We are pursuing damages claims relating to Regeneron Pharmaceuticals’ and Sanofi-Aventis’ prescription drug Dupixent® (also known as “dupilumab”) in connection with its development, testing, labeling, packaging, promoting, advertising, marketing, distribution, and sales.

A biologic medication injected for the treatment of multiple conditions, including atopic dermatitis, asthma, and other inflammatory diseases of the skin and respiratory tract in adult and child patients, the pending lawsuit alleges that Dupixent caused the development and/or aggravation of T-cell lymphoma in some patients. (T-cell lymphoma is a rare type of cancer that affects white blood cells called T cells, or T lymphocytes.).

Numerous case reports and scientific studies have established a link between Dupixent and T-cell lymphoma, including CTCL and PTCL, including providing evidence that it causes and/or accelerates progression of the lymphoma. As the filed lawsuit details, defendants allegedly failed to warn, instruct, advise, educate, or otherwise inform Dupixent users and prescribers about the risk of development and/or exacerbation of CTCL and PTCL.

If you or a family member have been treated with Dupixent (dupilumab) and experienced onset or aggravation of T-cell lymphoma, including CTCL and PTCL, we urge you to use the form below to speak with a prescription drug injury lawyer at Lieff Cabraser today about your injury case and potential recovery. Recognized twice in the last three years by Law360 with a “Practice Group of the Year” award for product liability work, Lieff Cabraser’s injury lawyers can help you learn about your rights and potential recovery.

The plaintiff-side-only law firm Lieff Cabraser Heimann & Bernstein has litigated and resolved thousands of individual lawsuits and class and group actions, including some of the most important prescription drug injury cases in the United States over the past five decades, including in the national opioid fraud and addiction litigation. We have assisted our clients in recovering over $133 billion in verdicts and settlements, and have been repeatedly named product liability (including drug injury) practice group of the year by publications including Law360, the National Law Journal, The California Daily Journal, the New York Law Journal, Best Lawyers, Benchmark, Legal500, and Chambers & Partners USA.

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