science
Scientists Link Boy’s Brain Tumor to Gene Therapy Viruses
Doctors identified a link between a gene therapy treatment and a brain tumor in a young patient with a rare disease. The case is described as rare, with medical professionals stating that treatment risks must be weighed against benefits. The patient had previously undergone a stem cell transplant that failed before receiving the gene therapy.
May 13, 6:00 AM·1m read1 source
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Doctors have linked a boy's brain tumor to viruses used in a gene therapy he received, according to a report published on May 13, 2026. The finding comes from a case in which the patient, who was born with a life-threatening rare disease, developed a golf-ball-sized tumor on his brain that was discovered during a routine scan last year.
When the patient was 13 months old, a stem cell transplant failed. Physicians presented the family with two options: undergo a second transplant, which carried a 10% to 15% risk of death, or try a new and untested gene therapy. The family had observed the patient endure the first transplant, including an episode in which he could not breathe and required emergency intervention by nurses.
The family chose the gene therapy. Afterward, the patient reached developmental milestones, learned sign language, and taught himself to read. The tumor was identified last year.
The report states that the risks of such gene therapies need to be weighed against what can be profound benefits. Doctors described the case as a rare finding in which the tumor was connected to the viruses used in the treatment. The article notes that gene therapy remains an evolving area of medicine, with ongoing research into both its effectiveness and potential side effects.
No additional details were provided on the specific type of gene therapy or the patient's current status.
