Important: The Tepezza litigation is often described online as a “class action lawsuit,” but that description is not technically accurate. The current litigation is a multidistrict litigation (MDL) involving individual lawsuits alleging hearing loss and tinnitus after Tepezza treatment. There is currently no publicly announced nationwide class-action settlement or approved settlement fund for these claims.
Tepezza, also known by its generic name teprotumumab, is a prescription medicine used to treat thyroid eye disease (TED).
Patients who filed lawsuits against Horizon Therapeutics USA, Inc. allege that Tepezza caused or contributed to hearing-related injuries, including hearing loss and tinnitus. Some plaintiffs also allege that Horizon failed to adequately warn patients and doctors about the potential risk and that the drug was defectively designed.
Horizon has disputed the claims.
The lawsuits have been centralized in federal court as In re: Tepezza Marketing, Sales Practices, and Products Liability Litigation, MDL No. 3079, before U.S. District Judge Thomas M. Durkin in the Northern District of Illinois. The Judicial Panel on Multidistrict Litigation ordered the cases centralized in 2023 to make pretrial proceedings more efficient.
Is There a Tepezza Class Action Lawsuit?
No, not in the traditional class-action sense.
This distinction is important for people searching for a “Tepezza class action.”
The current litigation is an MDL, not one class action in which every Tepezza patient automatically becomes a class member.
In an MDL, lawsuits involving similar factual and legal questions are coordinated before one federal judge. Individual plaintiffs generally retain their own claims and may have their cases proceed separately.
As of July 2026, available litigation reports indicate that approximately 277 Tepezza cases were pending in the MDL. No global settlement had been publicly announced.
What Injuries Are Alleged?
The central allegations involve hearing-related problems following Tepezza treatment.
Plaintiffs have reported or alleged conditions such as:
- Hearing loss
- Permanent hearing impairment
- Tinnitus
- Difficulty understanding speech
- Ear-related symptoms
- Problems affecting communication and quality of life
The lawsuits do not establish that every person who takes Tepezza will experience these problems.
The litigation concerns individual claims about alleged injuries and whether the manufacturer should be legally responsible.
Why Are Patients Suing Horizon Therapeutics?
The lawsuits generally raise several theories of liability.
Some plaintiffs allege that Horizon:
- Failed to provide adequate warnings about hearing-related risks
- Did not adequately communicate the potential severity or permanence of hearing problems
- Manufactured a product that was defectively designed
- Misrepresented or inadequately disclosed information about the drug’s risks
These are allegations made by plaintiffs, not findings that Horizon has been found liable.
A federal judge has allowed certain pre-approval design-defect claims to proceed against Horizon, while also dismissing post-approval design-defect claims in the particular case considered by the court.
What Did the Court Decide About Tepezza Design Claims?
One important ruling came in November 2023.
Horizon argued that certain design-defect claims were preempted by federal law because Tepezza had received FDA approval.
Judge Thomas M. Durkin rejected Horizon’s preemption argument as to the plaintiff’s pre-approval design-defect claims.
The court specifically stated that the pre-approval design-defect claims were not preempted on that ground. However, the ruling did not determine that Horizon was liable or that the plaintiff would ultimately win the case.
This distinction is important when discussing the Tepezza lawsuit because a ruling allowing a claim to proceed is not the same as a verdict for the plaintiff.
Tepezza Lawsuit Settlement: Has There Been One?
No publicly announced global Tepezza settlement has been reported as of the latest 2026 information reviewed.
This means there is currently no verified:
- Tepezza class action settlement amount
- Guaranteed Tepezza payout
- Court-approved nationwide Tepezza settlement fund
- Standard payment per plaintiff
Reports updated in 2026 indicate that the litigation remains ongoing and that no court-approved settlement has been announced.
Therefore, websites promising a specific Tepezza settlement amount should be approached carefully.
How Much Could a Tepezza Lawsuit Pay?
There is no established Tepezza settlement amount at this time.
You may find websites estimating possible compensation, sometimes mentioning amounts ranging from tens of thousands of dollars to more than $1 million.
Those figures should not be treated as actual settlement amounts.
Until cases are resolved through settlements or verdicts, there is no reliable way to say that every Tepezza plaintiff will receive a particular amount.
Potential damages in an individual case could depend on factors such as:
| Factor | Why It Matters |
| Severity of hearing loss | More serious injuries may result in greater damages |
| Permanence | Permanent impairment can affect the value of a claim |
| Tinnitus | Severity and duration may matter |
| Medical expenses | Treatment and hearing-related costs may be considered |
| Lost income | Work-related losses may be relevant |
| Effect on daily life | Quality-of-life effects can affect damages |
| Medical evidence | Helps establish injury and causation |
| Timing | Relationship between Tepezza treatment and symptoms may matter |
These factors do not guarantee a particular result.
When Will the Tepezza Lawsuit Be Settled?
There is no confirmed settlement date.
Mass tort litigation can take years because the parties may need to complete:
- Medical-record review
- Expert discovery
- Depositions
- Scientific research
- Case-specific discovery
- Motions
- Bellwether trials
- Settlement negotiations
Bellwether cases can be particularly important because they give both sides information about how juries may respond to evidence.
However, a bellwether verdict would not automatically determine the outcome of every other Tepezza lawsuit.
What Are Bellwether Trials?
Bellwether trials are selected cases used to help the parties and court understand the strengths and weaknesses of the larger litigation.
They can provide information about:
- Medical causation
- Evidence regarding hearing loss
- Alleged warnings
- Expert testimony
- Defendant arguments
- Plaintiff arguments
- Potential jury reactions
The results are generally not automatically binding on other plaintiffs in an MDL.
