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New Study Reveals High Mutation Risk Near Gene Start Sites

12/3/2025

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Summary

Story summary

Researchers found the first 100 base pairs after transcription start sites are 35% more prone to mutations than expected.
These mutations arise during early embryo cell divisions and can form mosaic mutations that may not affect parents but can be passed to children.
The study analyzed data from 150,000 genomes and found that mutations near gene start sites cluster in cancer- and brain-related genes, implying potential harm.

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Story summary

Researchers found the first 100 base pairs after transcription start sites are 35% more prone to mutations than expected.
These mutations arise during early embryo cell divisions and can form mosaic mutations that may not affect parents but can be passed to children.
The study analyzed data from 150,000 genomes and found that mutations near gene start sites cluster in cancer- and brain-related genes, implying potential harm.