What question did this study set out to answer?

This study aims to highlight the presence and impact of covert proximal frataxin gene deletions in Friedreich ataxia patients.

Compound Heterozygote Friedreich Ataxia Patients With Covert Proximal FXN Gene Deletions

View Full Paper

Ask AI

Bookmark

Authors

Case report reveals severe symptoms in Friedreich ataxia patients with covert gene deletions, indicating genetic testing improvements are needed.

This study aims to highlight the presence and impact of covert proximal frataxin gene deletions in Friedreich ataxia patients.
Data collected from patients enrolled in the FACOMS natural history study at the Children's Hospital of Philadelphia.
Clinical records of patients with proximal deletions diagnosed with one GAA expanded allele were analyzed.
Comparative analysis with patients having homozygous expansions and other pathogenic variants was conducted.
Patients with proximal deletions exhibited more severe disease symptoms compared to homozygous expansion patients.
Increased frequency of associated conditions such as cardiomyopathy (increased risk), diabetes, and optic neuropathy was observed.
Phenotypic similarities were noted between patients with covert deletions and those with distal deletions or null pathogenic variants.

Lazaropoulos et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark

View Full Paper

Ask AI

Bookmark

Authors

Case report reveals severe symptoms in Friedreich ataxia patients with covert gene deletions, indicating genetic testing improvements are needed.

This study aims to highlight the presence and impact of covert proximal frataxin gene deletions in Friedreich ataxia patients.
Data collected from patients enrolled in the FACOMS natural history study at the Children's Hospital of Philadelphia.
Clinical records of patients with proximal deletions diagnosed with one GAA expanded allele were analyzed.
Comparative analysis with patients having homozygous expansions and other pathogenic variants was conducted.
Patients with proximal deletions exhibited more severe disease symptoms compared to homozygous expansion patients.
Increased frequency of associated conditions such as cardiomyopathy (increased risk), diabetes, and optic neuropathy was observed.
Phenotypic similarities were noted between patients with covert deletions and those with distal deletions or null pathogenic variants.

Lazaropoulos et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark