Autoantibodies Linked to DNA Repair May Signal Early Childhood Cancer Risk
Researchers in Norway discovered that children who later develop cancer often produce autoantibodies targeting DNA-repair proteins, sometimes years before diagnosis.
Scientists from the University of Bergen examined specimens collected between 2014 and 2017 from 175 individuals with sarcoma or acute lymphoblastic leukemia, using resources such as the NoSarC Norwegian Sarcoma Study and the Norwegian Childhood Cancer Biobank. Compared with healthy donors, children aged two to 19 who later developed cancer showed a markedly higher presence of IgG autoantibodies against DNA-repair genes including RAD52, NUMA1, and MGMT.
Laboratory tests indicated that these antibodies can enter cells and bind repair proteins outside the nucleus, impairing DNA repair and raising mutation rates. The pattern was observed up to eight-fold more frequently in children who later were diagnosed with cancer. Authors suggest that screening for these autoantibodies could enable earlier detection and possibly new therapeutic approaches, though further research is needed to confirm causality.
Why it matters
If validated, the autoantibody signature could allow earlier cancer detection in children and inform new prevention strategies.
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