Publications by authors named "T Roscioli"
Article Synopsis
- This study identifies a new type of autosomal recessive intellectual disability linked to genetic variants in the GTF3C3 gene, which is essential for proper RNA polymerase III activity.
- Researchers employed various methods, including exome sequencing and Drosophila models, to analyze the effects of GTF3C3 variants found in twelve affected individuals from seven families.
- The results showed that the variants lead to significant functional losses in the gene, correlating with symptoms like intellectual disability, motor issues, seizures, and brain structure abnormalities.
Background: Genomic sequencing technology allows for identification of reproductive couples with an increased chance, as compared with that in the general population, of having a child with an autosomal recessive or X-linked genetic condition.
Methods: We investigated the feasibility, acceptability, and outcomes of a nationwide, couple-based genetic carrier screening program in Australia as part of the Mackenzie's Mission project. Health care providers offered screening to persons before pregnancy or early in pregnancy.
Purpose: To characterize the diagnostic and clinical outcomes of a cohort of critically ill infants and children with suspected mitochondrial disorders (MD) undergoing ultrarapid genomic testing as part of a national program.
Methods: Ultrarapid genomic sequencing was performed in 454 families (genome sequencing: n = 290, exome sequencing +/- mitochondrial DNA sequencing: n = 164). In 91 individuals, MD was considered, prompting analysis using an MD virtual gene panel.
Article Synopsis
- Sequence-based genetic testing finds causative variants in about 50% of cases of developmental and epileptic encephalopathies (DEEs), but DNA methylation changes in these cases have not been thoroughly explored.
- This study analyzed genome-wide DNA methylation in blood samples from 582 individuals with unresolved DEEs, identifying rare methylation patterns and potential genetic causes in 12 of these cases.
- The research highlights the effectiveness of DNA methylation analysis in diagnosing DEEs, showing a 2% diagnostic yield, and provides insights into the CHD2 gene's pathophysiology using advanced sequencing methods.
Article Synopsis
- * The study identifies RNU4-2, a non-coding RNA gene, as a significant contributor to syndromic NDD, revealing a specific 18-base pair region with low variation that includes variants found in 115 individuals with NDD.
- * RNU4-2 is highly expressed in the developing brain, and its variants disrupt splicing processes, indicating that non-coding genes play a crucial role in rare disorders, potentially aiding in the diagnosis of thousands with NDD worldwide.