A world-class allergy & asthma specialty biopharma business - Corporate presentation - Circassia

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A world-class allergy & asthma specialty biopharma business - Corporate presentation - Circassia
Corporate presentation
July 2015

A world-class allergy & asthma specialty biopharma business
A world-class allergy & asthma specialty biopharma business - Corporate presentation - Circassia
Disclaimer

Neither this presentation nor any verbal communication shall constitute, or form part of, any offer, invitation or
inducement to any person to underwrite, subscribe for, or otherwise acquire or dispose of, any shares or other
securities in Circassia Pharmaceuticals plc (“Circassia”).

Forward-looking statements
This presentation and information communicated verbally to you may contain certain projections and other
forward-looking statements with respect to the financial condition, results of operations, businesses and
prospects of Circassia. The use of terms such as “may”, “will”, “should”, “expect”, “anticipate”, “project”,
“estimate”, “intend”, “continue”, “target” or “believe” and similar expressions (or the negatives thereof) are
generally intended to identify forward-looking statements. These statements are based on current expectations
and involve risk and uncertainty because they relate to events and depend upon circumstances that may or
may not occur in the future. There are a number of factors which could cause actual results or developments to
differ materially from those expressed or implied by these forward-looking statements. Any of the assumptions
underlying these forward-looking statements could prove inaccurate or incorrect and therefore any results
contemplated in the forward-looking statements may not actually be achieved. Nothing contained in this
presentation or communicated verbally should be construed as a profit forecast or profit estimate. Investors or
other recipients are cautioned not to place undue reliance on any forward-looking statements contained herein.
Circassia undertakes no obligation to update or revise (publicly or otherwise) any forward-looking statement,
whether as a result of new information, future events or other circumstances.

                                                                                                                     2
A world-class allergy & asthma specialty biopharma business - Corporate presentation - Circassia
Circassia overview
Building an allergy & asthma champion

     Strong broad-based specialty biopharma business
      – 2 currently marketed products sold to allergy / asthma specialists
      – 12 products in development for allergy, asthma and COPD
      – Lead allergy candidate in phase III (data expected H1 2016)
      – Lead asthma product filed Q3 2014
      – Potential for 8 product launches by end 2021
      – Strong IP across portfolio

     Commercial infrastructure focused on allergy / asthma specialists
      – Focused commercialization strategy: direct to specialists in key markets and partner in primary care
      – Direct sales currently targeting key customers in US and Germany
      – Market access and payor expertise in place
      – Scalable infrastructure to optimize launch of lead allergy product and broader portfolio

     Strong growth platform
      – Immediate revenues, near-term pipeline and high-value specialty products
      – Novel short-course immunotherapies have potential to revolutionize multi-$bn allergy market
      – Fully funded to deliver pipeline (estimated cash1 ~£230m June 2015)
    1 Cash, cash equivalents and short-term bank deposits
                                                                                                               3
A world-class allergy & asthma specialty biopharma business - Corporate presentation - Circassia
Circassia’s strategy
Building a self-sustaining specialty biopharma company

  Deliver the pipeline
                                                  Market novel products
                                                   Independently in N America
                                                     and major EU markets
                                                   Partnerships elsewhere

 Build broad and
balanced portfolio

                                                                                 4
Strong, deep and balanced pipeline

                    Product                                          2015                               2016                              2017                      2018                2019                     2020               2021

                  NIOX MINO                                Launched

                 NIOX VERO                                 Launched

                PSX1001*                                                                 UK1              UK1                            EU1
           Flixotide® substitute                                                       approval         launch                         launch

               PX1439*                                                                         UK                                    UK                         EU
          Serevent® substitute                                                                filing                               launch                     launch

                PSX2005                                                                                 UK                                         UK                         EU                                            US                  US
           Seretide® substitute                                                                        filing                                    launch                     launch                                         filing               launc
                                                                                                        Ph III             EU / US                        EU / US
                  Cat-SPIRE                                                                             data                filing                         launch
                PSX1050*                                  Partnered – timelines
            Flovent® substitute                           not disclosed publicly
                                                                                                                                                     Ph III         EU / US                  EU / US
                Grass-SPIRE                                                                                                                          data            filing                   launch
        House Dust Mite-SPIRE                                                                                                           Ph II                                            Ph III        EU / US               EU / US
                                                                                                                                        data                                             data           filing                launch
                PSX3001                                                                   PK                                                                                                                     Ph III     US                  US
        Novel triple presentation                                                        study                                                                                                                   data      filing               launc
                                                                                                                                                                    Ph II                                         Ph III    US                 US
              Ragweed-SPIRE                                                                                                                                         data                                          data     filing              launc
               PSX1002                                                                                                                                                               Ph II                                      Ph III         US
        Novel LAMA formulation                                                                                                                                                       data                                       data           filing

Pipeline does not show earlier-stage programmes: Birch-SPIRE, Japanese cedar-SPIRE, Alternaria-SPIRE and home use NIOX device

                                                                                                                 Fully funded to deliver pipeline
*Partnered
1Approval / launch reflects estimates of MHRA review and decentralized procedure timelines only

All timelines are forward-looking projections that involve risks and uncertainties – please see the disclaimer on slide 2 for further details                                                                                              5
Focused commercialization strategy
Targeting direct sales in US & major EU markets

  Circassia US & EU commercial operations

     Corporate administration
     (Finance, HR, IT)
                                                                               KOLs
     Business analytics                               Direct
                                                      sales
     Compliance (legal, regulatory)
                                                      force
     Market access
     Medical affairs
     Marketing                                                    Allergists      Pulmos

     Sales
     Supply chain / distribution
                                                               Top prescribers primary care

                                            Partner
              Partner elsewhere             sales
                                                                      Primary care
                                            force
  Outside US and Europe
  Primary care

                                                                                              6
1
    Marketed products

2
    Asthma / COPD pipeline

3
    Novel allergy immunotherapies

4
    Summary

                                    7
Products marketed in over 40 countries
Direct sales infrastructure in US and EU’s largest allergy market

                                                Direct sales targeting allergy /
                                                 asthma specialists in key markets
                                                Opportunity to expand in EU
                                                Broad international distribution
                                                 network

 Novel products                 Direct sales     Distributors

                                                                                     8
Leadership in FeNO asthma diagnosis & management
Meeting key clinical need in major therapeutic market

  Only point-of-care device available across major markets to measure FeNO to assist diagnosis
  and control of airways disease
    – Strong IP with 72 granted patents in US, EU & Japan with protection currently to 2026

  Asthma is one of largest healthcare burdens
    – 25 million asthmatics in US
    – 14 million physician office / 1.8 million ER visits in US with asthma as primary diagnosis
    – >$50bn medical cost of asthma in US in 2007

  Clinical evidence shows FeNO measurement improves asthma management
   –   Improves diagnosis
   –   Improves determination of inhaled steroid responsiveness
   –   Improves control through tailoring inhaled steroid use
   –   Improves monitoring of treatment compliance
   –   Potential to reduce exacerbations

  Extensive big pharma use in asthma clinical studies
    – Validates the importance of FeNO in asthma
    – Establishes FeNO in market and trains physicians in use of products

                                                                                                   9
Only point-of-care product available across major markets
Roll-out of next generation product in US and Japan

                                     Transition to next
                                    generation product
                                      provides major
                                        opportunity

    NIOX® MINO®                                           NIOX® VERO®
    EU 2004, US 2008,                                     EU 2013, US 2014,
    China 2010, Japan 2013                                Japan 2015

    For ages 4+ in EU; 7+ in US                           For ages 4+ EU; 7+ in US
    10 second test; 90 second result                      Fully portable; enhanced screen interface
    Monitor lasts 3 years or 3,000 tests                  6 and 10 second test; 60 second result
    Limited portability                                   Monitor lasts 5 years or 15,000 tests
                                                          Improved margin on consumables

                                                                                                      10
Endorsement from key allergy / asthma organizations
Included in ATS treatment guidelines and NICE recommendation

                                                               11
Significant market opportunity
         Exemplifies Circassia’s commercialization strategy

                US specialist opportunity                                                                               Robust global
                                                                                                                       revenue growth

                                $190m                                        Direct                                  ‒ 2014 revenues
                                                                             sales               KOLs                  $24.3m1
                                                                             force
                                                                                                                     ‒ 18% CAGR over
                                                                                                                       last 5 years
                                                                                                                     ‒ Strong forecast
                                                                                         Allergists   Pulmos           growth
US primary care opportunity

                                                                                      Top prescribers primary care
                                                                   Partner
                                                                   sales
                  $610m                                            force                    Primary care

                             Long-term upside potential from FeNO home use device currently in planning

1 Average FX rate for year ended 31 December 2014 SEK/$ = 0.1462                                                                         12
Potential to accelerate growth
Foundations in place

                                2015 positioned for growth

 Significant progress in establishing new market category and changing existing paradigm
 FeNO accepted by KOLs and specialists
 Many major guidelines include FeNO
 Scientific evidence / publications support use of FeNO
 Reimbursement established (64% US coverage; targeting 75% by 2016)
 Next generation VERO® device offers significant improvements over predecessor
 VERO® US and Japanese launches H1 2015
 Chinese VERO® approval expected shortly

                                                                                            13
1
    Marketed products

2
    Asthma / COPD pipeline

3
    Novel allergy immunotherapies

4
    Summary

                                    14
Near-term pipeline & longer-term novel formulations

                                                                                                                                                            Device types                                 Significant pricing potential

                                                                                                                                                                                                        ‒ 73.5% of pre-entry brand
                              Focus on pMDI market segment                                                                                                                                                price for first to market
                                                                                                                                                                                                          generic in US during
                                                                                                                                                                                                          exclusivity1
                                                                                                                                                                                                        ‒ 47.8% of pre-entry brand
         Generic directly substitutable products                                                                                                        pMDI                        DPI                   price for only on market
                                                                                                                                                                                                          generic in US1
         – No requirement for significant commercial
           infrastructure
         – Limited development
         – Rapid route to market; near-term revenue
                                                                                                                                                                              Direct
         – Challenging to achieve for respiratory products                                                                                                                                                 KOLs
                                                                                                                                                                              sales
                                                                                                                                                                              force
         – Non-substitutable competitors require promotion

         Novel combinations / products                                                                                                                                                             Allergists   Pulmos

         – Longer more extensive development
                                                                                                                                                                                             Top prescribers primary care
         – Majority of market in primary care                                                                                                             Partner
                                                                                                                                                          sales
         – Circassia to target allergy / asthma specialists                                                                                                                                            Primary care
                                                                                                                                                          force
         – Partner for phase III and targeting primary care

1 Bureau of Economics, Federal Trade Commission, Working Paper No 317. The effect of generic drug competition on generic drug prices during the Hatch-Waxman 180-day exclusivity period. April 2013.
                                                                                                                                                                                                                                         15
Novel technology provides sophisticated API control

                 Technology #1
                                       Technology controls                  Significant potential benefits

                                   ‒ Size                                 Directly substitutable products

                                   ‒ Shape                                ‒ Potential first to market with
                                                                            unique combination of therapeutic
                                   ‒ Aerodynamics                           equivalence, all strengths, similar
                                   ‒ Surface properties                     device, same formulation & cost-
                                                                            effective
Engineered API                     ‒ Manufacturability
                                                                          Novel products
                                   ‒ Product stability
                                                                          ‒ Optimized combinations and
                                   ‒ Product performance
                                                                            novel formulations
                 Technology #2

   Established at commercial scale in cGMP compliant FDA-approved facilities
   Broad IP protecting apparatus to 2022 in US & 2019 in EU; patents pending will extend
   product and process protection to 2030 in US and 2028 in EU

                                                                                                                  16
Lead product filed in EU
           Collaboration with Mylan                                                                                                                                               PSX1001
                                                                                                                                                                                  Flixotide®
                                                                                                                                                                                                    PSX1050
                                                                                                                                                                                                    Flovent®
                                                                                                                                                                                  substitute (EU)   substitute (US)

                                                    EU filing                                                                                                                 Mylan collaboration

              Product candidate targeting substitution for
              GSK’s Flixotide® pMDI (Flovent® pMDI in US)                                                                                          Technology validation by leading company

              Filing validated and under assessment Q3 2014                                                                                        Certain marketing rights retained in specific EU
                                                                                                                                                   territories
              Filing review under EU orally inhaled products
                                                                                                                                                   Full rights retained in China, South America,
              guidelines that allow approval based on in vitro
                                                                                                                                                   Middle East and Africa
              equivalence data only
                                                                                                                                                   Mylan has marketing rights in agreement territory1
              Decentralised procedure - MHRA reviewing file
                                                                                                                                                   FDA guidelines require PK and PD studies in US
              Decision on first approval expected 2H 2015

                                                         Estimated $930m originator sales ($680m in US; $250m ex-US)

1 USA, Canada, Australia and New Zealand, India, Japan, Europe (including the EU and EFTA states (Iceland, Liechtenstein, Norway and Switzerland)), Turkey, Russia and CIS)
Originator sales estimate based on GSK Annual Reports 2011 and 2014 and selected IMS data 2011 and 2012
                                                                                                                                                                                                                      17
Strong pipeline of follow-up products
                                                                                                                PX1439       PSX2005
                                                                                                                Serevent®    Seretide®
                                                                                                                substitute   substitute

                                Serevent® pMDI substitute
                                     –      First registration batches in place
                                     –      UK filing anticipated H2 2015
                                     –      Estimated originator sales $60m1
                                     –      Partnered in UK / Ireland

                                Seretide® pMDI substitute
                                     –      Global rights retained
                                     –      Initial registration batches in place
                                     –      UK filing anticipated H1 2016
                                     –      Originator sales estimated $1.8bn1

                                                                                 Targeting nearly $2bn market

1 Originator sales estimates based on GSK Annual Reports 2011 and 2014 and selected IMS data 2011 and 2012

                                                                                                                                          18
Longer-term high value novel products
                                                                                                                                                 PSX1002
                                                                                                                                                 Novel LAMA
                                                                                                                                                 formulation

                          Optimized glycopyrronium bromide formulation
                               – Potential Spiriva® competitor targeting predicted >$3bn1 opportunity
                               – Compelling phase IIa results

                                                     Significant efficacy vs placebo; once daily dosing potential

                                                       0.20

                                                       0.15

                                                       0.10
                                         Mean FEV1

                                                       0.05

                                                       0.00

                                                       -0.05

                                                       -0.10

                                                       -0.15
                                                               0                   5               10        15        20         25        30
                                                                                                          Time (h)
                                                       PSX1002 12.5μg                  PSX1002 25μg     PSX1002 50μg   PSX1002 100μg   Placebo

1 Respiratory Market 2025: Taking A Deep Breath And A Deep Dive – Jefferies 2013 Equity Research
                                                                                                                                                               19
Significant potential benefits for combination
            products                                                                                                                               PSX3001
                                                                                                                                                   Novel triple
                                                                                                                                                   presentation

