Public Assessment Report Decentralised Procedure …

1 Public Assessment Report Decentralised Procedure CLOBAVATE W/W OINTMENT (Clobetasone butyrate) Procedure No: UK/H/3212/001/DC UK Licence No: PL 17507/0118 AUDEN MCKENZIE (PHARMA DIVISION) LTD PAR Clobavate w/w Ointment UK/H/3212/001/DC 2 LAY SUMMARY On 17 December 2012, Ireland and the UK agreed to grant a Marketing Authorisation to Auden Mckenzie (Pharma Division) Ltd for the medicinal product Clobavate w/w Ointment (PL 17507/0118; UK/H/3212/001/DC). The licence was granted via the Decentralised Procedure (DCP), with the UK as Reference Member State (RMS). After a subsequent national phase, a Marketing Authorisation was granted in the UK on 18 January 2013. This is a prescription-only medicine (POM). Clobavate w/w Ointment contains the active ingredient clobetasone butyrate which belongs to a group of medicines called steroids. It helps to reduce swelling and irritation. Clobavate w/w Ointment is used to help reduce the redness and itchiness of certain skin problems.

2 It is used for mild skin problems or to keep your skin problems under control. These skin problems include eczema, dermatitis or insect bites. It is also used to help reduce inflammation in the outer ear. No new or unexpected safety concerns arose from this application and it was, therefore, judged that the benefits of using Clobavate w/w Ointment outweigh the risks, hence a Marketing Authorisation has been granted. PAR Clobavate w/w Ointment UK/H/3212/001/DC 3 TABLE OF CONTENTS Module 1: Information about initial Procedure Page 4 Module 2: Summary of Product Characteristics Page 5 Module 3: Patient Information Leaflet Page 6 Module 4: Labelling Page 7 Module 5: Scientific Discussion Page 9 1 Introduction 2 Quality aspects 3 Non-clinical aspects 4 Clinical aspects 5 Overall conclusions Module 6 Steps taken after initial Procedure Page 21 PAR Clobavate w/w Ointment UK/H/3212/001/DC 4 Module 1 Product Name Clobavate w/w Ointment Type of Application Hybrid, Article Active Substances Clobetasone butyrate Form Ointment Strength w/w MA Holder Auden Mckenzie (Pharma Division) Ltd McKenzie House Bury Street Ruislip Middlesex HA4 7TL UK Reference Member State (RMS)

3 UK CMS Ireland Procedure Number UK/H/3212/001/DC Timetable Day 204 17 December 2012 PAR Clobavate w/w Ointment UK/H/3212/001/DC 5 Module 2 Summary of Product Characteristics In accordance with Directive 2010/84/EU the Summaries of Product Characteristics (SmPC) and Patient Information Leaflets (PIL) for products granted Marketing Authorisations at a national level are available on the MHRA website. PAR Clobavate w/w Ointment UK/H/3212/001/DC 6 Module 3 Patient information Leaflet In accordance with Directive 2010/84/EU the Summaries of Product Characteristics (SmPC) and Patient Information Leaflets (PIL) for products granted Marketing Authorisations at a national level are available on the MHRA website. PAR Clobavate w/w Ointment UK/H/3212/001/DC 7 Module 4 Labelling CARTON: TUBE: PAR Clobavate w/w Ointment UK/H/3212/001/DC 8 CARTON: TUBE: PAR Clobavate w/w Ointment UK/H/3212/001/DC 9 Module 5 Scientific discussion during initial Procedure I INTRODUCTION Based on the review of the data on quality, safety and efficacy, the member states considered that the application for Clobavate w/w Ointment (PL 17507/0118; UK/H/3212/001/DC) could be approved.

4 This application was submitted by the Decentralised Procedure , with the UK as Reference Member State (RMS), and Ireland as Concerned Member State (CMS). This is a prescription-only medicine (POM). Clobavate w/w Ointment is indicated for the treatment of corticosteroid sensitive dermatoses, including atopic eczema, photodermatitis, otitis externa, primary irritant and allergic dermatitis (including napkin rash), intertrigo, prurigo nodularis, seborrhoeic dermatitis and insect bite reactions. This application is made via the Decentralised Procedure (DCP), according to Article of 2001/83/EC, as amended, as a hybrid application. The reference medicinal product for this application is Eumovate Ointment which was first authorised in the UK to Glaxo Wellcome UK Ltd on 17 September 1975 (PL 10949/0037). Clobetasone butyrate is a topically active corticosteroid of moderate potency (UK Class II - 2-25 times as potent as hydrocortisone). Clobetasone butyrate has little effect on hypothalamo-pituitary-adrenal function.

