Ladera Ranch residents are demanding an investigation into potential environmental hazards after six children in the community were diagnosed with Ewing sarcoma, a rare bone cancer. While no official link to local pesticide use has been established, public health agencies are now reviewing the cases following community pressure.
Rare Cancer Diagnoses Spark Community Alarm in Ladera Ranch
Families in the master-planned Orange County community of Ladera Ranch are seeking answers following a cluster of rare pediatric cancer diagnoses. According to NBC Los Angeles, at least six children in the area have been diagnosed with Ewing sarcoma, a very rare cancer affecting bones and soft tissues. The American Cancer Society reports that only about 200 to 240 children are diagnosed with this condition annually across the United States, as noted by VINnews.
The community’s concern reached a breaking point in March 2026, when 17-year-old Brody Matteson died from the disease. Seems very, very out of the ordinary for our community to have that many cases here. And something must be causing it, right?
Matteson told NBC LA.
Other parents, such as Jessica Keetch, have also spoken out about the toll these diagnoses have taken on their families. Keetch’s 18-year-old daughter, Haven, had her right foot amputated after being diagnosed with a different rare cancer, synovial sarcoma, which affects about 1,000 people a year in the country. I think people need to listen and wake up and realize something is happening to our children,
Keetch said. This is not random.
She added, I’ll always remember the day. I’ll cry thinking about it because it’s the worst day for a parent you can ever have.
Residents Question Pesticide Application Practices
As families search for potential environmental triggers, attention has shifted toward the frequent use of synthetic pesticides and herbicides in local parks and common areas. Local resident and attorney Jackie Frentz, who has been reviewing public records and pesticide application documents, reported that 17 different types of pesticides and herbicides were used throughout the community during June 2026 alone, with spraying occurring almost daily, according to VINnews.
For more on this story, see Rare Cancer Cluster Investigated in Southern California.
The concern has expanded beyond the six identified Ewing sarcoma cases. After Brody Matteson’s death, his mother, Megan Matteson, posted in the community’s Facebook group asking residents to share whether members of their families had been diagnosed with cancer. According to residents, 62 responses were received within a short period from people reporting cancer cases in their families. Some residents also reported what they viewed as an unusual number of pets that had developed cancer. While these reports do not constitute proof of a cancer cluster and have not been independently verified, they have prompted residents to begin their own investigation.
Dr. Bruce Blumberg, a professor of developmental and cell biology at the University of California, Irvine, believes there is a link between these cancers and pesticides. He noted that there is data regarding the potential risks, though he acknowledged that there is no official cause-and-effect data linking pesticides to these specific types of cancers.
Ladera Ranch Maintenance Corporation Response
The Ladera Ranch Maintenance Corporation has publicly acknowledged the community’s distress. In a statement to People, the organization said they take these concerns seriously
and will follow guidance provided by the appropriate health and regulatory authorities.
Residents have expressed frustration regarding the communication of chemical applications. According to reports, notices regarding the use of synthetic substances are often only posted on digital platforms that remain difficult for the average citizen to access. Families are now questioning the lack of willingness to transition toward organic methods, despite the multiple concerns raised. Residents are also calling for the landscaping practices to be evaluated under the stricter protective standards as outlined by the U.S. Environmental Protection Agency.
Families in Ladera Ranch are encouraged to consult with qualified medical professionals regarding specific health concerns. Residents seeking further information or wishing to report health data are advised to contact their local health agencies to ensure their findings are part of any formal review process.
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