Huntington disease: new insights into molecular pathogenesis and therapeutic opportunities

SJ Tabrizi, MD Flower, CA Ross, EJ Wild - Nature Reviews Neurology, 2020 - nature.com
Huntington disease (HD) is a neurodegenerative disease caused by CAG repeat expansion
in the huntingtin gene (HTT) and involves a complex web of pathogenic mechanisms …

A biological classification of Huntington's disease: the Integrated Staging System

SJ Tabrizi, S Schobel, EC Gantman… - The Lancet …, 2022 - thelancet.com
The current research paradigm for Huntington's disease is based on participants with overt
clinical phenotypes and does not address its pathophysiology nor the biomarker changes …

[HTML][HTML] On the wrong DNA track: Molecular mechanisms of repeat-mediated genome instability

AN Khristich, SM Mirkin - Journal of Biological Chemistry, 2020 - ASBMB
Expansions of simple tandem repeats are responsible for almost 50 human diseases, the
majority of which are severe, degenerative, and not currently treatable or preventable. In this …

[PDF][PDF] CAG repeat not polyglutamine length determines timing of Huntington's disease onset

JM Lee, K Correia, J Loupe, KH Kim, D Barker… - Cell, 2019 - cell.com
Variable, glutamine-encoding, CAA interruptions indicate that a property of the uninterrupted
HTT CAG repeat sequence, distinct from the length of huntingtin's polyglutamine segment …

ExpansionHunter: a sequence-graph-based tool to analyze variation in short tandem repeat regions

E Dolzhenko, V Deshpande, F Schlesinger… - …, 2019 - academic.oup.com
We describe a novel computational method for genotyping repeats using sequence graphs.
This method addresses the long-standing need to accurately genotype medically important …

[HTML][HTML] Exome sequencing of individuals with Huntington's disease implicates FAN1 nuclease activity in slowing CAG expansion and disease onset

B McAllister, J Donaldson, CS Binda, S Powell… - Nature …, 2022 - nature.com
The age at onset of motor symptoms in Huntington's disease (HD) is driven by HTT CAG
repeat length but modified by other genes. In this study, we used exome sequencing of 683 …

[HTML][HTML] A genetic association study of glutamine-encoding DNA sequence structures, somatic CAG expansion, and DNA repair gene variants, with Huntington …

M Ciosi, A Maxwell, SA Cumming, DJH Moss… - …, 2019 - thelancet.com
Background Huntington disease (HD) is caused by an unstable CAG/CAA repeat expansion
encoding a toxic polyglutamine tract. Here, we tested the hypotheses that HD outcomes are …

Advancing genomic technologies and clinical awareness accelerates discovery of disease-associated tandem repeat sequences

T Gall-Duncan, N Sato, RKC Yuen… - Genome …, 2022 - genome.cshlp.org
Expansions of gene-specific DNA tandem repeats (TRs), first described in 1991 as a
disease-causing mutation in humans, are now known to cause> 60 phenotypes, not just …

Polyglutamine diseases

EL Bunting, J Hamilton, SJ Tabrizi - Current Opinion in Neurobiology, 2022 - Elsevier
Polyglutamine diseases are a collection of nine CAG trinucleotide expansion disorders,
presenting with a spectrum of neurological and clinical phenotypes. Recent human, mouse …

Propensity for somatic expansion increases over the course of life in Huntington disease

R Kacher, FX Lejeune, S Noel, C Cazeneuve, A Brice… - Elife, 2021 - elifesciences.org
Recent work on Huntington disease (HD) suggests that somatic instability of CAG repeat
tracts, which can expand into the hundreds in neurons, explains clinical outcomes better …