                                         Conventional formulation                                                     Proprietary multi-component particles
                                         results in random mixture                                                             provide consistency

                                                  ICS/LABA
                                                  (eg Seretide®)
                                                                                                                      DPI

                                                                                                              MCPTM

                                                                   LAMA
                                                                   (eg Spiriva®)

                               Proprietary MCPTM technology enables constant ratio of multiple APIs in each particle
                               Provides dose on label at individual particle level
                               Potential for dual & triple combinations (ICS/LABA, LABA/LAMA, ICS/LABA/LAMA)1
                               Extensive testing already undertaken
                               Triple combination ICS + LABA/LAMA1 targeting emerging ~$8bn2 market opportunity expected
                               to enter clinic H2 2015

1 Inhaled corticosteroid (ICS) / long-acting beta agonist (LABA) / long-acting muscarinic antagonist (LAMA)
2 Respiratory Market 2025: Taking A Deep Breath And A Deep Dive – Jefferies 2013 Equity Research
                                                                                                                                                                  20
Approach exploits market dynamics
                  Opportunity to capture modest share of significant markets

                                          Global key inhaled maintenance respiratory market1 (excludes ICS monotherapy market: >US$2bn in 2014)

                                     25

                                                                                                                            Monotherapy ICS PSX1001 / PSX 1050 targeting
                                                                                                                                  Flixotide® / Flovent® substitution
                                     20
              Global Sales (US$bn)

                                     15                                                                                         Triple fixed dose combination PSX3001

                                                                                                                                    Monotherapy LAMA PSX1002
                                     10

                                                                                                                                Monotherapy LABA PSX1439 targeting
                                      5
                                                                                                                                       Serevent® substituion

                                                                                                                               LABA/ICS PSX2005 targeting Seretide®
                                                                                                                                          substitution
                                     0
                                     2008A     2010A    2012A    2014E        2016E         2018E   2020E   2022E   2024E

                                          LABA/ICS     LABA    LAMA and SAMA               LABA/LAMA    LABA/LAMA/ICS

                                                              Potential near term approvals with high value follow up products

1 Respiratory Market 2025: Taking A Deep Breath And A Deep Dive – Jefferies 2013 Equity Research                                                                           21
1
    Marketed products

2
    Asthma / COPD pipeline

3
    Novel allergy immunotherapies

4
    Summary

                                    22
Allergic rhinitis is a global healthcare problem
Affects 10-20% of global population

   Allergic diseases affect over 1 billion people worldwide 3
   Allergic rhinitis is the world’s most prevalent chronic non-communicable disease3
   Allergy is medical condition with greatest impact on work productivity in US4
   Allergy is a precursor of asthma; treatment with immunotherapy halts “allergic march”

                                        USA                                                                                   Europe
                                              Skin prick test positive                                                             Skin prick test positive
 Rank                  Allergen                                                          Rank               Allergen
                                             (% Popln)        (million)1                                                          (% Popln)        (million)2
    1          House dust mite                    28                               86       1        House dust mite                       22          82
    2          Perennial rye                      27                               84       2        Grass pollen                          17          63
    3          Short ragweed                      26                               82       3        Cat                                   8-10      30-37
    4          Cockroach                          26                               82       4        Birch pollen                           6          22
    5          Bermuda grass                      18                               57       5        Mould                                  4          15
    6          Cat                                17                               53       6        Olive pollen                           3          11
Source: Arbes et al. J Allergy Clin Immunol. 2005 Aug;116(2):377-83.                    Source: Bousquet et al. Allergy. 2007: 62: 301-9

        Targeted by Circassia                    Future potential targets

                                   Immunotherapy is the only way to treat the underlying disease

  1 US Census Bureau, 2012                       3 EAACI Global Atlas of Allergy 2014
  2 World Bank, 2012                             4 Gemson & Eng, August 2004
                                                                                                                                                                23
Moderate to severe allergy is inadequately addressed
 by current therapies

       Allergen avoidance: not feasible in majority of cases
       Symptomatic drugs: (anti-histamines, nasal corticosteroids etc) limited efficacy
            –       Prescription market estimated at approximately $7bn1

Whole allergen                                                                            Subcutaneous                                                                  Sublingual
immunotherapy                                                                          Immunotherapy (SCIT)                                                         Immunotherapy (SLIT)

 Targets cause of allergy                                                        Allergen injected                                                        Allergen under the tongue
  leading to tolerance of                                                         Lengthy treatment 3 - 5yrs                                               Lengthy treatment 1 - 3yrs
  allergens                                                                       Poor patient adherence                                                   Low adherence (7% complete 3yrs2)
                                                                                  Non-standardized dosing                                                  US requires EpiPen prescription
 Reduces “allergic march” to
  asthma                                                                          High frequency of side effects incl                                      High frequency of side effects incl
                                                                                  potential for anaphylaxis                                                potential for anaphylaxis

