ‘interrupted or discontinued’; and it omitted the term ‘frequency of’ before side effects such that it incorrectly read ‘Not known side effects’; and used > rather than ≥ when defining common and very common frequency of side effects. The Panel noted that the updated Samsca prescribing information had not been provided as it had not yet been approved.

In the Panel’s view, it was clear that ‘not known’ in the December 2018 Otsuka UK and October 2018 Otsuka Europe Samsca prescribing information related to the frequency of the adverse events.

The Panel further noted that it was not necessarily a breach of the Code to refer to ‘permanent neurological sequelae’ rather than list specific examples of such. The Samsca SPC stated ‘Too rapid correction of hyponatremia (increase ≥ 12 mmol/L/24 hours) can cause osmotic demyelination resulting in dysarthria, mutism, dysphagia, lethargy, affective changes, spastic quadriparesis, seizures, coma or death’ whilst both the Otsuka Europe and Otsuka UK prescribing information stated ‘ Too rapid hyponatremia correction can cause permanent neurological sequelae, coma or death.

The Panel did not consider that there was evidence that either the use of ‘not known’ or the reference to ‘permanent neurological sequelae’ constituted a breach of the Code and thus no breach was ruled in relation to both the Otsuka UK and Otsuka Europe prescribing information.

The Panel noted that acute hepatic failure, listed in the Samsca SPC as frequency not known was included in the Otsuka UK Samsca prescribing information dated December 2018 but not in the Otsuka Europe prescribing information dated October 2018. The Panel had not seen the associated promotional materials which were also the subject of the admission. On the basis that it was implicit that the prescribing information provided as part of the voluntary admission was the same as that on the materials at issue the Panel ruled no breach of the Code in relation to the Otsuka UK prescribing information dated December 2018 and a breach of the Code in relation to the Otsuka Europe Samsca prescribing information dated October 2018.

The Panel noted that both the Otsuka Europe and Otsuka UK prescribing information stated ‘Samsca treatment should be interrupted and hypotonic fluid administered if serum sodium increases ≥12 mmol/L within 24 hours or ≥18 mmol/L within 48 hours’ whereas the Samsca SPC accessed by the Panel on the eMC website on 18 June stated ‘In case serum sodium increases ≥ 12 mmol/L within 24 hours or ≥ 18 mmol/L within 48 hours, tolvaptan treatment is to be interrupted or discontinued followed by administration of hypotonic fluid’. The Panel further noted that both the Otsuka UK and Otsuka Europe Samsca prescribing information listed very common as >1/10 and common as >1/100 to < 1/10 which was inconsistent with the SPC which described very common as being ≥ 1/10 and common as ≥ 1/100 to < 1/10. The Panel noted that the Otsuka UK prescribing information dated December 2018 and the Otsuka Europe prescribing information dated October 2018 were not consistent with the Samsca SPC in terms of what should occur when serum sodium increased and the definition of frequency of common and very common adverse events. The Panel noted that it had not seen the associated promotional materials which were also the subject of the admission. On the basis that it was implicit that the prescribing information provided as part of the voluntary admission was the same as that on the materials at issue the Panel ruled a breach of the Code in relation to the Otsuka Europe and Otsuka UK prescribing information and associated materials.

The Panel noted its comments and rulings above in relation to the Samsca prescribing information and considered that both Otsuka Europe and Otsuka UK had failed to maintain high standards; a breach of the Code was ruled.

The Panel considered that such failures brought discredit upon, and reduced confidence in, the pharmaceutical industry. It was crucial that health professionals and others could rely completely upon the industry for up-to-date and accurate information about their medicines particularly information, the omission of which could potentially impact patient safety. A breach of the Code was ruled in relation to both companies.

The Panel noted Otsuka Europe’s submission that the issues above highlighted that the process for implementing changes to SPCs was still failing to ensure that there was no inconsistency between SPCs and prescribing information.

The Panel noted that in Case AUTH/3042/6/18 (Otsuka UK) the Panel ruled a breach of the Code in relation to Jinarc prescribing information which omitted a contraindication and was, therefore, inconsistent with the SPC current at that time, and was not up-to-date and a breach of the Code in relation to five Abilify Maintena materials that Otsuka submitted did not contain the latest version of prescribing information.

The Panel noted that in Case AUTH/3041/6/18 (Otsuka Europe) the Panel ruled breaches of the Code in relation to 7 Jinarc promotional materials issued by Otsuka Europe related to a website that did not contain the latest version of the prescribing information.
In Case AUTH/3123/11/18 Otsuka Europe was ruled in breach of the Code as it had failed to timely and robustly address inadequacies in a critical process (updating prescribing information) that had the potential to impact patient safety.

The Panel noted that in this case in relation to the Samsca prescribing information Otsuka Europe had failed to comply with its undertakings in Cases AUTH/3041/6/18 and AUTH/3123/11/18 and Otsuka UK its undertaking in Case AUTH/3042/6/18. The Panel therefore ruled a breach of the Code in relation to Otsuka UK and two breaches of the Code in relation to Otsuka Europe.

The Panel considered that in failing to identify the issues with the prescribing information prior to the independent review and having prescribing information which was inconsistent with the SPC current at that time, and was not up-to-date on materials available for Samsca for up to eight months meant that both Otsuka Europe and Otsuka UK had failed to maintain high standards and a breach of the Code was ruled.

The Panel noted the importance of undertakings and considered that failure to comply with the undertakings and assurance previously given meant that Otsuka Europe and Otsuka UK had brought discredit upon, and reduced confidence in, the pharmaceutical industry. The Panel thus ruled a breach of the Code.