Encouraging results from Circassia's ToleroMune ragweed allergy T-cell vaccine phase II clinical trial

Results Mark Third Successful Phase II Study With ToleroMune(R) T-Cell Vaccines

Circassia Ltd, a specialty biopharmaceutical company focused on allergy, today announced that its ToleroMune(R) ragweed allergy T-cell vaccine achieved positive results in a recently completed phase II clinical trial. Ragweed allergy is particularly common in America, where it affects approximately 25% of the population. Circassia's latest clinical results follow two earlier successful phase II studies with the company's T-cell vaccine against cat allergy. The company has three additional phase II trials ongoing, targeting house dust mite and cat allergies, and plans to initiate three further studies in the coming months, extending the portfolio into the field of grass allergy.

The results from Circassia's latest clinical study demonstrate that four doses of the ToleroMune T-cell vaccine greatly improved the allergic responses measured in the trial. The efficacy endpoints, which included the early phase skin response to a challenge dose of ragweed allergen, were measured both before and after the ragweed season. This response, which is commonly used by allergists to assess allergic status, showed a characteristic increase in the placebo group by the end of the ragweed season, resulting in values 37% higher than baseline. In contrast, the optimal ToleroMune T-cell vaccine regime reversed this seasonal increase and reduced it by a further 47% compared with the pre-ragweed season baseline. Throughout the study, the ToleroMune vaccines were safe and well tolerated, with a treatment-related safety profile similar to placebo.

"These highly encouraging clinical results further validate our unique T-cell vaccine approach to allergy therapy. Our ToleroMune technology has now shown its potential to address both ragweed and cat allergies, and we hope to extend this product range when we receive the results of our ongoing study in house dust mite allergy later this year," said Steve Harris, Circassia's CEO. "With three phase II studies now complete, our growing clinical database demonstrates the true potential of our ToleroMune T-cell vaccines. Unlike current immunotherapies, which require increasing doses over a number of months and several years of maintenance, ToleroMune therapy is short and simple, and minimises the risk of the severe and sometimes life-threatening side effects associated with many existing treatments."

Comments

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment
Post

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Study: MMR vaccine remains the most effective measure to prevent measles infection