                                                                           Total 5 year cost: ~$3,600 – $6,000*                                          Total 1 year cost: $1,400 - $2,700**
                                                                                                                                                            Total 3 year cost: ~$9,000**

                Majority of allergic rhinitis patients consulting a GP have moderate to severe symptoms3

  1 Bloomberg                                                                                           * Based on Circassia’s estimates
  2 J Allergy Clin Immunol. 2013 Aug;132(2):353-60.e2. doi: 10.1016/j.jaci.2013.03.013. Epub 2013 May   ** Based on Merck/ALK and Stallergenes published US prices for SLIT treatments
  3 Bousquet et al. J Allergy Clin Immunol. 2006 Jan;117(1):158–62
                                                                                                                                                                                                 24
Proprietary ToleroMune® technology
Designed to treat underlying disease with minimal side-effects

                                                                                                    Whole
                                                                                                   allergen
ToleroMune® identifies T cell epitopes
 – Short linear stretches of amino acids in allergen sequence
 – Binds to antigen presenting cells to induce regulatory T cells
 – Identified from blood of allergic individuals
SPIREs – Synthetic Peptide Immuno-Regulatory Epitopes
Short treatment designed to provide efficacy without the safety issues
 – Regulatory T cells down-regulate allergic response                                               T cell
                                                                                                   epitopes
 – Lack of B cell epitopes avoids cross-linking of mast cells eliminating                          selected
   early response / no need to dose escalate
                                                                             Final product is a
 – Synthetic manufacture – no extraction from whole allergens               room temperature
                                                                            stable, lyophilized
Broadly applicable across range of allergies                                  vial containing a
                                                                             mix of 7 peptides
 – Allergens already identified; no research required                              for injection

Initial development of new SPIRE candidate takes ~18 months

                 Modern, synthetic, rationally-designed pharmaceuticals
                                                                                                        25
Technology validated with clinical proof-of-concept
in four programmes

                  Development
                                       Next milestone        Phase III data           Key findings
                     stage

                                         Pilot pediatric                       Proof-of-concept in
               Phase III field study
Cat-SPIRE                                 safety study           H1’16          multiple products
               (n = 1,409)
                                       completes H2 ‘15

                                       Phase II asthmatic                      Short-course treatment
  Grass-       Phase IIb study
                                         study reports           H2’17
  SPIRE        (n = 282)
                                            H1‘15
                                                                               Efficacy persists over time
House Dust     Phase IIb study         Fully recruit phase
Mite (HDM) -                                                     H1’19         Enhanced efficacy in more
               (n = 172)                 IIb field study
   SPIRE                                                                        symptomatic subjects

                                       Evaluate in follow-
 Ragweed-      Phase IIb study
                                       up & higher-dose          H1’20         Safety profile similar to
  SPIRE        (n = 280)                                                        placebo
                                             study

         Japanese Cedar-SPIRE, Birch-SPIRE and Alternaria-SPIRE in early stage development

                                                                                                              26
Cat-SPIRE phase IIb
  Proof-of-concept

                                                                                        Skin prick +ve Cat:
               Randomised, placebo-controlled parallel group chamber study                US: 17%1 (53m)
                  – Commercial-scale room-temperature stable formulation                EU: 8-10%2 (30-37m)

               202 subjects randomised
                  – 2 dosing regimens and placebo

              Primary objective: evaluate efficacy in cat allergic subjects
              following cat allergen challenge

               Subjects in chamber 3 hours per day for 4 days at baseline and at
               post-treatment challenge
                  – Controlled levels of cat dander (similar to house that has a cat)
                  – Symptoms recorded every 30 minutes

              Comparison of symptom scores at challenge 5 months after                  Exposure
                                                                                        chamber
              starting treatment to baseline                                            Toronto

1 Arbes et al. J Allergy Clin Immunol. 2005 Aug;116(2):377-83
2 Bousquet et al. Allergy. 2007: 62: 301-9
                                                                                                              27
Cat-SPIRE phase IIb (n=202)
 Confirmed efficacy

          Total Rhinoconjunctivitis Symptoms Score (“TRSS”)
          Patient self-rated scores used as primary efficacy       Overall TRSS improvement
          measure                                                  of 2.1 vs. placebo (p = 0.05)
          Scoring system required by regulators
               ‒       Used for approval of intranasal steroids,
                       antihistamines etc
          Scores measured on 4-point rating scale
               ‒       0: absent
               ‒       1: mild, barely noticeable
               ‒       2: moderate, annoying / troublesome
               ‒       3: severe, incapacitating
          SPIRE studies use 8 symptoms = 24-point scale;
          Cat-SPIRE used sneezing & runny / blocked / itchy
          nose & itchy / watery / red / sore eyes

          TRSS score of 8 could be 8 “mild / barely
          noticeable scores”
          TRSS score of 12 could be 4 “mild / barely
          noticeable” and 4 “moderate / annoying” scores
Note: Based on non-asthmatic subjects

                                                                                                   28
Cat-SPIRE phase IIb
Sustained benefit at 1 and 2 years with no additional dosing

                              1 year follow-up study:                                                                              2 years follow-up study:
                           Efficacy enhanced over time                                                                            Efficacy persists at 2 years

