Dupixent® Lawsuit

Patients using Dupixent® (dupilumab) may be more likely to develop a type of cancer known as cutaneous T-cell lymphoma. Dupixent lawsuits claim the manufacturers of this medication failed to adequately warn users about this serious side effect.

At Sokolove Law, our experienced attorneys may be able to help you seek compensation from a Dupixent lawsuit settlement. Call (800) 995-1212 now for a free case review.

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Dupixent Lawsuits for T-Cell Lymphoma

Dupixent is an injectable medication used to treat atopic dermatitis (eczema), asthma, and other conditions caused by type 2 inflammation.

However, this medication has been linked to an increased risk of cutaneous T-cell lymphoma (CTCL), which is a rare form of non-Hodgkin lymphoma that causes a growth of cells in the skin. Affected patients may be able to take legal action.

Dupixent Lawsuits at a Glance

  • Patients treated with Dupixent may be more likely to develop cutaneous T-cell lymphoma.
  • Manufacturers Sanofi and Regeneron Pharmaceuticals, Inc. reportedly failed to warn users about this potential side effect.
  • Because CTCL often resembles eczema, the lack of warnings may have delayed cancer diagnoses for some patients, giving the disease more time to progress.
  • In some cases, Dupixent may also accelerate or worsen CTCL, as noted in the Journal of the American Academy of Dermatology.

Dupixent users with eczema have a 4.59× higher relative risk of developing CTCL compared to non-users, according to Dermatologic Therapy.

At Sokolove Law, we’ve secured over $1.6 Billion for patients harmed by dangerous drugs and medical devices. Let our Duxpixent lawsuit attorneys fight for you.

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We’ve helped thousands of families hold powerful pharmaceutical companies accountable. Find out if you may be able to file a Dupixent lawsuit.

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Understanding the Link Between Dupixent and Lymphoma

In 2017, Dupixent was first approved by the U.S. Food & Drug Administration for eczema. However, since that time, there have been dozens of cases of cutaneous T-cell lymphoma reported in patients after treatment.

This drug alters pathways in the immune system, which may contribute to the development of T-cell lymphoma or accelerate an existing but undiagnosed lymphoma.

Types of CTCL that may be linked to Dupixent include: 

  • Mycosis fungoides: This is the most common type of CTCL. It grows slowly and mainly affects the skin, often causing a scaly rash or raised bumps.
  • Sezary syndrome: This less common but more aggressive form of CTCL affects both the skin and the blood. It can cause a red rash to form over the whole body.

Dupixent lawsuits claim that since T-cell lymphoma isn’t mentioned on the Dupixent warning label, patients may have mistaken early signs of CTCL for eczema and continued with the treatment, allowing the cancer to advance unchecked.

“Recent reports have linked dupilumab with exacerbating symptoms and accelerated disease progression of cutaneous T-cell lymphoma (CTCL).”
– Cureus Journal of Medical Sciences 

Although CTCL typically develops in older adults, studies suggest that patients treated with Dupixent are developing this cancer at a younger age. The majority of users who develop CTCL are diagnosed within a year of starting Dupixent, according to Dermatologic Therapy.

Who Can File a Lawsuit Against Dupixent?

Currently, over 1 million patients across the globe are being treated with Dupixent. However, the manufacturers of this medication may have failed to warn users about the risk of cancer, leading some patients to take legal action.

You may be able to file a Dupixent lawsuit if you or a loved one: 

  • Used Dupixent (dupilumab)
  • Was later diagnosed with cancer

It’s important to act quickly. Each state has a law called the statute of limitations, which sets a deadline for how long you have to take legal action. Once this deadline passes, you may lose your right to file a lawsuit.

Call (800) 995-1212 now to find out if you may be able to seek compensation from a Dupixent lawsuit. It costs nothing to speak with us.

How to File a Dupixent Lymphoma Lawsuit

At Sokolove Law, our team believes you shouldn’t have to suffer because of a pharmaceutical company’s negligence.

We can file a Dupixent lymphoma lawsuit on your behalf and fight for the compensation you deserve, all while allowing you to focus on your health and well-being.

