New Study Reveals What Childhood Chemo Quietly Does to Kids' DNA
Summary
Scientists found that chemotherapy drugs using platinum, given to children with cancer, can cause many DNA changes in healthy cells. This may help explain some long-term health problems seen in survivors, especially in the liver.Key Facts
- The study looked at healthy tissues from children treated with platinum-based chemo drugs like cisplatin and carboplatin.
- Platinum chemo caused a big increase in DNA mutations in many organs and blood cells, aging tissues genetically.
- Researchers used a sensitive method called NanoSeq to detect subtle DNA changes missed by usual tests.
- A unique DNA damage pattern named "SBSA" was found only in liver tissue, not in blood or other organs.
- Platinum exposure increased liver mutations about 12 times compared to untreated children.
- Even small exposure, such as one cycle of carboplatin, increased DNA mutations significantly.
- Many mutations linked to cancer genes were found, but their presence does not mean cancer will develop.
- Platinum chemo remains important and effective for treating childhood cancer despite these findings.
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