Circassia Initiates Phase II Clinical Study With Novel Anti-Allergy Technology

    OXFORD, England, Feb. 27 /CNW/ - Circassia Ltd, a specialty
biopharmaceutical company focused on controlling immune system responses,
announced today that it has initiated a phase II clinical study with its
anti-allergy technology, ToleroMune. Circassia is conducting the study in the
field of cat-dander allergy, and aims to complete the trial in the coming
    This clinical study builds on the results of a previous double-blind,
placebo-controlled phase II trial, which provided proof-of-concept for the
ToleroMune technology. The current double-blind, placebo-controlled phase II
trial will study both safety and surrogate efficacy outcomes, following
escalating doses administered via two different routes (intradermal and
subcutaneous). The study is taking place in Germany in up to 11 patient
cohorts, with each containing 8 subjects with cat-dander allergy. Trial
recruitment is progressing rapidly, and dosing is complete in the first
patient cohort and ongoing in the second and third groups of patients.
    "With clinical proof-of-concept already established for our ToleroMune
technology, this phase II study will provide us with valuable data on both the
most appropriate route of administration and dose optimization, which should
be applicable across our entire anti-allergy product range," said
Steve Harris, Circassia's CEO. "This study is particularly important for
Circassia, moving our lead product closer to market, and at the same time
establishing a development pathway for our other anti-allergy products."
    Circassia's anti-allergy products have the potential to address
significant market opportunities. Currently, over 150 million people suffer
from allergic rhinitis in the US and Europe. The prevalence of cat-dander
allergy is also high, with approximately 17% of Americans and 9% of Europeans
suffering from the condition. Existing treatments have a number of issues,
either providing symptomatic relief only or requiring lengthy specialist
physician supervision over a period of many months due to potential serious,
even life-threatening, adverse reactions. In contrast, Circassia's ToleroMune
technology uses small sections of allergens (termed T-cell epitopes) to
rapidly desensitize sufferers, while minimizing the potential for adverse

    About Circassia

    Circassia is a specialty biopharmaceutical company focused on developing
medicines designed to control immune system responses. The company has a
highly experienced management team with a proven track record in product
development and commercialization, and having successfully completed two
substantial fundraising rounds is backed by a syndicate of world-class venture
capital and institutional investors, which includes Imperial Innovations,
Lansdowne Partners, Goldman Sachs and Invesco Perpetual.
    Circassia's lead products target allergies utilizing the company's
proprietary T-cell epitope desensitization technology, ToleroMune, which was
originally developed at Imperial College London. The company is also
developing its ToleroTrans organ anti-rejection technology, which uses a
similar approach to down-regulate immune responses in transplant patients.
Circassia has a number of ongoing development programmes, with the most
advanced against cat-dander allergy in phase II clinical testing.
    For more information please visit

For further information:

For further information: Steve Harris, CEO Circassia, Tel:
+44-1865-784-574; Rob Budge, RJB Communications, Tel: +44-1865-760-969,
Mobile: +44-7710-741-241

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Circassia Ltd

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