                    Overall TRSS improvement
                    of 3.9 vs. placebo (p = 0.01)                                                                                 Overall TRSS improvement
                                                                                                                                  of 3.9 vs. placebo (p=0.13)

                                                                                                                                                                 Secondary endpoint: TRSS
                                                                                                                                                                improvement at end of day 4:
                                                                                                                                                                   5.1 vs. placebo (p=0.02)

                                                           Tolerance persists at least 2 years without further dosing

Published: J Allergy Clin Immunol. 2013 Jan;131(1):103-9.e1-7 / Clin Exp Allergy. 2015 May;45(5):974-81. doi: 10.1111/cea.12488
                                                                                                                                                                                               29
Cat-SPIRE represents therapeutic step change
More effective and more convenient

                          Product/Study3                                                                                   Treatment                                                  Difference Active vs. Placebo
                                                                                                                                                                                                  TRSS

Cat-SPIRE chamber study1                                                                      4 doses 4 weeks apart                                                                                                 3.9

ALK-Abelló Grazax® pivotal field study2                                                       Daily 16 weeks before and during
                                                                                                                                                                                                                    1.0
(licensed in Europe) SLIT tablets                                                             season
Stallergenes Oralair® grass field study2                                                      Daily 16 weeks before and during
                                                                                                                                                                                                                    1.4
(licensed in Europe) SLIT tablets                                                             season
Allergy Therapeutics Pollinex® Quattro
grass field study2 (filed Germany in
                                                                                              4 administrations 1 week apart                                                                                        1.1
2009, not yet approved) adjuvanted
whole allergen IT
GSK fluticasone furoate perennial
                                                                                              Once daily for 4 weeks                                                                                                0.86
rhinitis field study2 intranasal steroid

Sanofi fexofenadine cat chamber study2                                                        180 mg 2 hours before chamber (ie
                                                                                                                                                                                                                    1.3
antihistamine                                                                                 pre-symptoms)

1 Based on the 4 x 6 nmol dose of Cat-SPIRE in CP005A
2 Source: Summary of product characteristics for each product, except i) Fexofenadine: Ann Allergy Asthma Immunol. 2006 Feb;96(2):327-33 and ii) Pollinex Quattro: EAACI XXVIII Congress 2009 Poster presentation
3 TRSS scoring ranges from 16 – 24 points for these studies

                                                                                                                                                                                                                           30
HDM-SPIRE phase IIb (n=172)
                                                                                               Skin prick +ve HDM:
Efficacy demonstrated at 1 year                                                                  US: 28%1 (86m)
                                                                                                 EU:22%2 (82m)

                                  Overall TRSS improvement of 2.8
                                  vs. placebo (p = 0.02) at one year

                                                                         Increasing symptom severity

                               Excellent data –                        Treatment effect maintained in more
                         similar to Cat-SPIRE at 1 year                      symptomatic subjects
1 Arbes et al. J Allergy Clin Immunol. 2005 Aug;116(2):377-83
2 Bousquet et al. Allergy. 2007: 62: 301-9
Selected for oral presentation at AAAAI 2014
                                                                                                                     31
HDM-SPIRE phase IIb 2 year follow-up study
Improvement maintained; enhanced effect in more symptomatic

      Matched subjects at year 1 and 2                             Subjects with baseline TRSS >12

                              Overall TRSS improvement of 1.4 vs          Overall TRSS improvement of
                                       placebo at two years                       3.0 vs. placebo

      Overall TRSS improvement of
        1.4 vs placebo at one year

                     Symptom improvement sustained at same level in same patients

                                                                                                        32
Grass-SPIRE phase IIb (n=282)                                                                                    Skin prick +ve
Efficacy demonstrated after first grass season                                                                   Grass:
                                                                                                                 US: 27%1 (84m)
                                                                                                                 EU: 17%2 (63m)

            Subjects with mean baseline TRSS ≥8                                   Subjects with mean baseline TRSS ≥12

                            Overall TRSS improvement of                                   Overall TRSS improvement of
                             1.6 vs. placebo (p = 0.035)                                    2.0 vs. placebo (p=0.040)

             Increasing treatment effect over time                              Enhanced efficacy in the more symptomatic
1 Arbes et al. J Allergy Clin Immunol. 2005 Aug;116(2):377-83 (Perennial rye)
2 Bousquet et al. Allergy. 2007: 62: 301-9 (Grass pollen)
                                                                                                                                  33
Grass-SPIRE phase IIb long-term follow-up studies
Symptom improvement confirmed in same subjects

    Matched subjects (8 x 6 nmol group)                    Matched subjects (4 x 12 nmol group)

                        TRSS -5.0 vs.
                     placebo (p = 0.004)                                        TRSS -4.5 vs.
                                                                             placebo (p = 0.008)

         TRSS -2.9 vs.                                         TRSS -4.0 vs.
      placebo (p = 0.075)                                   placebo (p = 0.016)
                                        TRSS -3.4 vs.                                         TRSS -4.1 vs.
                                     placebo (p = 0.033)                                   placebo (p = 0.010)

