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High levels of somatic DNA diversity at the myotonic dystrophy type 1 locus are driven by ultra-frequent expansion and contraction mutations
(Human Molecular Genetics, 2012, Vol. 21, No. 11 2450–2463, 2012-02-24)
Several human genetic diseases are associated with inheriting an abnormally large unstable DNA simple sequence
repeat. These sequences mutate, by changing the number of repeats, many times during the lifetime
of those ...
Myotonic dystrophy type 1 (DM1) clinical subtypes and CTCF site methylation status flanking the CTG expansion are mutant allele length-dependent
(2021)
Myotonic dystrophy type 1 (DM1) is a complex disease with a wide spectrum of symptoms. The exact relationship between
mutant CTG repeat expansion size and clinical outcome remains unclear. DM1 congenital patients (CDM) ...
Somatic instability of the expanded CTG triplet repeat in myotonic dystrophy type 1 is a heritable quantitative trait and modifier of disease severity
(Human Molecular Genetics, 2012 Vol. 21, No. 16. 3558–3567, 2012-05-30)
Deciphering the contribution of genetic instability in somatic cells is critical to our understanding of many
human disorders. Myotonic dystrophy type 1 (DM1) is one such disorder that is caused by the expansion
of a CTG ...
A polymorphism in the MSH3 mismatch repair gene is associated with the levels of somatic instability of the expanded CTG repeat in the blood DNA of myotonic dystrophy type 1 patients
(2016-04)
Somatic mosaicism of the expanded CTG repeat in myotonic dystrophy type 1 is age-dependent, tissuespecific and expansion-biased, contributing toward the tissue-specificity and progressive nature of the symptoms. Previously, ...
Disease-associated CAG·CTG triplet repeats expand rapidly in non-dividing mouse cells, but cell cycle arrest is insufficient to drive expansion
(Nucleic Acids Research 42(11) p. 7047–7056, 2014-05-01)
Genetically unstable expanded CAG·CTG trinucleotide repeats are causal in a number of human disorders, including Huntington disease and myotonic dystrophy type 1. It is still widely assumed that DNA polymerase slippage ...
Longitudinal increases in somatic mosaicism of the expanded CTG repeat in myotonic dystrophy type 1 are associated with variation in age-at-onset
(2020-06-30)
In myotonic dystrophy type 1 (DM1), somatic mosaicism of the (CTG)n repeat expansion is age-dependent, tissue-specific and expansion-biased. These features contribute toward variation in disease severity and confound ...
Parental age effects, but no evidence for an intrauterine effect in the transmission of myotonic dystrophy type 1
(European Journal of Human Genetics p.1-8, 2014-07-23)
Myotonic dystrophy type 1 (DM1) is caused by the expansion of an unstable CTG repeat (g.17294_17296(45_1000)) with more repeats associated with increased disease severity and reduced age at onset. Expanded disease-associated ...
MSH3 modifies somatic instability and disease severity in Huntington’s and myotonic dystrophy type 1
(2019-07)
Huntington’s disease and myotonic dystrophy type 1. A recent Huntington’s disease genome-wide association study found
rs557874766, an imputed single nucleotide polymorphism located within a polymorphic 9 bp tandem repeat ...