5 This was so even when applied to adults in large amounts under whole body occlusion. Clobetasone butyrate is less potent than other available corticosteroid preparations and has been shown not to suppress the hypothalamo-pituitary-adrenal axis in patients treated for psoriasis or eczema. No new non-clinical studies were conducted, which is acceptable given that this is a hybrid application cross-referring to a product that has been licensed for over 10 years. To support the application, the Marketing Authorisation Holder submitted four clinical studies. Three clinical studies (two pilot and one pivotal study) were submitted to establish equivalence of the vasoconstriction response between the proposed product Clobavate w/w Ointment (by Auden Mckenzie [Pharma Division] Ltd) and the reference product Eumovate Ointment (GlaxoSmithkline UK). In addition, the pivotal study also compared topical bioequivalence of the test and reference product through surrogate efficacy and safety measures.

6 A fourth clinical study (cumulative skin irritation study) was submitted to determine and compare the mean cumulative irritation score of the proposed product Clobavate w/w Ointment (by Auden Mckenzie [Pharma Division] Ltd) and the reference product Eumovate Ointment (GlaxoSmithkline UK). The studies were carried out in accordance with Good Clinical Practice (GCP). The RMS has been assured that acceptable standards of GMP are in place for this product type at all sites responsible for the manufacture, assembly and batch release of this product. The RMS and CMS considered that the application could be approved with the end of Procedure (Day 204) on 17 December 2012. After a subsequent national phase, the licence was granted in the UK on 18 January 2013. PAR Clobavate w/w Ointment UK/H/3212/001/DC 10 II. ABOUT THE PRODUCT Name of the product in the Reference Member State Clobavate w/w Ointment Name(s) of the active substance(s) (INN) Clobetasone butyrate Pharmacotherapeutic classification (ATC code) Corticosteroid, moderately potent (group II) (D07 AB01) Pharmaceutical form and strength(s) Ointment, w/w.

7 Reference numbers for the Mutual Recognition Procedure UK/H/3212/001DC Reference Member State United Kingdom Member States concerned Ireland Marketing Authorisation Number(s) PL 17507/0118 Name and address of the authorisation holder Auden Mckenzie (Pharma Division) Ltd McKenzie House Bury Street Ruislip Middlesex HA4 7TL UK PAR Clobavate w/w Ointment UK/H/3212/001/DC 11 III SCIENTIFIC OVERVIEW AND DISCUSSION QUALITY ASPECTS S. Active substance INN: Clobetasone butyrate. Chemical name: 1R, 2S, 10S, 11S, 13S, 14R, 15S)-14-(2-chloroacetyl)-1-fluoro-14-hyd roxy-2,13,15-trimethyltetracyclo[ , ,15]heptadeca-3,6-diene-5,17-dione. Structure: Molecular formula: C26H32 ClFO4 Molecular weight: g/mol Appearance: Clobetasone butyrate is a white or almost white powder. Solubility: Clobetasone butyrate is practically insoluble in water, freely soluble in acetone and methylene chloride and slightly soluble in ethanol (90%). Clobetasone butyrate is the subject of a European Pharmacopoeia monograph.

8 Synthesis of the active substance from the designated starting materials has been adequately described and appropriate in-process controls and intermediate specifications are applied. Satisfactory specification tests are in place for all starting materials and reagents and these are supported by relevant certificates of analysis. An appropriate specification is provided for the active substance. Analytical methods have been appropriately validated and are satisfactory for ensuring compliance with the relevant specifications. Appropriate proof-of-structure data have been supplied for the active substance. All potential known impurities have been identified and characterised. Satisfactory certificates of analysis have been provided for all working standards. Batch analysis data are provided and comply with the proposed specification. Suitable specifications have been provided for all packaging used. The primary packaging has been shown to comply with current guidelines concerning contact with food.

9 Appropriate stability data have been generated supporting a suitable retest period when stored in the proposed packaging. P. Medicinal Product Other Ingredients Other ingredients consist of the pharmaceutical excipients liquid paraffin and white soft paraffin. PAR Clobavate w/w Ointment UK/H/3212/001/DC 12 All excipients comply with their respective European Pharmacopoeia monograph. Satisfactory Certificates of Analysis have been provided for all excipients. None of the excipients contain materials of animal or human origin. No genetically modified organisms (GMO) have been used in the preparation of these products. Pharmaceutical Development The objective of the development programme was to formulate a stable topical preparation (ointment) that is comparable in performance to the reference product Eumovate Ointment. A satisfactory account of the pharmaceutical development has been provided. Comparative in-vitro diffusion and impurity profiles have been provided for the proposed and originator products.

10 Manufacturing Process Satisfactory batch formulae have been provided for the manufacture of the product, along with an appropriate account of the manufacturing process. The manufacturing process has been validated at pilot scale and has shown satisfactory results. Finished Product Specification The finished product specification proposed is acceptable. Test methods have been described and have been adequately validated. Batch data have been provided and comply with the release specifications. Certificates of analysis have been provided for all working standards used. Container-Closure System The finished product is packaged in collapsible aluminium tubes internally coated with an epoxy resin based lacquer and closed with a polypropylene cap and is available in pack sizes of 30g and 100g tubes. It has been stated that not all pack sizes may be marketed, however, the marketing authorisation holder has committed to submitting the mock-ups for any pack size to the relevant regulatory authorities for approval before marketing.