    Initial treatment effect maintained after three grass pollen seasons despite no further doses

                                                                                                                 34
Ragweed-SPIRE phase IIb (n=275)
                                                                                                                                      Skin prick +ve
Proof-of-concept demonstrated (2011)                                                                                                    Ragweed:
                                                                                                                                      US: 26%1 (82m)

                Subjects with mean baseline TRSS ≥8                                               Subjects with mean baseline TRSS ≥12

                                          Overall TRSS improvement of                                    Overall TRSS improvement
                                           1.7 vs. placebo (p = 0.066)                                   of 2.9 vs. placebo (p = 0.044)

                                                                    Stronger efficacy in more symptomatic subjects
1 Arbes et al. J Allergy Clin Immunol. 2005 Aug;116(2):377-83
J. Allergy Clin. Immunol. 2012 Feb 129, Issue 2, Supplement , Page AB368
                                                                                                                                                       35
Ragweed-SPIRE phase IIb
Comparison treatment effect 2014 vs 2011 study

                                                 2014 (mean baseline TRSS ≥12)                           2011 (mean baseline TRSS ≥12)

                                                                   Overall TRSS improvement                     Overall TRSS improvement
                                                                    1.2 vs. placebo (p = 0.149)                  2.9 vs. placebo (p = 0.044)
Mean change in TRSS (baseline minus follow-up)

                                                 Marked placebo response
                                                   28 of 70 placebo-treated
                                                  subjects (40%) had >25%
                                                 reduction in symptom score

                                                              Greater placebo effect in 2014 study vs 2011 study on days 3 & 4

                                                                                                                                               36
Ragweed-SPIRE phase IIb (2014)
        Field score endpoint

              Mean change in Combined Score from pre-                              Mean Combined Score and mean ragweed
                      season to peak season                                                    pollen count

                                                           Placebo   8 x 12 nmol

       ITT population                                        68          69

       Mean change in CS                                    0.79        0.53

       p value vs placebo                                     -        0.090

               Field endpoint: combined TRSS (0-24 scale) and
               rescue medication use (RMS) score (0-3 scale)
               - Combined Score = (TRSS / 8) + (RMS); 0-6 scale

               Treatment effect 33% vs placebo
               - FDA requires at least 15% treatment effect1
               - World Allergy Organization: at least 20% treatment
                 effect clinically meaningful

1 With upper bound of 95% confidence interval minimum10%
                                                                                                                          37
Potential to revolutionize immunotherapy market

                                                                                        Current immunotherapy
                                    Key characteristics
                                                                                     Subcutaneous    Sublingual

 Short course immunotherapy giving clearly superior efficacy
            Efficacy for at least a year with single course
            Two year follow-up data encouraging¹
                                                                                                      
 Very good safety and well-tolerated
            Safety profile similar to placebo
            No patients with anaphylaxis
                                                                                                      
 Standardized dose
            No need for dose escalation
            No need for doses tailored to individual patients
                                                                                                      
 State-of-the-art synthetic production process
            No natural whole allergen
            No potency variation between vials
                                                                                                      
                                                                                                      
                                                                 Micro-needles
 Patient-friendly administration

1 Demonstrated for Cat-SPIRE, HDM-SPIRE and Grass-SPIRE
                                                                                                                  38
Full global rights retained
     Ideal fit with focused commercialization strategy

                           Commercialization strategy                US Cat-SPIRE target population

    Independent in key markets                                       Cat-allergic individuals          ~24 million1
    – Scalable infrastructure in place
    – Train on Cat-SPIRE in preparation for launch                        Consulting an allergist /     ~1.3 million   Secondary
                                                                          specialist                                   focus
    – Build relationships with allergists early                                                                        Patients not
                                                                                                                       offered IT
    – Map out customers & key accounts in advance
    – Current sales support field force build well ahead of launch                Offered IT           ~1.0 million
    – Target steeper sales curve with higher peak
                                                                                                                       Primary focus
                                                                                                                       Patients
    Sales force plan                                                                                                   declining IT
    – 100 in N America initially targeting 3,500 allergists
    – 90 in EU targeting high prescribers among 6,600 allergists /
      specialists
                                                                                                      Accept IT        Secondary
                                                                                                      (~378k)          focus
    Subsequently target other high prescribers                                                                         Patients failing to
                                                                                                                       complete IT
    – Selected ENT physicians
    – Special interest primary care physicians
                                                                                                           Complete
    Partner in other markets                                                                               IT (~60k)

1 Kantar Health Quantitative Cat Allergy Report 2010

                                                                                                                                       39
Multiple studies demonstrate significant
market opportunity

        Selected sizing and pricing studies                                 Opportunity for Cat-SPIRE