Reports available in 2026 indicate that the Tepezza litigation is moving toward its first bellwether proceedings, but the litigation has not produced a global settlement.
Who May Have a Tepezza Lawsuit?
A potential claim could involve someone who:
- Was prescribed or received Tepezza for thyroid eye disease.
- Developed hearing-related symptoms.
- Has medical evidence documenting those symptoms.
- Can establish a plausible connection between the treatment and the injury.
- Meets the applicable legal requirements and filing deadlines.
Not every person who used Tepezza will necessarily have a legal claim.
A lawyer evaluating a potential case would typically want information about the patient’s Tepezza treatment, hearing history and medical records.
What Evidence Can Be Important?
Medical documentation can be particularly important in pharmaceutical litigation.
Potentially relevant records include:
- Tepezza infusion records
- Dates of treatment
- Audiograms
- Hearing tests
- ENT records
- Medical records
- Diagnosis records
- Prescription information
- Treatment history
- Documentation of tinnitus
- Hearing-aid records
- Communications with healthcare providers
A person’s hearing condition before Tepezza treatment can also be important when evaluating causation.
Can Tepezza Hearing Loss Be Permanent?
The lawsuits allege that some patients experienced permanent hearing loss or tinnitus.
However, individual outcomes vary.
A person who experienced hearing symptoms after Tepezza should discuss those symptoms with a qualified healthcare professional. The existence of litigation does not establish that Tepezza caused an individual’s particular hearing condition.
What Should Tepezza Patients Do?
If you believe you experienced hearing problems after Tepezza, keep copies of your medical records and treatment information.
Useful documents may include:
- Infusion dates
- Audiograms before treatment
- Audiograms after treatment
- ENT evaluations
- Hearing-aid information
- Medical bills
- Medication records
- Physician notes
Do not stop or change prescribed treatment solely because of information about litigation. Questions about ongoing medical treatment should be discussed with your healthcare provider.
Is There a Tepezza FDA Warning About Hearing Loss?
The regulatory history of Tepezza and its labeling is an important part of the litigation.
The court record notes that the Tepezza label contained information concerning hearing impairment beginning with FDA approval in 2020, while plaintiffs argue that the warnings were inadequate.
This is one reason the warning-related claims are legally complicated.
The existence of a warning does not automatically eliminate a failure-to-warn claim, nor does an allegation of inadequate warning prove that the manufacturer violated the law.
Who Manufactures Tepezza?
Tepezza was developed and commercialized by Horizon Therapeutics.
Horizon was acquired by Amgen in 2023.
Because of corporate ownership changes, people searching online may see references to both Horizon and Amgen in connection with Tepezza.
The current MDL filings identify Horizon Therapeutics USA, Inc. as a defendant in the litigation.
Is Tepezza Part of an MDL?
Yes.
The litigation is designated MDL No. 3079.
The official federal judicial panel transferred and centralized related Tepezza lawsuits in the Northern District of Illinois in 2023. The panel said centralization would help address common factual questions concerning alleged hearing loss and tinnitus associated with Tepezza.
Tepezza Lawsuit vs. Class Action
These terms are often confused.
| Tepezza Litigation | Traditional Class Action |
| MDL | Class action |
| Individual lawsuits | One representative case for a defined class |
| Cases coordinated together | Class members generally represented collectively |
| Individual injuries remain important | Common class issues are central |
| No announced global settlement | Settlement may cover an entire certified class |
| Plaintiff’s individual claim remains relevant | Payment may follow a class settlement formula |
Therefore, calling the Tepezza litigation a “class action” is not technically correct.
A better SEO title can still target the phrase “Tepezza class action lawsuit”, but the article should clearly explain that the current litigation is an MDL.
Is There a Tepezza Lawsuit Settlement in 2026?
As of the latest information reviewed in 2026, there is no publicly announced global settlement resolving the Tepezza hearing-loss MDL. Reports indicate that hundreds of cases remain pending.
That means there is currently no official settlement amount that can be used to calculate what an individual plaintiff will receive.
Frequently Asked Questions
Is there a Tepezza class action lawsuit?
Not in the traditional class-action sense. The current cases are coordinated through an MDL involving individual lawsuits.
What is the Tepezza lawsuit about?
The lawsuits generally allege that Tepezza caused hearing loss and/or tinnitus and that Horizon failed to adequately warn about these risks.
Has Tepezza settled?
No global settlement has been publicly announced as of the latest 2026 information reviewed.
How much is the Tepezza settlement?
There is currently no established settlement amount.
How many Tepezza lawsuits are there?
Available July 2026 reporting indicates approximately 277 cases were pending in the MDL.
Can I file a Tepezza lawsuit for hearing loss?
Potential eligibility depends on your medical history, Tepezza treatment, hearing injury, causation evidence and applicable legal deadlines.
Does everyone who took Tepezza qualify?
No. Simply taking Tepezza does not automatically establish a legal claim.
What injuries are involved?
The litigation primarily concerns alleged hearing loss and tinnitus, including claims of permanent hearing impairment.
Has a jury awarded money in a Tepezza case?
There is currently no established nationwide payout based on a completed Tepezza bellwether trial.
When will Tepezza lawsuits be settled?
There is no confirmed settlement date.
Bottom Line
The Tepezza litigation is not currently a traditional class action. It is an MDL involving individual claims alleging hearing loss and tinnitus after Tepezza treatment. As of 2026, no global settlement or standard payout amount has been publicly announced, so claims about a guaranteed Tepezza settlement amount should be treated cautiously.