Researchradiation exposurechromosome aberrationskiramspublic health
North Korea Defectors Show Chromosome Mutations
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5.1
South Korean tests in 2024 by the Korea Institute of Radiological & Medical Sciences found chromosome mutations in defectors from areas near the Punggye-ri nuclear test site. Of 35 defectors tested this year, 12 (34%) showed chromosome aberrations; 44 of 174 defectors tested between 2023–25 (25%) showed similar findings. Officials say the mutations may be linked to radiation exposure but no radiation-related cancers have been diagnosed.
Scoring Rationale
Official KIRAMS data provide credible evidence, but findings are limited in scope and causal proof remains unestablished.
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