Striking similarity of some of the genetic signals in mismatch repair genes (MSH3, FAN1 and PMS2) between GWAS of somatic expansion of CAG repeats in TCF4 gene (estimated from UKB WGS data) & GWAS of age at onset of cognitive changes in Huntington's.
https://www.biorxiv.org/content/10.1101/2024.11.25.625248v1
https://www.biorxiv.org/content/10.1101/2024.11.25.625248v1
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https://x.com/HujoelM/status/1861866994137722956