Our Duxipent lawyers can handle every step of the process for you, including:

  • Providing a free case review to determine your eligibility to file a claim
  • Gathering evidence like medical records and expert opinions to build a strong case linking your Dupixent use to lymphoma
  • Filing your Dupixent lawsuit before any legal deadlines
  • Negotiating a settlement with the defendant(s), so you can receive compensation as quickly as possible
  • Presenting your case in court if a settlement isn’t reached and fighting for a trial verdict

By filing a Dupixent lymphoma lawsuit, you can pursue compensation for your medical bills, lost wages, and other damages related to your cancer diagnosis.

Get Help from Our Dupixent Lawsuit Lawyers

Patients trust that the medications they’re prescribed are safe. However, some Dupixent users have developed T-cell lymphoma, a risk they were never warned about.

At Sokolove Law, we can help you hold the manufacturers of this medication accountable for placing their profits over the health and well-being of patients.

Our Dupixent lawsuit lawyers have:

  • Over 45 years of experience
  • No upfront costs or hourly fees
  • The ability to help families in all 50 states
  • More than $1.6 Billion total in past results for clients harmed by dangerous drugs and medical devices

Call (800) 995-1212 now or fill out our contact form to get started with a free, no-obligation case review.

Dupixent Lymphoma Risk FAQs

What is the lawsuit against Dupixent?

In 2025, Dupixent lawsuits allege this medication may increase the risk of cutaneous T-cell lymphoma (CTCL), yet manufacturers failed to warn patients about this potential side effect.

Because CTCL can look similar to eczema, patients may have been unaware they had cancer, leading to delayed diagnosis and allowing the disease to progress in some cases.

Those affected may be able to take legal action and pursue compensation. Find out if you may qualify for a Dupixent lawsuit now — for free.

Who makes Dupixent?

Dupixent is manufactured by Sanofi and Regeneron Pharmaceuticals, Inc. The two companies operate under a global collaboration agreement and are continuing to test Dupixent for new uses.

Can Dupixent cause lymphoma​?

Potentially. Multiple studies have found that patients taking Dupixent are more likely to develop cutaneous T-cell lymphoma, a type of non-Hodgkin lymphoma that occurs when T-cells (white blood cells) become cancerous and accumulate in the skin.

Researchers have also found that Dupixent may accelerate or worsen the progression of undiagnosed CTCL, leading to faster disease advancement.

Is there a Dupixent class action lawsuit?

Currently, lawsuits are being filed individually, rather than as a Dupixent class action lawsuit. Each case focuses on the specific circumstances of the patient affected, which can help ensure that compensation reflects individual medical costs, pain and suffering, and more.

In a potential Dupixent class action lawsuit, all cases would be grouped together and resolved as a single claim, with any settlement or verdict divided among all plaintiffs equally.

How much does a Dupixent attorney charge?

At Sokolove Law, there are no upfront costs or hourly fees to work with our Dupixent attorneys. We operate on a contingency-fee basis, which means you pay nothing unless we secure compensation on your behalf.

Call (800) 995-1212 now to see if our Dupixent attorneys may be able to fight for the justice you deserve.

  1. Cleveland Clinic. “Mycosis Fungoides.” Retrieved from: https://my.clevelandclinic.org/health/diseases/21827-mycosis-fungoides.
  2. Cureus. “Cutaneous T-cell Lymphoma Progression: A Potential Dupilumab Pitfall.” Retrieved from: https://www.cureus.com/articles/164660-cutaneous-t-cell-lymphoma-progression-a-potential-dupilumab-pitfall.
  3. Dermatologic Therapy. “Increased Risk of Cutaneous T-Cell Lymphoma Development after Dupilumab Use for Atopic Dermatitis.” Retrieved from: https://onlinelibrary.wiley.com/doi/10.1155/2024/9924306.
  4. Dupixent. “DISCOVER WHAT’S POSSIBLE WITH DUPIXENT.” Retrieved from: https://www.dupixent.com/.
  5. Journal of the American Academy of Dermatology. “Acceleration of cutaneous T-cell lymphoma following dupilumab administration.” Retrieved from: https://www.jaadcasereports.org/article/S2352-5126(20)30857-2/fulltext.
  6. Journal of the American Academy of Dermatology. “Diagnosis of cutaneous T-cell lymphoma following exposure to biologic agents for atopic dermatitis: A retrospective cohort study from a single tertiary cancer center.” Retrieved from: https://www.jaad.org/article/S0190-9622(25)00188-4/abstract.