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Bay Area 3-Year-Old Beats Rare Cancer After Trial
13 Nov
Summary
- A 3-year-old boy is in remission from a rare blood cancer after a clinical trial.
- Lennox Pieraldi was diagnosed at 8 months old with Langerhans cell histiocytosis.
- A UCSF clinical trial using targeted medication led to a year in remission.

A young child from the Bay Area is marking a significant milestone, celebrating one year in remission from a rare blood cancer. Lennox Pieraldi was just 8 months old when doctors diagnosed him with Langerhans cell histiocytosis (LCH), a condition affecting immune cells and potentially forming tumors.
Lennox's initial treatments, including chemotherapy and steroids, were not effective. His family then sought care at UC San Francisco, where he participated in a 12-month clinical trial. This trial involved a weekly medication specifically designed to target the genetic mutation driving his LCH.
Dr. Russell Valle of UCSF explained that this targeted approach aims to eliminate cancer cells while minimizing harm to healthy ones. This success story highlights the potential of clinical trials for patients with relapsed or resistant diseases.
Now a year into remission, Lennox is enjoying typical childhood activities, including starting preschool and going on playdates. His family, who were honored by Blood Cancer United, hopes to raise awareness and support for those affected by blood cancers, emphasizing the power of togetherness in overcoming adversity.