Paris and Tarrytown, N.Y. September 15, 2022. The Lancet has published positive results from a Phase 3 Dupixent^® (dupilumab) trial in children aged 6 months to 5 years with uncontrolled moderate-to-severe atopic dermatitis. These data were the basis for the U.S. Food and Drug Administration (FDA) approval of Dupixent in June 2022 and for a regulatory submission currently under review by the European Medicines Agency.

Amy S. Paller, M.D.
Walter J. Hamlin Professor and Chair of Dermatology, Professor of Pediatrics, Northwestern University Feinberg School of Medicine
“The Lancet’s publication of these Phase 3 results is a testament to the significance of the data showing dupilumab can alleviate the multidimensional burden that moderate-to-severe atopic dermatitis places on infants, toddlers and their families. By addressing the key inflammatory pathway driving atopic dermatitis, the trial demonstrated that dupilumab not only addressed debilitating symptoms like persistent itch and skin lesions, but also meaningfully improved sleep and reduced pain—two aspects of daily life that are critical for any child’s development and well-being.”

Data from this trial showed that adding Dupixent to low-potency topical corticosteroids (TCS) significantly improved skin clearance and reduced overall disease severity and itch compared to TCS alone (placebo) at 16 weeks. Additionally, Dupixent patients experienced significant improvement in measures of sleep quality and skin pain, as well as patient- or caregiver-reported outcomes and health-related quality of life. A substantially lower proportion of Dupixent patients needed rescue medications, compared to those on placebo.

Safety results through 16 weeks were similar to the safety profile in patients 6 years and older with atopic dermatitis. Adverse events that were more commonly observed with Dupixent (≥5%) included conjunctivitis (5% Dupixent, 0% placebo), herpes viral infections (6% Dupixent, 5% placebo), molluscum contagiosum (5% Dupixent, 3% placebo), rhinorrhea (5% Dupixent, 1% placebo) and dental caries (5% Dupixent, 0% placebo).

The safety and efficacy of Dupixent in children 6 months to 5 years of age with uncontrolled atopic dermatitis has not been fully evaluated by any regulatory authority outside the U.S.

About Atopic Dermatitis
Atopic dermatitis is a chronic type 2 inflammatory skin disease. Eighty-five to ninety percent of patients first develop symptoms before 5 years of age, which can often continue through adulthood. Symptoms include intense, persistent itch and skin lesions that cover much of the body, resulting in skin dryness, cracking, pain, redness or darkening, and crusting and oozing. In the U.S., more than 75,000 children aged 5 years and younger have uncontrolled moderate-to-severe disease and are most in need of new treatment options. Moderate-to-severe atopic dermatitis may also significantly impact the quality of life of a young child and their caregivers. Current treatment options in this age group are primarily topical steroids, which can be associated with safety risks and may impair growth when used long-term.

About the Dupixent Trial
The Phase 3 randomized, double-blind, placebo-controlled trial evaluated the efficacy and safety of Dupixent added to standard-of-care low-potency TCS compared to low-potency TCS alone in 162 children aged 6 months to 5 years with uncontrolled moderate-to-severe atopic dermatitis. Patients treated with Dupixent received either 200 mg or 300 mg (based on weight) every four weeks.

The primary endpoints assessed the proportion of patients achieving an Investigator's Global Assessment (IGA) score of 0 (clear) or 1 (almost clear) and at least a 75% improvement in Eczema Area and Severity Index (EASI-75) at week 16.

Secondary endpoints further assessed disease measures and quality of life. Disease measures included additional EASI outcomes, itch reduction, percent of body surface area affected, skin pain, disease severity as measured by the Patient Oriented Eczema Measure, as well as SCORing Atopic Dermatitis measuring a combined assessment of disease area and severity, itch and sleep. Quality of life measures were assessed for children (by Children’s Dermatology Life Quality Index for children aged 4 to 17 years and Infants’ Dermatitis Quality of Life Index for children less than 4 years of age) and families (by the Dermatitis Family Impact questionnaire), as well as sleep quality.

Children who completed the trial were eligible to enroll in an open-label extension to assess the safety and efficacy of long-term treatment with Dupixent in this age group.

About Dupixent
Dupixent is a fully human monoclonal antibody that inhibits the signaling of the interleukin-4 (IL-4) and interleukin-13 (IL-13) pathways and is not an immunosuppressant. The Dupixent development program has shown significant clinical benefit and a decrease in type 2 inflammation in Phase 3 trials, establishing that IL-4 and IL-13 are key and central drivers of the type 2 inflammation that plays a major role in multiple related and often co-morbid diseases. These diseases include approved indications for Dupixent such as asthma, atopic dermatitis, chronic rhinosinusitis with nasal polyposis (CRSwNP) and eosinophilic esophagitis (EoE), as well as investigational diseases such as prurigo nodularis.

Dupixent has received regulatory approvals around the world for use in certain patients with atopic dermatitis, asthma, CRSwNP or EoE in different age populations. Dupixent is currently approved across these indications in the U.S. and for one or more of these indications in more than 60 countries, including in the European Union and Japan. More than 500,000 patients have been treated with Dupixent globally.

Dupilumab Development Program
Dupilumab is being jointly developed by Sanofi and Regeneron under a global collaboration agreement. To date, dupilumab has been studied across more than 60 clinical trials involving more than 10,000 patients with various chronic diseases driven in part by type 2 inflammation.

In addition to the currently approved indications, Sanofi and Regeneron are studying dupilumab in a broad range of diseases driven by type 2 inflammation or other allergic processes in Phase 3 trials, including prurigo nodularis, pediatric eosinophilic esophagitis, hand and foot atopic dermatitis, chronic inducible urticaria-cold, chronic spontaneous urticaria, chronic pruritis of unknown origin, chronic obstructive pulmonary disease with evidence of type 2 inflammation, chronic rhinosinusitis without nasal polyposis, allergic fungal rhinosinusitis, allergic bronchopulmonary aspergillosis and bullous pemphigoid. These potential uses of dupilumab are currently under clinical investigation, and the safety and efficacy in these conditions have not been fully evaluated by any regulatory authority.

About Sanofi
We are an innovative global healthcare company, driven by one purpose: we chase the miracles of science to improve people’s lives. Our team, across some 100 countries, is dedicated to transforming the practice of medicine by working to turn the impossible into the possible. We provide potentially life-changing treatment options and life-saving vaccine protection to millions of people globally, while putting sustainability and social responsibility at the center of our ambitions.
Sanofi is listed on EURONEXT: SAN and NASDAQ: SNY

About Regeneron
Regeneron is a leading biotechnology company that invents, develops and commercializes life-transforming medicines for people with serious diseases. Founded and led for nearly 35 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to nine FDA-approved treatments and numerous product candidates in development, almost all of which were homegrown in our laboratories. Our medicines and pipeline are designed to help patients with eye diseases, allergic and inflammatory diseases, cancer, cardiovascular and metabolic diseases, pain, hematologic conditions, infectious diseases and rare diseases.

Regeneron is accelerating and improving the traditional drug development process through our proprietary VelociSuite^® technologies, such as VelocImmune^®, which uses unique genetically humanized mice to produce optimized fully human antibodies and bispecific antibodies, and through ambitious research initiatives such as the Regeneron Genetics Center, which is conducting one of the largest genetics sequencing efforts in the world.

For more information, please visit www.Regeneron.com or follow @Regeneron on Twitter.

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