Roundup Cancer Lawsuit in Missouri

What Missouri residents should know

Missouri residents are not necessarily limited to filing only in Missouri state court. Many mass tort claims may be evaluated by national firms, filed in federal court, coordinated through MDL proceedings, or handled through another legal process.

State law may still matter for deadlines, damages, claim evaluation, and certain procedural issues.

What stands out about Roundup litigation in Missouri?

Missouri is central to Roundup litigation because St. Louis is Monsanto's historic home, and the city's 22nd Judicial Circuit is where Bayer's proposed $7.25 billion nationwide class settlement (King v. Monsanto) received preliminary approval on March 4, 2026, with a final approval hearing set for July 9, 2026.

Missouri courts have also produced major trial verdicts. In Anderson v. Monsanto (Cole County, November 2023), a jury awarded about $1.56 billion; the award was later reduced to $611 million and upheld by a Missouri appellate court in 2025.

A separate Missouri case, Durnell v. Monsanto, became the vehicle for the U.S. Supreme Court's review of whether federal pesticide law preempts state failure-to-warn claims, argued April 27, 2026 — a ruling that could reshape Roundup litigation nationwide. Federal Missouri cases are transferred into MDL No. 2741 in the Northern District of California.

Sources: King v. Monsanto preliminary approval order (Mar. 4, 2026); Drugwatch — Cole County $1.5B verdict (Nov. 2023); U.S. Supreme Court docket — Monsanto v. Durnell (No. 24-1068).

Possible eligibility factors

Missouri residents may want to speak with a lawyer if they used or were exposed to Roundup and glyphosate-based herbicide products and later experienced non-Hodgkin lymphoma.

• Use, prescription, employment, service, or exposure history.
• Medical diagnosis and treatment records.
• Approximate dates of use, exposure, diagnosis, and treatment.
• Information about prior conditions, alternative exposures, or other facts a lawyer may need to evaluate.

What records support Roundup claims in Missouri?

• Purchase receipts, product photos, farm, landscaping, groundskeeping, municipal, school, golf-course, or property-maintenance records.
• Records showing repeated glyphosate or Roundup use, mixing, spraying, application frequency, and exposure years.
• Oncology records, pathology reports, biopsy records, treatment history, and non-Hodgkin lymphoma subtype records.
• Prior claim forms, settlement paperwork, releases, opt-out documents, or law-firm communications if any exist.

What exposure and legal context matter in Missouri?

State residents may have encountered Roundup through agricultural use, residential use, landscaping, groundskeeping, parks, schools, golf courses, or similar settings.

Where are Missouri Roundup cases handled?

Living in Missouri does not necessarily mean the case will be filed only in Missouri. Claims may be evaluated by national firms, filed in federal court, coordinated through MDL proceedings, or handled through another legal process.

Federal courts in Missouri

• Eastern District of Missouri
• Western District of Missouri

What is the filing deadline for Roundup lawsuits in Missouri?

For a Missouri resident researching Roundup claims, the starting point is usually Missouri's general personal injury period: 5 years under Mo. Rev. Stat. § 516.120(4). That is only a starting point, not a final legal deadline for every person.

The real filing deadline can depend on diagnosis date, when the injury and possible cause were discovered, exposure location, wrongful-death issues, prior claim paperwork, and whether the case is filed directly, transferred to an MDL, or handled through another process.

Discovery-rule note: Missouri's period generally runs from when damage is sustained and capable of ascertainment, which can function like a discovery rule in latent-injury cases.

How long do Missouri residents have to file?

Missouri's personal injury statute of limitations applicable to product liability claims is 5 years (Mo. Rev. Stat. § 516.120(4)). Accrual timing, tolling, and repose periods can still change the real deadline in an individual case.

• Filing period: 5 years — Mo. Rev. Stat. § 516.120(4).
• Discovery rule: Missouri's period generally runs from when damage is sustained and capable of ascertainment, which can function like a discovery rule in latent-injury cases.

Because the controlling deadline depends on diagnosis date, discovery facts, exposure history, wrongful-death rules, and how the claim is filed, only a licensed attorney can confirm the deadline that applies to a specific situation. This page is general legal information, not legal advice.

What should Missouri residents ask a lawyer?

• What proof do you need of Roundup or glyphosate exposure and years of use?
• How do lymphoma subtype, diagnosis date, and oncology records affect review?
• Could prior settlement paperwork, releases, or opt-out documents affect my options?
• How do state filing deadlines apply to my diagnosis and discovery timeline?
• Would my claim be handled locally, nationally, or through the MDL?
• Are there upfront costs?