Dupixent 300 mg weekly significantly improved the ability to swallow and reduced eosinophils in the esophagus compared to placebo, reinforcing positive results from first Phase 3 trial
Eosinophilic esophagitis is a progressive disease that damages the esophagus and impairs the ability to swallow; 90% of trial participants had at least one coexisting type 2 inflammatory condition such as asthma or atopic dermatitis
Dupixent is the only biologic medicine to show positive, clinically meaningful Phase 3 results in these patients; regulatory filings planned for 2022
'This trial gives insight into how terrible this disease can be, with more than a third of patients having previously required invasive endoscopic dilations that can temporarily reduce symptoms but carry the risk of rupturing the esophagus,' said
EoE is a chronic and progressive type 2 inflammatory disease that damages the esophagus and prevents it from working properly. At times, swallowing the smallest quantity of food or taking a sip of water can be a painful and worrisome choking experience. Those with EoE live with anxiety and frustration from having a constantly evolving list of trigger foods to avoid. Dilation (physical expansion) of the esophagus, which is used to address narrowing, is often painful. In severe cases, a feeding tube is the only option to ensure proper caloric intake and weight gain. People with EoE may have poor quality of life and are more likely to experience depression, especially as they age, than people without EoE. In the
'The current standard of care for people with eosinophilic esophagitis may only provide limited relief of their symptoms. Efforts to develop a treatment that targets an underlying cause of the disease has eluded the field for some time, resulting in an incredible unmet need,'?said
In this trial, 80 patients were enrolled into a Dupixent 300 mg weekly treatment group and 79 patients were enrolled into the placebo group. The co-primary endpoints at 24 weeks assessed patient-reported measures of difficulty swallowing (change from baseline in the Dysphagia Symptom Questionnaire, or DSQ), and esophageal inflammation (proportion of patients achieving peak esophageal intraepithelial eosinophil count of ?6 eos/high power field [hpf]).
Patients treated with Dupixent 300 mg weekly experienced the following changes by week 24 compared to placebo: 64% reduction in disease symptoms from baseline compared to 41% for placebo (p=0.0008). Dupixent patients experienced a 23.78 point improvement on the 0-84 DSQ scale, compared to a 13.86 point improvement for placebo (p
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