                                                                            Illustrative peak sales of
  US market research for Cat-SPIRE (Kantar / 2010)                        c.$500-700mm for US and EU
  – 93 allergists, 82 PCPs, 8 payers
  – US opportunity: $0.5-1.0 billion peak annual sales               US: 200,000         x   $2,600 = $520mm
  US pricing research for Cat-SPIRE (Bridgehead / 2011)
  – 101 allergists, 105 patients, 35 payers                    Equals 5 of 34 new cat
                                                                                                 US pricing: Supported
  – Supports pricing of $2,000-3,000                           allergy patients / month
                                                                                                 by third party research
  EU market and pricing research for Cat-SPIRE (PRMA / 2011)   already coming to allergist
  – 27 specialists, 28 PCPs, 27 payers
  – Supports Grazax as the likely benchmark
  US market overview for 4 lead SPIRE products (LEK / 2009)      EU: 50,000         x    $1,500 (€1,100) = $75mm
  – $2.6bn opportunity in US
                                                               1.5 million patients in        EU pricing: Discount to
  US and European research for 4 lead SPIREs (GfK / 2014)
                                                               EU already on allergy          Grazax cost of €2.5-5.3k
   –    $2,600 pricing in US                                   immunotherapy                  over 3+ years

                            Consistent assessment of commercial opportunity

                                                                                                                           40
1
    Marketed products

2
    Asthma / COPD pipeline

3
    Novel allergy immunotherapies

4
    Summary

                                    41
Strong newsflow

News                                                                                              Date*                   Description
Grass-SPIRE support study                                                                        H1‘15                    Observational study (TG003) reports (n=108)
Grass-SPIRE phase II results                                                                     H1‘15                    Phase II controlled asthmatic study (TG004) reports (n=54)
NIOX MINO® / VERO® sales data                                                                    H2’15                    Interim results with H1’15 sales results
Flixotide® substitute approval outcome1                                                          H2’15                    MHRA response to filing1
Cat-SPIRE safety study complete                                                                  H2‘15                    Pilot pediatric safety study (CP009) completes (n≥12)
Ragweed-SPIRE phase IIb complete                                                                 H2’15                    Phase IIb follow-up field study (TR006A) completes (n≤280)
HDM-SPIRE study recruitment                                                                      H2’15                    Complete phase IIb field study (TH005) recruitment (n=660)
Serevent® substitute filing                                                                      H2’15                    EU decentralized procedure filing to MHRA
Flixotide® substitute launch1 (if approved)                                                      H1’16                    UK launch1 (if approved)
Seretide® substitute filing                                                                      H1’16                    EU decentralized procedure filing in UK
NIOX MINO® / VERO® sales data                                                                    H1’16                    Year end results with FY’15 sales
Cat-SPIRE phase III results                                                                      H1‘16                    Phase III study (CATALYST) reports (n=1,409)
Grass-SPIRE phase III start                                                                      H1‘16                    Enrolment starts into phase III field study
NIOX MINO® / VERO® sales data                                                                    H2’16                    Interim results with H1’16 sales results
Cat-SPIRE filing                                                                                 H2‘16                    File for marketing approval

*To be included in announcements as appropriate and in-line with financial calendar including half-year / full-year results
1Approval / launch reflects estimate of MHRA review timelines only

                                                                                                                                                                                       42
Delivering on our strategy

   Delivering the pipeline
     – Flixotide® substitute approval anticipated H2 2015
     – Two regulatory filings anticipated by end H1 2016
     – On track to report Cat-SPIRE phase III in H1 2016
     – Strong clinical progress in multiple late-stage allergy programmes

   Commercializing products independently in key markets
     – Direct sales targeting allergy / asthma specialists in US and Germany
     – Scalable infrastructure to optimize first allergy product launch
     – Market access and payor expertise in place
     – Leverageable across broader portfolio

   Building broad and balanced portfolio
     – Pipeline of 12 products in development for allergy, asthma and COPD
     – Potential for 8 product launches by end 2021

World-class allergy & asthma specialty biopharma business fully funded to deliver portfolio
                                                                                              43
A world-class specialty biopharma business

                                        Marketed
                                        products

                                                    Direct sales in US
                                                     and Germany

                                                   Broad international
                                                      distribution
                                                        network

Strong pipeline
                     Direct sales   Distributors

                                                                     44
Contact us:               Investors                Financial and Corporate
                                                   Communications
Circassia Ltd             Steven Harris, CEO       FTI Consulting
Northbrook House          Julien Cotta, CFO        200 Aldersgate
Robert Robinson Avenue                             Aldersgate Street
The Oxford Science Park   t: +44 (0) 1865 405560   London EC1A 4HD
Oxford, OX4 4GA
                                                   t: +44 (0) 20 3727 1000
w: www.circassia.com                               e: circassia@FTIConsulting.com
e: ir@circassia.com

                                                                                    45
Unaudited group financial information

                             Revenues £21.9m1,2

                             Operating loss £66.4m1,2

                             Estimated cash assuming completion June 2015 ~£230m3

1 Circassia & Aerocrine year ended 31 December 2014; Prosonix year ended 31 March 2014
2 SEK:£ average FX rate for year ended 31 Dec 2014 11.29:1
3 Director’s estimate; excludes £30m consideration contingent on UK approval

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