Dupixent Lawsuits: Allegations, Safety Steps and Legal Options

• Dupixent (dupilumab) is a prescription drug that is used to treat asthma, chronic rhinosinusitis with nasal polyps, eosinophilic esophagitis, moderate to severe eczema, prurigo nodularis and some cases of chronic obstructive pulmonary disease.

• People filing Dupixent lawsuits claim they developed cutaneous T-cell lymphoma, a type of cancer, after taking dupilumab. Lawsuits accuse the manufacturer of failing to warn them and their doctors about the risk of CTCL.

• A 2024 study suggests people with eczema who take Dupixent may face a roughly four-times higher chance of developing CTCL than people not on the drug. Most cases appeared over a year after starting the drug.

• If you develop CTCL after taking Dupixent:
  • Follow your doctor’s advice and instructions.
  • Notify the FDA’s MedWatch program.
  • Gather medical and financial records related to your diagnosis and treatment.
  • Contact a lawyer for a free legal case review to see if you’re eligible for a Dupixent lawsuit. Consumer Notice can help you find an attorney best suited to your case.

Dupixent lawsuits claim that its makers, Regeneron and Sanofi Genzyme, failed to warn patients about a possible link to cutaneous T-cell lymphoma (CTCL). This is a rare type of cancer that starts in your white blood cells and impacts your skin.

Some people report being diagnosed with CTCL or having their condition worsen after using Dupixent for several months. Early signs of CTCL can be mistaken for eczema, delaying proper treatment.

Recent studies indicate that people with eczema who take Dupixent may face a higher risk of CTCL. Other skin and blood cancers have not shown the same increase in risks.

More research is needed to understand the relationship between Dupixent and CTCL. Meanwhile, Dupixent is still on the market. Regulators are reviewing CTCL safety signals, but there was no recall as of late 2025.​

If you are taking Dupixent and have concerns about possible cancer risks, don’t stop taking the drug without talking to your doctor first. Stopping treatment without a doctor’s advice can lead to other medical issues. Schedule an appointment immediately.

Additionally, gather any receipts and medical records concerning your Dupixent treatment in case you file a Dupixent lawsuit.

Talk to Your Doctor About Dupixent

If you’re worried about Dupixent’s possible cancer risk, talk to your doctor. Bring notes detailing your symptoms and when they started. Also, ask how the medication’s benefits and risks apply to your specific situation.

Report Dupixent Side Effects to FDA MedWatch

If you experience unusual or serious side effects while taking Dupixent, you can report them to the FDA’s MedWatch program. These reports help the FDA track safety problems, spot patterns and ensure medicines remain as safe as possible for everyone.

Gather Your Dupixent Pharmacy and Medical Records

If you’re considering a Dupixent lawsuit, gather your pharmacy and medical records to help your attorney understand your treatment history and when symptoms began. These documents show what you were prescribed, how long you took the drug and when any CTCL signs appeared.

Clear records make it easier to review your case and spot important details.

Your eligibility to file a Dupixent lawsuit depends on your medical diagnosis, how long you took the medication and reviews of your individual circumstances.

If you think you may qualify, Consumer Notice can connect you to an attorney suited to your situation. Consumer Notice partners with leading law firms nationwide that specialize in pharmaceutical lawsuits.

Your case review is free of charge, and you are under no obligation to file a lawsuit or hire an attorney.

Dupixent Lawsuit Eligibility Factors

You may be eligible to file a Dupixent lawsuit if you used dupilumab and were later diagnosed with a CTCL. Lawyers look for a clear connection between your drug use and your diagnosis.

Your age, your other health conditions and where you live may affect your eligibility for a Dupixent lawsuit.

Evidence Lawyers Review in Dupixent Cases

When reviewing a potential Dupixent lawsuit, lawyers look for clear evidence showing your treatment history, when your symptoms began and how the condition affected your life. These records help them understand whether Dupixent may be linked to your CTCL diagnosis and what damages you may have experienced.

A lawyer may ask you detailed questions about your symptoms, when you started Dupixent, when symptoms appeared and their daily impact on your life. These questions and the records are important because they help confirm your diagnosis, connect it to your medication history and determine the strength of your case.

There is currently no class action lawsuit or multidistrict litigation (MDL) for Dupixent‑related CTCL cases, so patients are filing individual lawsuits.

In a class action, many people share a single case and settlement amount. In an MDL, similar cases are consolidated into a single litigation to make the legal process more efficient. However, your settlement depends on your medical history and losses.

As the number of Dupixent lawsuits grows, they might be combined in an MDL.

What a Free Dupixent Case Review Covers

A free case review is a short, no-cost call where a legal team assesses your eligibility to file a Dupixent lawsuit. You will be asked about your Dupixent use, CTCL or other diagnoses, symptoms and the timing of these factors.

A reviewer will explain which records they may need, like pathology, dermatology and pharmacy files, and provide a rough outline of the next steps and timelines.

Your information is kept confidential. There is no cost to you, and you are under no obligation to hire an attorney. If you choose to move forward with a lawsuit, lawyers in this type of litigation typically work on a contingency fee, meaning they only get paid if you receive money.

Dupixent lawsuits are still in the early stages. Consumer Notice is unaware of any settlements at this time. Your potential settlement amount would depend on your individual case.

If Dupixent lawsuits are consolidated into an MDL, it could result in a large settlement resolving all the cases against the manufacturers. In an MDL, several cases would be chosen as bellwether, or test, cases. These cases may determine whether a settlement is reached.

What Influences Potential Dupixent Settlement Value

Settlement amounts in Dupixent lawsuits will depend on several factors. In an MDL settlement, your payout may be ranked in a tier system, with low, medium and high amounts based on the severity of your injury.

You typically have to repay your health insurance, Medicare or Medicaid liens from any settlement. These paybacks reduce the final amount you actually take home.